Add bugfixes from testing

# Conflicts:
#	build.sh
#	src/main/java/haus/nightmare/a3270/ui/TerminalView.kt

.gitea/workflows/build.yaml

@@ -41,6 +41,12 @@ jobs:
         run: |
           chmod +x ./gradlew ./build.sh
 
+      - name: Run Unit Tests
+        run: |
+          ./gradlew testDebugUnitTest --no-daemon
+        env:
+          J3270_DIR: ${{ github.workspace }}/j3270
+
       - name: Build Android APK
         run: |
           ./gradlew assembleDebug --no-daemon

.gitignore

@@ -9,3 +9,5 @@ captures/
 .cxx
 *.jar
 !gradle/wrapper/gradle-wrapper.jar
+*.txt
+*.log*

README.md

@@ -2,7 +2,7 @@
 
 [![Build & Test](https://git.hugfreevikings.wtf/rudi/a3270/actions/workflows/build.yaml/badge.svg)](https://git.hugfreevikings.wtf/rudi/a3270/actions)
 [![Android](https://img.shields.io/badge/Android-API%2024%2B%20%7C%20Compose-green.svg)](https://developer.android.com)
-[![License](https://img.shields.io/badge/License-MIT%20%2F%20BSD-green.svg)](LICENSE)
+[![License: Unlicense](https://img.shields.io/badge/License-Unlicense-blue.svg)](LICENSE)
 
 An **x3270-aligned IBM 3270 mainframe terminal emulator for Android**, written in Kotlin using **Jetpack Compose** and powered by the `lib3270j` protocol engine from [j3270](https://git.hugfreevikings.wtf/rudi/j3270). Designed for mobile access to IBM z/OS, z/VM, CMS, and TSO systems over TN3270 and TN3270E.
 
@@ -34,20 +34,70 @@ adb install -r a3270.apk
 
 ---
 
+## 📱 Compatibility & System Requirements
+
+- **Minimum Android Version**: Android 7.0 (Nougat) — **API Level 24** (`minSdk 24`)
+- **Target Android Version**: Android 14 — **API Level 34** (`targetSdk 34`)
+- **Compile SDK**: **API Level 34** (`compileSdk 34`)
+- **Architecture**: Universal — pure Kotlin/Java running on ART, fully compatible with all CPU ABIs (`arm64-v8a`, `armeabi-v7a`, `x86`, `x86_64`)
+- **Form Factors**: Adaptive UI scaling optimized for smartphones, foldables, tablets, and Chromebooks (Android runtime)
+- **Input Devices**: Full touch-screen support, native virtual keyboards, and external physical/Bluetooth keyboards
+
+---
+
 ## ✨ Features
 
-- **Modern Jetpack Compose UI**: Responsive, touch-optimized 3270 terminal screen rendering.
-- **TN3270 & TN3270E Protocol Support**: RFC 2355 compliant state machine, negotiation, Device-Type query, and SSL/TLS encryption via `lib3270j`.
-- **On-Screen Function Key Bar**: Quick-access touch bar for PF1–PF24, PA1–PA3, Enter, Clear, Reset, and Attn keys.
-- **IND$FILE File Transfer**: Full mobile UI for **CUT** and **DFT (DDM)** high-speed structured field file transfers with ASCII/binary translation, CRLF handling, and recfm/lrecl formatting for TSO, VM/CMS, and CICS.
-- **OIA Status Line**: Real-time Operator Information Area displaying connection state, keyboard lock, insert mode, cursor row/col, and LU name.
-- **Host Profile Storage**: Save and manage multiple mainframe connection profiles with custom ports, models, and SSL/TLS options.
-- **Background Session Persistence**: Android foreground service keeps your terminal session alive when multitasking.
-- **Terminal Models**:
-  - Model 2 (24x80)
-  - Model 3 (32x80)
-  - Model 4 (43x80)
-  - Model 5 (27x132)
+### 🖥️ Terminal Emulation & Protocol
+- **RFC 2355 TN3270 & TN3270E Engine**: Robust state machine, Option Negotiation, Device-Type Query, and LU name specification powered by `lib3270j`.
+- **Standard & Dynamic Terminal Models**:
+  - Model 2 (24 × 80)
+  - Model 3 (32 × 80)
+  - Model 4 (43 × 80)
+  - Model 5 (27 × 132)
+  - **Dynamic Screen Dimensions**: Configurable custom geometry (rows & columns up to 255 × 255).
+- **EBCDIC Code Pages**: Full character translation across international code pages (037, 1047, 500, etc.).
+
+### 📊 Graphics & Peripherals
+- **GDDM & GOCA Graphics**: Native rendering of Programmed Symbols (PS) and GOCA vector graphics directly in the Compose canvas.
+- **Light Pen Simulation**: Interactive touch support to simulate light pen selection and graphic cursor pick correlation.
+- **IBM 3287 Printer Emulation**: Integrated printer session support for spool/report capture (via associated display LU or dedicated printer LU) with direct printing through Android PrintManager (PDF export / system print).
+
+### 📁 IND$FILE File Transfer
+- Full mobile UI supporting both **CUT** and **DFT (DDM)** high-speed structured field transfers.
+- Compatible with **TSO**, **VM/CMS**, and **CICS** environments.
+- ASCII/binary translation, CRLF conversions, and configurable record format (`recfm`), record length (`lrecl`), and allocation units.
+
+### 🔍 Developer & Productivity Tools
+- **Field Inspector**: Live interactive inspector displaying start/end addresses, length, protection, numeric status, MDT (Modified Data Tag), display intensity, and extended highlighting/color, with one-tap "Jump to Field".
+- **Screen Search / Find**: On-screen text search with case sensitivity, forward/backward navigation, and visual match highlighting.
+- **Screen Exporter**: Export the current screen buffer to **Plain Text**, formatted **HTML**, or **PNG image**, with one-tap clipboard copy and Android system share sheet integration.
+- **Script & Macro Automation**: Built-in script runner supporting automated keystroke and wait sequences (e.g. `[enter]`, `[wait]`, `[tab]`) for login macros and repetitive tasks.
+
+### ✍️ Entry Assist & Typing Modes
+- **Document (DOC) Mode**: Configurable left/right margins, custom tab stops, and end-of-line bell warning.
+- **Word Wrap**: Automatic word wrapping across lines during input.
+- **APL Mode**: Support for APL extended character sets and symbols.
+- **Field Handling**: Automatic field skip (Auto-Skip), Numeric field lock, and Insert Mode auto-reset on AID transmission.
+
+### 🎨 Display, Themes & Ergonomics
+- **Jetpack Compose UI**: Smooth, hardware-accelerated 3270 terminal screen rendering with touch-to-position cursor.
+- **Color Themes**: Light and Dark application themes, 3270 extended color support, and 4-color legacy override mode.
+- **Cursor Customization**: Block and Underline cursor styles with toggleable blinking.
+- **Crosshair Ruler**: Toggleable horizontal and vertical ruler lines following the cursor for easy data tracking.
+- **Block Selection**: Rectangular text selection and copy mode.
+- **OIA Status Line**: Real-time Operator Information Area displaying connection status, keyboard lock, insert mode, cursor row/col, LU name, and inhibit reason codes.
+
+### 🔒 Security, Networking & Storage
+- **SSL / TLS Encryption**: Secure encrypted mainframe sessions with TLS certificate verification.
+- **Interactive Untrusted Certificate Prompt**: Inspect SSL certificates, view full certificate chain details, and accept/reject unverified connections.
+- **Proxy Support**: Connect via HTTP CONNECT, SOCKS4, SOCKS5, and Telnet proxies with optional user/password authentication.
+- **Background Session Persistence**: Android foreground service (`specialUse`) keeps your terminal TCP connection alive with status notifications when multitasking or screen is off.
+- **Host Profile Manager & INI Export**: Save multiple mainframe profiles, configure auto-connect on launch, and export/import configuration in INI format (interoperable with desktop `j3270`).
+
+### ⌨️ Input & Keyboards
+- **On-Screen Function Key Bar**: Two-row responsive touch bar providing PF1–PF24, PA1–PA3, Enter, Clear, Reset, Attn, SysReq, Erase EOF, Erase Input, Tab, BackTab, and D-pad cursor controls with haptic feedback.
+- **Termux-Style Native Input**: Low-latency native input connection with permanent number row and lock protection against soft-keyboard resets.
+- **Hardware Keyboard Support**: Complete physical keyboard integration with F1–F12 (mapped to PF1–PF12 / PF13–PF24 with Shift/Alt), Ctrl shortcuts, dead keys, and international character input.
 
 ---
 
@@ -56,6 +106,7 @@ adb install -r a3270.apk
 ### Prerequisites
 - **Java Development Kit (JDK)**: JDK 17 or JDK 21
 - **Android SDK**: API 34 platforms and build-tools (`ANDROID_HOME` or `ANDROID_SDK_ROOT` set)
+- **Minimum Target Device**: Android 7.0+ (API 24+)
 
 ### 1. Clone Repositories Side-by-Side
 For the easiest setup, clone both `j3270` and `a3270` into the same parent folder:
@@ -93,14 +144,6 @@ build/outputs/apk/debug/a3270-debug.apk
 
 ---
 
-## 🤝 Contributing
-
-Contributions are welcome! Please feel free to open a bug report or feature request via the Gitea issue tracker.
-
-I have contributed no code to this project, it was entirely written by LLMs with my guidance only.
-
----
-
 ## 📜 Acknowledgements
 
  - [j3270](https://git.hugfreevikings.wtf/rudi/j3270) — Desktop emulator and `lib3270j` protocol engine

build.gradle

@@ -4,15 +4,15 @@ plugins {
 }
 
 android {
-    namespace 'org.pubvm.a3270'
+    namespace 'haus.nightmare.a3270'
     compileSdk 34
 
     defaultConfig {
-        applicationId "org.pubvm.a3270"
+        applicationId "haus.nightmare.a3270"
         minSdk 24
         targetSdk 34
-        versionCode 4
-        versionName "0.1.3"
+        versionCode 6
+        versionName "1.0.1"
     }
 
     buildTypes {
@@ -69,4 +69,8 @@ dependencies {
     implementation 'androidx.compose.ui:ui-tooling-preview'
     implementation 'androidx.compose.material3:material3'
     implementation 'androidx.lifecycle:lifecycle-viewmodel-compose:2.7.0'
+
+    testImplementation 'junit:junit:4.13.2'
+    testImplementation 'org.json:json:20231013'
+    testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.7.3'
 }

build.sh

@@ -9,9 +9,11 @@ echo "=== Building a3270 (Android APK) ==="
 # Set up JAVA_HOME (prefer JDK 21 if available)
 if [ -d "/Users/rudi/.sdkman/candidates/java/21.0.6-sem" ]; then
     export JAVA_HOME="/Users/rudi/.sdkman/candidates/java/21.0.6-sem"
+elif [ -d "$HOME/.sdkman/candidates/java/21.0.2-open" ]; then
+    export JAVA_HOME="$HOME/.sdkman/candidates/java/21.0.2-open"
 elif [ -z "$JAVA_HOME" ]; then
-    if [ -d "/Users/rudi/.sdkman/candidates/java/current" ]; then
-        export JAVA_HOME="/Users/rudi/.sdkman/candidates/java/current"
+    if [ -d "$HOME/.sdkman/candidates/java/current" ]; then
+        export JAVA_HOME="$HOME/.sdkman/candidates/java/current"
     fi
 fi
 
@@ -19,6 +21,8 @@ fi
 if [ -z "$ANDROID_HOME" ]; then
     if [ -d "$HOME/Library/Android/sdk" ]; then
         export ANDROID_HOME="$HOME/Library/Android/sdk"
+    elif [ -d "$HOME/Android/Sdk" ]; then
+        export ANDROID_HOME="$HOME/Android/Sdk"
     fi
 fi
 
@@ -41,8 +45,12 @@ if [ ! -d "$J3270_PATH/lib3270j" ]; then
     exit 1
 fi
 
+if [ $# -gt 0 ]; then
+    echo "Running: ./gradlew $@"
+    ./gradlew "$@"
+else
     echo "Building debug APK..."
-./gradlew assembleDebug
+    ./gradlew assembleDebug --no-daemon
 
     APK_PATH="$SCRIPT_DIR/build/outputs/apk/debug/a3270-debug.apk"
     if [ -f "$APK_PATH" ]; then
@@ -52,3 +60,4 @@ if [ -f "$APK_PATH" ]; then
     else
         echo "Build completed, but APK not found at $APK_PATH"
     fi
+fi

gradle.properties

@@ -1,3 +1,4 @@
 android.useAndroidX=true
 org.gradle.jvmargs=-Xmx2048m -XX:+IgnoreUnrecognizedVMOptions -XX:MaxMetaspaceSize=512m
+kotlin.compiler.execution.strategy=in-process
 

gradlew

@@ -115,6 +115,26 @@ esac
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 
+# Prefer compatible JDK (JDK 17 or 21) if active Java is incompatible (Java 22+)
+if [ -d "/Users/rudi/.sdkman/candidates/java/21.0.6-sem" ]; then
+    export JAVA_HOME="/Users/rudi/.sdkman/candidates/java/21.0.6-sem"
+elif [ -d "$HOME/.sdkman/candidates/java/21.0.2-open" ]; then
+    CURRENT_JAVA_CMD="${JAVA_HOME:+$JAVA_HOME/bin/java}"
+    CURRENT_JAVA_CMD="${CURRENT_JAVA_CMD:-java}"
+    CURRENT_VER=$("$CURRENT_JAVA_CMD" -version 2>&1 | awk -F '"' '/version/ {print $2}' | cut -d'.' -f1)
+    if [ -z "$JAVA_HOME" ] || [ "$CURRENT_VER" -gt 21 ] 2>/dev/null; then
+        export JAVA_HOME="$HOME/.sdkman/candidates/java/21.0.2-open"
+    fi
+fi
+
+if [ -z "$ANDROID_HOME" ]; then
+    if [ -d "$HOME/Library/Android/sdk" ]; then
+        export ANDROID_HOME="$HOME/Library/Android/sdk"
+    elif [ -d "$HOME/Android/Sdk" ]; then
+        export ANDROID_HOME="$HOME/Android/Sdk"
+    fi
+fi
+
 # Determine the Java command to use to start the JVM.
 if [ -n "$JAVA_HOME" ] ; then
     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then

src/main/java/haus/nightmare/a3270/ft/FileTransfer.kt

@@ -1,12 +1,12 @@
-package org.pubvm.a3270.ft
+package haus.nightmare.a3270.ft
 
 import android.os.Handler
 import android.os.Looper
-import org.lib3270j.Telnet3270Client
-import org.lib3270j.ft.FTConfig
-import org.lib3270j.ft.FTConstants.FTState
-import org.lib3270j.ft.FTCut
-import org.lib3270j.ft.FTDft
+import haus.nightmare.lib3270j.Telnet3270Client
+import haus.nightmare.lib3270j.ft.FTConfig
+import haus.nightmare.lib3270j.ft.FTConstants.FTState
+import haus.nightmare.lib3270j.ft.FTCut
+import haus.nightmare.lib3270j.ft.FTDft
 import java.io.File
 import java.io.IOException
 import java.util.Timer

src/main/java/haus/nightmare/a3270/graphics/AndroidCanvasRenderer.kt

@@ -0,0 +1,49 @@
+package haus.nightmare.a3270.graphics
+
+import android.graphics.Bitmap
+import android.graphics.Canvas
+import android.graphics.Paint
+import android.graphics.RectF
+import haus.nightmare.lib3270j.graphics.PixelBuffer
+
+/**
+ * Android bridge for translating lib3270j PixelBuffer into Android Bitmaps and rendering onto Canvas.
+ */
+object AndroidCanvasRenderer {
+
+    /**
+     * Converts a PixelBuffer into an Android Bitmap using ARGB_8888 configuration.
+     */
+    fun toBitmap(buffer: PixelBuffer?): Bitmap? {
+        if (buffer == null) return null
+        val w = buffer.width
+        val h = buffer.height
+        if (w <= 0 || h <= 0) return null
+        val pixels = buffer.pixels ?: return null
+        return Bitmap.createBitmap(pixels, w, h, Bitmap.Config.ARGB_8888)
+    }
+
+    /**
+     * Draws the given PixelBuffer onto an Android Canvas scaled to the destination rectangle.
+     */
+    fun drawPixelBuffer(
+        canvas: Canvas,
+        buffer: PixelBuffer?,
+        dstRect: RectF,
+        paint: Paint? = null
+    ) {
+        val bmp = toBitmap(buffer) ?: return
+        canvas.drawBitmap(bmp, null, dstRect, paint)
+    }
+
+    /**
+     * Copies the PixelBuffer contents into an existing mutable Bitmap.
+     */
+    fun copyIntoBitmap(buffer: PixelBuffer, target: Bitmap) {
+        val pixels = buffer.pixels ?: return
+        val w = minOf(buffer.width, target.width)
+        val h = minOf(buffer.height, target.height)
+        if (w <= 0 || h <= 0) return
+        target.setPixels(pixels, 0, buffer.width, 0, 0, w, h)
+    }
+}

src/main/java/haus/nightmare/a3270/service/TerminalService.kt

@@ -1,4 +1,4 @@
-package org.pubvm.a3270.service
+package haus.nightmare.a3270.service
 
 import android.app.Notification
 import android.app.NotificationChannel
@@ -10,8 +10,8 @@ import android.content.Intent
 import android.os.Build
 import android.os.IBinder
 import androidx.core.app.NotificationCompat
-import org.pubvm.a3270.MainActivity
-import org.pubvm.a3270.R
+import haus.nightmare.a3270.MainActivity
+import haus.nightmare.a3270.R
 
 class TerminalService : Service() {
 

src/main/java/haus/nightmare/a3270/storage/AppSettings.kt

@@ -0,0 +1,400 @@
+package haus.nightmare.a3270.storage
+
+import android.content.Context
+import android.content.SharedPreferences
+import java.io.BufferedReader
+import java.io.PrintWriter
+import java.io.Reader
+import java.io.Writer
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
+
+object AppSettings {
+    private const val PREFS_NAME = "a3270_settings"
+    private const val KEY_MASK_HIDDEN_INPUT = "mask_hidden_input"
+    private const val KEY_CURSOR_BLINK = "cursor_blink"
+    private const val KEY_HAPTIC_FEEDBACK = "haptic_feedback"
+
+    private const val KEY_VERIFY_CERTS = "verify_certs"
+    private const val KEY_DEFAULT_GRAPHICS_MODE = "default_graphics_mode"
+    private const val KEY_DEFAULT_CODE_PAGE = "default_code_page"
+
+    // New settings aligned with j3270
+    private const val KEY_UI_THEME = "ui_theme"
+    private const val KEY_CROSSHAIR_RULER = "crosshair_ruler"
+    private const val KEY_CURSOR_STYLE = "cursor_style"
+    private const val KEY_BLOCK_SELECT_MODE = "block_select_mode"
+    private const val KEY_STARTUP_BEHAVIOR = "startup_behavior"
+    private const val KEY_DYNAMIC_ROWS = "dynamic_rows"
+    private const val KEY_DYNAMIC_COLS = "dynamic_cols"
+
+    // Entry Assist & Modes aligned with j3270
+    private const val KEY_ENTRY_ASSIST_DOC_MODE = "entry_assist_doc_mode"
+    private const val KEY_ENTRY_ASSIST_WORD_WRAP = "entry_assist_word_wrap"
+    private const val KEY_ENTRY_ASSIST_START_COL = "entry_assist_start_col"
+    private const val KEY_ENTRY_ASSIST_END_COL = "entry_assist_end_col"
+    private const val KEY_ENTRY_ASSIST_BELL = "entry_assist_bell"
+    private const val KEY_ENTRY_ASSIST_BELL_COL = "entry_assist_bell_col"
+    private const val KEY_ENTRY_ASSIST_TAB_STOPS = "entry_assist_tab_stops"
+    private const val KEY_INSERT_OFF_ON_AID = "insert_off_on_aid"
+    private const val KEY_FOUR_COLOR_OVERRIDE = "four_color_override"
+    private const val KEY_NUMERIC_FIELD_LOCK = "numeric_field_lock"
+    private const val KEY_AUTO_SKIP_ENABLED = "auto_skip_enabled"
+
+    enum class StartupBehavior {
+        SHOW_CONNECT,
+        DO_NOTHING,
+        AUTO_CONNECT
+    }
+
+    private fun getPrefs(context: Context): SharedPreferences {
+        return context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
+    }
+
+    fun isMaskHiddenInputEnabled(context: Context): Boolean {
+        return getPrefs(context).getBoolean(KEY_MASK_HIDDEN_INPUT, true)
+    }
+
+    fun setMaskHiddenInputEnabled(context: Context, enabled: Boolean) {
+        getPrefs(context).edit().putBoolean(KEY_MASK_HIDDEN_INPUT, enabled).apply()
+    }
+
+    fun isCursorBlinkEnabled(context: Context): Boolean {
+        return getPrefs(context).getBoolean(KEY_CURSOR_BLINK, true)
+    }
+
+    fun setCursorBlinkEnabled(context: Context, enabled: Boolean) {
+        getPrefs(context).edit().putBoolean(KEY_CURSOR_BLINK, enabled).apply()
+    }
+
+    fun isHapticFeedbackEnabled(context: Context): Boolean {
+        return getPrefs(context).getBoolean(KEY_HAPTIC_FEEDBACK, true)
+    }
+
+    fun setHapticFeedbackEnabled(context: Context, enabled: Boolean) {
+        getPrefs(context).edit().putBoolean(KEY_HAPTIC_FEEDBACK, enabled).apply()
+    }
+
+    fun isVerifyCertsEnabled(context: Context): Boolean {
+        return getPrefs(context).getBoolean(KEY_VERIFY_CERTS, true)
+    }
+
+    fun setVerifyCertsEnabled(context: Context, enabled: Boolean) {
+        getPrefs(context).edit().putBoolean(KEY_VERIFY_CERTS, enabled).apply()
+    }
+
+    fun getDefaultGraphicsMode(context: Context): String {
+        return getPrefs(context).getString(KEY_DEFAULT_GRAPHICS_MODE, "BOTH") ?: "BOTH"
+    }
+
+    fun setDefaultGraphicsMode(context: Context, mode: String) {
+        getPrefs(context).edit().putString(KEY_DEFAULT_GRAPHICS_MODE, mode).apply()
+    }
+
+    fun getDefaultCodePage(context: Context): String {
+        return getPrefs(context).getString(KEY_DEFAULT_CODE_PAGE, "037") ?: "037"
+    }
+
+    fun setDefaultCodePage(context: Context, codePage: String) {
+        getPrefs(context).edit().putString(KEY_DEFAULT_CODE_PAGE, codePage).apply()
+    }
+
+    // ========== UI Theme ==========
+    fun getUiTheme(context: Context): String {
+        return getPrefs(context).getString(KEY_UI_THEME, "DARK") ?: "DARK"
+    }
+
+    fun setUiTheme(context: Context, theme: String) {
+        getPrefs(context).edit().putString(KEY_UI_THEME, if (theme.equals("LIGHT", ignoreCase = true)) "LIGHT" else "DARK").apply()
+    }
+
+    // ========== Crosshair Ruler ==========
+    fun isCrosshairRulerEnabled(context: Context): Boolean {
+        return getPrefs(context).getBoolean(KEY_CROSSHAIR_RULER, false)
+    }
+
+    fun setCrosshairRulerEnabled(context: Context, enabled: Boolean) {
+        getPrefs(context).edit().putBoolean(KEY_CROSSHAIR_RULER, enabled).apply()
+    }
+
+    // ========== Cursor Style ==========
+    fun getCursorStyle(context: Context): String {
+        return getPrefs(context).getString(KEY_CURSOR_STYLE, "BLOCK") ?: "BLOCK"
+    }
+
+    fun setCursorStyle(context: Context, style: String) {
+        val s = if (style.equals("UNDERLINE", ignoreCase = true)) "UNDERLINE" else "BLOCK"
+        getPrefs(context).edit().putString(KEY_CURSOR_STYLE, s).apply()
+    }
+
+    // ========== Block Select Mode ==========
+    fun isBlockSelectModeEnabled(context: Context): Boolean {
+        return getPrefs(context).getBoolean(KEY_BLOCK_SELECT_MODE, false)
+    }
+
+    fun setBlockSelectModeEnabled(context: Context, enabled: Boolean) {
+        getPrefs(context).edit().putBoolean(KEY_BLOCK_SELECT_MODE, enabled).apply()
+    }
+
+    // ========== Startup Behavior ==========
+    fun getStartupBehavior(context: Context): StartupBehavior {
+        val s = getPrefs(context).getString(KEY_STARTUP_BEHAVIOR, StartupBehavior.SHOW_CONNECT.name)
+        return try {
+            StartupBehavior.valueOf(s ?: StartupBehavior.SHOW_CONNECT.name)
+        } catch (_: IllegalArgumentException) {
+            StartupBehavior.SHOW_CONNECT
+        }
+    }
+
+    fun setStartupBehavior(context: Context, behavior: StartupBehavior) {
+        getPrefs(context).edit().putString(KEY_STARTUP_BEHAVIOR, behavior.name).apply()
+    }
+
+    // ========== Dynamic Screen Dimensions ==========
+    fun getDynamicRows(context: Context): Int {
+        return getPrefs(context).getInt(KEY_DYNAMIC_ROWS, 62).coerceIn(24, 255)
+    }
+
+    fun setDynamicRows(context: Context, rows: Int) {
+        getPrefs(context).edit().putInt(KEY_DYNAMIC_ROWS, rows.coerceIn(24, 255)).apply()
+    }
+
+    fun getDynamicCols(context: Context): Int {
+        return getPrefs(context).getInt(KEY_DYNAMIC_COLS, 160).coerceIn(80, 255)
+    }
+
+    fun setDynamicCols(context: Context, cols: Int) {
+        getPrefs(context).edit().putInt(KEY_DYNAMIC_COLS, cols.coerceIn(80, 255)).apply()
+    }
+
+    // ========== Entry Assist (Document Mode) ==========
+    fun getEntryAssistDocMode(context: Context): Boolean {
+        return getPrefs(context).getBoolean(KEY_ENTRY_ASSIST_DOC_MODE, false)
+    }
+
+    fun setEntryAssistDocMode(context: Context, enabled: Boolean) {
+        getPrefs(context).edit().putBoolean(KEY_ENTRY_ASSIST_DOC_MODE, enabled).apply()
+    }
+
+    fun getEntryAssistWordWrap(context: Context): Boolean {
+        return getPrefs(context).getBoolean(KEY_ENTRY_ASSIST_WORD_WRAP, false)
+    }
+
+    fun setEntryAssistWordWrap(context: Context, enabled: Boolean) {
+        getPrefs(context).edit().putBoolean(KEY_ENTRY_ASSIST_WORD_WRAP, enabled).apply()
+    }
+
+    fun getEntryAssistStartCol(context: Context): Int {
+        return getPrefs(context).getInt(KEY_ENTRY_ASSIST_START_COL, 1).coerceIn(1, 80)
+    }
+
+    fun setEntryAssistStartCol(context: Context, col: Int) {
+        getPrefs(context).edit().putInt(KEY_ENTRY_ASSIST_START_COL, col.coerceIn(1, 80)).apply()
+    }
+
+    fun getEntryAssistEndCol(context: Context): Int {
+        return getPrefs(context).getInt(KEY_ENTRY_ASSIST_END_COL, 80).coerceIn(1, 80)
+    }
+
+    fun setEntryAssistEndCol(context: Context, col: Int) {
+        getPrefs(context).edit().putInt(KEY_ENTRY_ASSIST_END_COL, col.coerceIn(1, 80)).apply()
+    }
+
+    fun getEntryAssistBell(context: Context): Boolean {
+        return getPrefs(context).getBoolean(KEY_ENTRY_ASSIST_BELL, false)
+    }
+
+    fun setEntryAssistBell(context: Context, enabled: Boolean) {
+        getPrefs(context).edit().putBoolean(KEY_ENTRY_ASSIST_BELL, enabled).apply()
+    }
+
+    fun getEntryAssistBellCol(context: Context): Int {
+        return getPrefs(context).getInt(KEY_ENTRY_ASSIST_BELL_COL, 75).coerceIn(1, 80)
+    }
+
+    fun setEntryAssistBellCol(context: Context, col: Int) {
+        getPrefs(context).edit().putInt(KEY_ENTRY_ASSIST_BELL_COL, col.coerceIn(1, 80)).apply()
+    }
+
+    fun getEntryAssistTabStops(context: Context): String {
+        return getPrefs(context).getString(KEY_ENTRY_ASSIST_TAB_STOPS, "5,10,15,20,25,30,35,40,45,50,55,60,65,70,75")
+            ?: "5,10,15,20,25,30,35,40,45,50,55,60,65,70,75"
+    }
+
+    fun setEntryAssistTabStops(context: Context, stops: String) {
+        getPrefs(context).edit().putString(KEY_ENTRY_ASSIST_TAB_STOPS, stops).apply()
+    }
+
+    fun getEntryAssistTabStopsArray(context: Context): IntArray {
+        val s = getEntryAssistTabStops(context)
+        if (s.isBlank()) return intArrayOf()
+        val parts = s.split(",")
+        val list = mutableListOf<Int>()
+        for (p in parts) {
+            val v = p.trim().toIntOrNull()
+            if (v != null && v > 0) {
+                list.add(v - 1)
+            }
+        }
+        return list.toIntArray()
+    }
+
+    // ========== Terminal Operational Modes ==========
+    fun getInsertOffOnAid(context: Context): Boolean {
+        return getPrefs(context).getBoolean(KEY_INSERT_OFF_ON_AID, true)
+    }
+
+    fun setInsertOffOnAid(context: Context, enabled: Boolean) {
+        getPrefs(context).edit().putBoolean(KEY_INSERT_OFF_ON_AID, enabled).apply()
+    }
+
+    fun getFourColorOverride(context: Context): Boolean {
+        return getPrefs(context).getBoolean(KEY_FOUR_COLOR_OVERRIDE, false)
+    }
+
+    fun setFourColorOverride(context: Context, enabled: Boolean) {
+        getPrefs(context).edit().putBoolean(KEY_FOUR_COLOR_OVERRIDE, enabled).apply()
+    }
+
+    fun getNumericFieldLock(context: Context): Boolean {
+        return getPrefs(context).getBoolean(KEY_NUMERIC_FIELD_LOCK, true)
+    }
+
+    fun setNumericFieldLock(context: Context, enabled: Boolean) {
+        getPrefs(context).edit().putBoolean(KEY_NUMERIC_FIELD_LOCK, enabled).apply()
+    }
+
+    fun getAutoSkipEnabled(context: Context): Boolean {
+        return getPrefs(context).getBoolean(KEY_AUTO_SKIP_ENABLED, true)
+    }
+
+    fun setAutoSkipEnabled(context: Context, enabled: Boolean) {
+        getPrefs(context).edit().putBoolean(KEY_AUTO_SKIP_ENABLED, enabled).apply()
+    }
+
+    // ========== INI Config Export / Import ==========
+
+    fun exportToIni(context: Context, writer: Writer) {
+        val p = PrintWriter(writer)
+        val timeStamp = SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.US).format(Date())
+        p.println("; a3270 / j3270 Configuration File")
+        p.println("; Exported on $timeStamp")
+        p.println()
+
+        p.println("[appearance]")
+        p.println("javaUiTheme = ${getUiTheme(context)}")
+        p.println("crosshairRuler = ${isCrosshairRulerEnabled(context)}")
+        p.println("cursorStyle = ${getCursorStyle(context)}")
+        p.println()
+
+        p.println("[behavior]")
+        p.println("startupBehavior = ${getStartupBehavior(context).name}")
+        val autoHost = HostStorage.getAutoConnectHost(context)
+        if (autoHost != null) {
+            p.println("autoConnectHost = ${autoHost.host}")
+            p.println("autoConnectPort = ${autoHost.port}")
+            p.println("autoConnectTls = ${autoHost.useTls}")
+            p.println("autoConnectVerifyCert = ${autoHost.tlsVerifyCert}")
+            p.println("autoConnectTn3270e = ${autoHost.tn3270e}")
+        }
+        p.println("codePage = ${getDefaultCodePage(context)}")
+        p.println("dynamicRows = ${getDynamicRows(context)}")
+        p.println("dynamicCols = ${getDynamicCols(context)}")
+        p.println("blockSelectMode = ${isBlockSelectModeEnabled(context)}")
+        p.println()
+
+        p.println("[entryassist]")
+        p.println("docMode = ${getEntryAssistDocMode(context)}")
+        p.println("wordWrap = ${getEntryAssistWordWrap(context)}")
+        p.println("startCol = ${getEntryAssistStartCol(context)}")
+        p.println("endCol = ${getEntryAssistEndCol(context)}")
+        p.println("bell = ${getEntryAssistBell(context)}")
+        p.println("bellCol = ${getEntryAssistBellCol(context)}")
+        p.println("tabStops = ${getEntryAssistTabStops(context)}")
+        p.println()
+
+        p.println("[modes]")
+        p.println("insertOffOnAid = ${getInsertOffOnAid(context)}")
+        p.println("fourColorOverride = ${getFourColorOverride(context)}")
+        p.println("numericFieldLock = ${getNumericFieldLock(context)}")
+        p.println("autoSkip = ${getAutoSkipEnabled(context)}")
+        p.println()
+
+        p.println("[graphics]")
+        p.println("graphicsMode = ${getDefaultGraphicsMode(context)}")
+        p.println()
+
+        p.flush()
+    }
+
+    fun loadFromIni(context: Context, reader: Reader) {
+        val bufferedReader = BufferedReader(reader)
+        var currentSection = ""
+
+        bufferedReader.forEachLine { rawLine ->
+            val line = rawLine.trim()
+            if (line.isNotEmpty() && !line.startsWith(";") && !line.startsWith("#")) {
+                if (line.startsWith("[") && line.endsWith("]")) {
+                    currentSection = line.substring(1, line.length - 1).lowercase(Locale.US).trim()
+                } else {
+                    val eq = line.indexOf('=')
+                    if (eq >= 0) {
+                        val key = line.substring(0, eq).trim()
+                        val value = line.substring(eq + 1).trim()
+                        applyConfigEntry(context, currentSection, key, value)
+                    }
+                }
+            }
+        }
+    }
+
+    private fun applyConfigEntry(context: Context, section: String, key: String, value: String) {
+        when (section) {
+            "appearance" -> {
+                when (key.lowercase(Locale.US)) {
+                    "javauitheme", "theme", "uitheme" -> setUiTheme(context, value)
+                    "crosshairruler", "ruler" -> setCrosshairRulerEnabled(context, value.toBoolean())
+                    "cursorstyle" -> setCursorStyle(context, value)
+                }
+            }
+            "behavior", "connection" -> {
+                when (key.lowercase(Locale.US)) {
+                    "startupbehavior" -> {
+                        try {
+                            setStartupBehavior(context, StartupBehavior.valueOf(value.uppercase(Locale.US)))
+                        } catch (_: Exception) {}
+                    }
+                    "codepage", "charset" -> setDefaultCodePage(context, value)
+                    "dynamicrows", "dynamic_rows" -> value.toIntOrNull()?.let { setDynamicRows(context, it) }
+                    "dynamiccols", "dynamic_cols" -> value.toIntOrNull()?.let { setDynamicCols(context, it) }
+                    "blockselectmode" -> setBlockSelectModeEnabled(context, value.toBoolean())
+                }
+            }
+            "entryassist" -> {
+                when (key.lowercase(Locale.US)) {
+                    "docmode", "entryassistdocmode" -> setEntryAssistDocMode(context, value.toBoolean())
+                    "wordwrap", "entryassistwordwrap" -> setEntryAssistWordWrap(context, value.toBoolean())
+                    "startcol", "entryassiststartcol" -> value.toIntOrNull()?.let { setEntryAssistStartCol(context, it) }
+                    "endcol", "entryassistendcol" -> value.toIntOrNull()?.let { setEntryAssistEndCol(context, it) }
+                    "bell", "entryassistbell" -> setEntryAssistBell(context, value.toBoolean())
+                    "bellcol", "entryassistbellcol" -> value.toIntOrNull()?.let { setEntryAssistBellCol(context, it) }
+                    "tabstops", "entryassisttabstops" -> setEntryAssistTabStops(context, value)
+                }
+            }
+            "modes" -> {
+                when (key.lowercase(Locale.US)) {
+                    "insertoffonaid" -> setInsertOffOnAid(context, value.toBoolean())
+                    "fourcoloroverride" -> setFourColorOverride(context, value.toBoolean())
+                    "numericfieldlock" -> setNumericFieldLock(context, value.toBoolean())
+                    "autoskip", "autoskipenabled" -> setAutoSkipEnabled(context, value.toBoolean())
+                }
+            }
+            "graphics" -> {
+                if (key.equals("graphicsmode", ignoreCase = true) || key.equals("mode", ignoreCase = true)) {
+                    setDefaultGraphicsMode(context, value.uppercase(Locale.US))
+                }
+            }
+        }
+    }
+}

src/main/java/haus/nightmare/a3270/storage/HostStorage.kt

@@ -1,4 +1,4 @@
-package org.pubvm.a3270.storage
+package haus.nightmare.a3270.storage
 
 import android.content.Context
 import android.content.SharedPreferences
@@ -12,12 +12,21 @@ data class SavedHost(
     val host: String,
     val port: Int = 23,
     val model: Int = 2,
+    val dynamicRows: Int = 62,
+    val dynamicCols: Int = 160,
     val luName: String = "",
     val autoConnect: Boolean = false,
     val hostType: String = "TSO",
     val useTls: Boolean = false,
     val tlsVerifyCert: Boolean = true,
-    val graphicsMode: String = "BOTH"
+    val tn3270e: Boolean = true,
+    val graphicsMode: String = "BOTH",
+    val codePage: String = "037",
+    val proxyType: String = "NONE",
+    val proxyHost: String = "",
+    val proxyPort: Int = 0,
+    val proxyUsername: String = "",
+    val proxyPassword: String = ""
 ) {
     fun toJson(): JSONObject {
         return JSONObject().apply {
@@ -26,12 +35,21 @@ data class SavedHost(
             put("host", host)
             put("port", port)
             put("model", model)
+            put("dynamicRows", dynamicRows)
+            put("dynamicCols", dynamicCols)
             put("luName", luName)
             put("autoConnect", autoConnect)
             put("hostType", hostType)
             put("useTls", useTls)
             put("tlsVerifyCert", tlsVerifyCert)
+            put("tn3270e", tn3270e)
             put("graphicsMode", graphicsMode)
+            put("codePage", codePage)
+            put("proxyType", proxyType)
+            put("proxyHost", proxyHost)
+            put("proxyPort", proxyPort)
+            put("proxyUsername", proxyUsername)
+            put("proxyPassword", proxyPassword)
         }
     }
 
@@ -43,12 +61,21 @@ data class SavedHost(
                 host = json.optString("host", "127.0.0.1"),
                 port = json.optInt("port", 23),
                 model = json.optInt("model", 2),
+                dynamicRows = json.optInt("dynamicRows", 62),
+                dynamicCols = json.optInt("dynamicCols", 160),
                 luName = json.optString("luName", ""),
                 autoConnect = json.optBoolean("autoConnect", false),
                 hostType = json.optString("hostType", "TSO"),
                 useTls = json.optBoolean("useTls", false),
                 tlsVerifyCert = json.optBoolean("tlsVerifyCert", true),
-                graphicsMode = json.optString("graphicsMode", "BOTH")
+                tn3270e = json.optBoolean("tn3270e", true),
+                graphicsMode = json.optString("graphicsMode", "BOTH"),
+                codePage = json.optString("codePage", "037"),
+                proxyType = json.optString("proxyType", "NONE"),
+                proxyHost = json.optString("proxyHost", ""),
+                proxyPort = json.optInt("proxyPort", 0),
+                proxyUsername = json.optString("proxyUsername", ""),
+                proxyPassword = json.optString("proxyPassword", "")
             )
         }
     }
@@ -111,6 +138,51 @@ object HostStorage {
         saveAll(context, currentHosts)
     }
 
+    val AVAILABLE_CODE_PAGES = listOf(
+        "037" to "037 - US / Canada / Brazil",
+        "1047" to "1047 - IBM Open Systems / z/OS Unix",
+        "500" to "500 - International Latin-1",
+        "273" to "273 - Germany / Austria",
+        "277" to "277 - Denmark / Norway",
+        "278" to "278 - Sweden / Finland",
+        "280" to "280 - Italy",
+        "284" to "284 - Spain / Latin America",
+        "285" to "285 - United Kingdom",
+        "297" to "297 - France",
+        "420" to "420 - Arabic Bilingual",
+        "424" to "424 - Hebrew (with Latin)",
+        "803" to "803 - Hebrew Character Set",
+        "838" to "838 - Thai Extended",
+        "1160" to "1160 - Thai Euro",
+        "870" to "870 - Eastern Europe / Latin-2",
+        "871" to "871 - Iceland",
+        "875" to "875 - Greece (Greek)",
+        "880" to "880 - Cyrillic (Russian)",
+        "1025" to "1025 - Cyrillic Multilingual",
+        "1123" to "1123 - Cyrillic Ukraine",
+        "1154" to "1154 - Cyrillic Euro",
+        "905" to "905 - Turkey (Latin-5)",
+        "1026" to "1026 - Turkey (Turkish)",
+        "1155" to "1155 - Turkey Euro",
+        "1140" to "1140 - US / Canada (Euro €)",
+        "1141" to "1141 - Germany / Austria (Euro €)",
+        "1142" to "1142 - Denmark / Norway (Euro €)",
+        "1143" to "1143 - Sweden / Finland (Euro €)",
+        "1144" to "1144 - Italy (Euro €)",
+        "1145" to "1145 - Spain / Latin America (Euro €)",
+        "1146" to "1146 - United Kingdom (Euro €)",
+        "1147" to "1147 - France (Euro €)",
+        "1148" to "1148 - International (Euro €)",
+        "1149" to "1149 - Iceland (Euro €)",
+        "930" to "930 - Japanese Katakana Mixed DBCS",
+        "939" to "939 - Japanese Latin Mixed DBCS",
+        "935" to "935 - Simplified Chinese Mixed DBCS",
+        "937" to "937 - Traditional Chinese Mixed DBCS",
+        "1388" to "1388 - Simplified Chinese Extended DBCS",
+        "1371" to "1371 - Traditional Chinese Extended DBCS",
+        "933" to "933 - Korean Mixed DBCS"
+    )
+
     fun getAutoConnectHost(context: Context): SavedHost? {
         return getSavedHosts(context).firstOrNull { it.autoConnect }
     }

src/main/java/haus/nightmare/a3270/ui/ConnectDialog.kt

@@ -0,0 +1,819 @@
+package haus.nightmare.a3270.ui
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.border
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.focus.FocusRequester
+import androidx.compose.ui.focus.focusRequester
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalSoftwareKeyboardController
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.ImeAction
+import androidx.compose.ui.text.input.KeyboardCapitalization
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.compose.ui.window.Dialog
+import androidx.compose.ui.window.DialogProperties
+import haus.nightmare.a3270.storage.HostStorage
+import haus.nightmare.a3270.storage.SavedHost
+
+private val TerminalKeyboardOptions = KeyboardOptions(
+    capitalization = KeyboardCapitalization.None,
+    autoCorrect = false,
+    keyboardType = KeyboardType.Ascii
+)
+
+@Composable
+fun ConnectDialog(
+    onDismiss: () -> Unit,
+    onConnect: (
+        host: String,
+        port: Int,
+        model: Int,
+        dynamicRows: Int,
+        dynamicCols: Int,
+        luName: String,
+        hostType: String,
+        useTls: Boolean,
+        tlsVerifyCert: Boolean,
+        tn3270e: Boolean,
+        graphicsMode: String,
+        codePage: String,
+        proxyType: String,
+        proxyHost: String,
+        proxyPort: Int,
+        proxyUser: String,
+        proxyPass: String
+    ) -> Unit
+) {
+    val context = LocalContext.current
+    var savedHosts by remember { mutableStateOf(HostStorage.getSavedHosts(context)) }
+    var selectedHostId by remember { mutableStateOf<String?>(null) }
+
+    var profileName by remember { mutableStateOf("") }
+    var host by remember { mutableStateOf("") }
+    var portStr by remember { mutableStateOf("") }
+    var modelNum by remember { mutableIntStateOf(2) }
+    var dynamicRowsStr by remember { mutableStateOf(haus.nightmare.a3270.storage.AppSettings.getDynamicRows(context).toString()) }
+    var dynamicColsStr by remember { mutableStateOf(haus.nightmare.a3270.storage.AppSettings.getDynamicCols(context).toString()) }
+    var luName by remember { mutableStateOf("") }
+    var autoConnect by remember { mutableStateOf(false) }
+    var hostType by remember { mutableStateOf("TSO") }
+    var useTls by remember { mutableStateOf(false) }
+    var tlsVerifyCert by remember { mutableStateOf(true) }
+    var tn3270e by remember { mutableStateOf(true) }
+    var graphicsMode by remember { mutableStateOf("BOTH") }
+    var codePage by remember { mutableStateOf(haus.nightmare.a3270.storage.AppSettings.getDefaultCodePage(context)) }
+    var proxyType by remember { mutableStateOf("NONE") }
+    var proxyHost by remember { mutableStateOf("") }
+    var proxyPortStr by remember { mutableStateOf("") }
+    var proxyUsername by remember { mutableStateOf("") }
+    var proxyPassword by remember { mutableStateOf("") }
+    var showProxySettings by remember { mutableStateOf(false) }
+
+    fun loadProfile(saved: SavedHost) {
+        selectedHostId = saved.id
+        profileName = saved.name
+        host = saved.host
+        portStr = saved.port.toString()
+        modelNum = saved.model
+        dynamicRowsStr = saved.dynamicRows.toString()
+        dynamicColsStr = saved.dynamicCols.toString()
+        luName = saved.luName
+        autoConnect = saved.autoConnect
+        hostType = saved.hostType
+        useTls = saved.useTls
+        tlsVerifyCert = saved.tlsVerifyCert
+        tn3270e = saved.tn3270e
+        graphicsMode = saved.graphicsMode
+        codePage = saved.codePage
+        proxyType = saved.proxyType
+        proxyHost = saved.proxyHost
+        proxyPortStr = if (saved.proxyPort > 0) saved.proxyPort.toString() else ""
+        proxyUsername = saved.proxyUsername
+        proxyPassword = saved.proxyPassword
+        showProxySettings = saved.proxyType != "NONE"
+    }
+
+    fun clearFields() {
+        selectedHostId = null
+        profileName = ""
+        host = ""
+        portStr = ""
+        modelNum = 2
+        dynamicRowsStr = haus.nightmare.a3270.storage.AppSettings.getDynamicRows(context).toString()
+        dynamicColsStr = haus.nightmare.a3270.storage.AppSettings.getDynamicCols(context).toString()
+        luName = ""
+        autoConnect = false
+        hostType = "TSO"
+        useTls = false
+        tlsVerifyCert = true
+        tn3270e = true
+        graphicsMode = "BOTH"
+        codePage = haus.nightmare.a3270.storage.AppSettings.getDefaultCodePage(context)
+        proxyType = "NONE"
+        proxyHost = ""
+        proxyPortStr = ""
+        proxyUsername = ""
+        proxyPassword = ""
+        showProxySettings = false
+    }
+
+    fun saveCurrentProfile(): SavedHost? {
+        val port = portStr.trim().toIntOrNull() ?: if (useTls) 992 else 23
+        val trimmedHost = host.trim()
+        if (trimmedHost.isBlank()) {
+            android.widget.Toast.makeText(context, "Please enter a Host / IP Address", android.widget.Toast.LENGTH_SHORT).show()
+            return null
+        }
+        val nameToSave = profileName.trim().ifBlank { "$trimmedHost:$port" }
+        val dynRows = dynamicRowsStr.trim().toIntOrNull()?.coerceIn(24, 255) ?: 62
+        val dynCols = dynamicColsStr.trim().toIntOrNull()?.coerceIn(80, 255) ?: 160
+        val hostToSave = SavedHost(
+            id = selectedHostId ?: java.util.UUID.randomUUID().toString(),
+            name = nameToSave,
+            host = trimmedHost,
+            port = port,
+            model = modelNum,
+            dynamicRows = dynRows,
+            dynamicCols = dynCols,
+            luName = luName.trim(),
+            autoConnect = autoConnect,
+            hostType = hostType,
+            useTls = useTls,
+            tlsVerifyCert = tlsVerifyCert,
+            tn3270e = tn3270e,
+            graphicsMode = graphicsMode,
+            codePage = codePage,
+            proxyType = proxyType,
+            proxyHost = proxyHost.trim(),
+            proxyPort = proxyPortStr.trim().toIntOrNull() ?: 0,
+            proxyUsername = proxyUsername.trim(),
+            proxyPassword = proxyPassword.trim()
+        )
+        HostStorage.saveHost(context, hostToSave)
+        savedHosts = HostStorage.getSavedHosts(context)
+        selectedHostId = hostToSave.id
+        return hostToSave
+    }
+
+    val focusRequester = remember { FocusRequester() }
+    val keyboardController = LocalSoftwareKeyboardController.current
+
+    LaunchedEffect(Unit) {
+        kotlinx.coroutines.delay(150)
+        focusRequester.requestFocus()
+        keyboardController?.show()
+    }
+
+    Dialog(
+        onDismissRequest = onDismiss,
+        properties = DialogProperties(usePlatformDefaultWidth = false)
+    ) {
+        Surface(
+            shape = RoundedCornerShape(16.dp),
+            color = Color(0xFF1E1E1E),
+            tonalElevation = 6.dp,
+            modifier = Modifier
+                .fillMaxWidth(0.95f)
+                .heightIn(max = 680.dp)
+                .padding(vertical = 16.dp)
+        ) {
+            Column(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(16.dp),
+                verticalArrangement = Arrangement.spacedBy(8.dp)
+            ) {
+                // Title Row
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Text(
+                        "Connect / Manage Hosts",
+                        fontWeight = FontWeight.Bold,
+                        fontSize = 16.sp,
+                        color = Color.White
+                    )
+                    TextButton(
+                        onClick = { clearFields() },
+                        contentPadding = PaddingValues(horizontal = 8.dp, vertical = 2.dp)
+                    ) {
+                        Text("+ New Profile", fontSize = 12.sp, color = Color(0xFF339AF0))
+                    }
+                }
+
+                // Scrollable Content Container
+                Box(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .weight(1f, fill = false)
+                ) {
+                    val scrollState = rememberScrollState()
+                    Column(
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .verticalScroll(scrollState),
+                        verticalArrangement = Arrangement.spacedBy(10.dp)
+                    ) {
+                        // Saved Profiles List Section
+                        if (savedHosts.isNotEmpty()) {
+                            Text(
+                                "Saved Host Profiles:",
+                                fontSize = 11.sp,
+                                fontWeight = FontWeight.Bold,
+                                color = Color.Gray
+                            )
+                            Column(
+                                modifier = Modifier.fillMaxWidth(),
+                                verticalArrangement = Arrangement.spacedBy(4.dp)
+                            ) {
+                                savedHosts.forEach { saved ->
+                                    val isSelected = (saved.id == selectedHostId)
+                                    val tlsTag = if (saved.useTls) {
+                                        if (saved.tlsVerifyCert) " [🔒 TLS]" else " [🔓 TLS/NoVerify]"
+                                    } else ""
+                                    val eTag = if (!saved.tn3270e) " [Non-E]" else ""
+                                    val gfxTag = if (saved.graphicsMode != "NONE") " [GFX: ${saved.graphicsMode}]" else ""
+
+                                    Surface(
+                                        shape = RoundedCornerShape(8.dp),
+                                        color = if (isSelected) Color(0xFF2C3E50) else Color(0xFF25262B),
+                                        border = if (isSelected) androidx.compose.foundation.BorderStroke(1.dp, Color(0xFF339AF0)) else null,
+                                        modifier = Modifier
+                                            .fillMaxWidth()
+                                            .clickable { loadProfile(saved) }
+                                    ) {
+                                        Row(
+                                            modifier = Modifier
+                                                .fillMaxWidth()
+                                                .padding(horizontal = 10.dp, vertical = 6.dp),
+                                            horizontalArrangement = Arrangement.SpaceBetween,
+                                            verticalAlignment = Alignment.CenterVertically
+                                        ) {
+                                            Column(modifier = Modifier.weight(1f)) {
+                                                Text(
+                                                    text = saved.name,
+                                                    fontWeight = FontWeight.SemiBold,
+                                                    fontSize = 13.sp,
+                                                    color = Color.White
+                                                )
+                                                Text(
+                                                    text = "${saved.host}:${saved.port} (${if (saved.model == 0) "Dyn ${saved.dynamicRows}x${saved.dynamicCols}" else "M" + saved.model} - ${saved.hostType})$tlsTag$eTag$gfxTag" +
+                                                            if (saved.autoConnect) " [Auto]" else "",
+                                                    fontSize = 10.sp,
+                                                    color = Color.LightGray
+                                                )
+                                            }
+                                            Row(verticalAlignment = Alignment.CenterVertically) {
+                                                IconButton(
+                                                    onClick = {
+                                                        loadProfile(saved)
+                                                        val hostToConn = saveCurrentProfile() ?: saved
+                                                        onConnect(
+                                                            hostToConn.host,
+                                                            hostToConn.port,
+                                                            hostToConn.model,
+                                                            hostToConn.dynamicRows,
+                                                            hostToConn.dynamicCols,
+                                                            hostToConn.luName,
+                                                            hostToConn.hostType,
+                                                            hostToConn.useTls,
+                                                            hostToConn.tlsVerifyCert,
+                                                            hostToConn.tn3270e,
+                                                            hostToConn.graphicsMode,
+                                                            hostToConn.codePage,
+                                                            hostToConn.proxyType,
+                                                            hostToConn.proxyHost,
+                                                            hostToConn.proxyPort,
+                                                            hostToConn.proxyUsername,
+                                                            hostToConn.proxyPassword
+                                                        )
+                                                    },
+                                                    modifier = Modifier.size(32.dp)
+                                                ) {
+                                                    Text("▶", fontSize = 14.sp, color = Color(0xFF51CF66))
+                                                }
+                                                IconButton(
+                                                    onClick = {
+                                                        HostStorage.deleteHost(context, saved.id)
+                                                        savedHosts = HostStorage.getSavedHosts(context)
+                                                        if (selectedHostId == saved.id) {
+                                                            clearFields()
+                                                        }
+                                                    },
+                                                    modifier = Modifier.size(32.dp)
+                                                ) {
+                                                    Text("✕", fontSize = 13.sp, color = Color(0xFFFF6B6B))
+                                                }
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+                            HorizontalDivider(color = Color(0xFF373A40), modifier = Modifier.padding(vertical = 4.dp))
+                        }
+
+                        Text(
+                            text = if (selectedHostId != null) "Editing Profile:" else "Host Connection Details:",
+                            fontSize = 11.sp,
+                            fontWeight = FontWeight.Bold,
+                            color = Color.Gray
+                        )
+
+                        OutlinedTextField(
+                            value = profileName,
+                            onValueChange = { profileName = it },
+                            label = { Text("Profile Name (Optional)") },
+                            singleLine = true,
+                            keyboardOptions = TerminalKeyboardOptions.copy(imeAction = ImeAction.Next),
+                            modifier = Modifier.fillMaxWidth()
+                        )
+
+                        Row(
+                            modifier = Modifier.fillMaxWidth(),
+                            horizontalArrangement = Arrangement.spacedBy(8.dp)
+                        ) {
+                            OutlinedTextField(
+                                value = host,
+                                onValueChange = { host = it.filterNot { c -> c.isWhitespace() } },
+                                label = { Text("Host / IP Address") },
+                                placeholder = { Text("127.0.0.1", color = Color.Gray) },
+                                singleLine = true,
+                                keyboardOptions = TerminalKeyboardOptions.copy(imeAction = ImeAction.Next),
+                                modifier = Modifier
+                                    .weight(0.68f)
+                                    .focusRequester(focusRequester)
+                            )
+                            OutlinedTextField(
+                                value = portStr,
+                                onValueChange = { portStr = it.filter { c -> c.isDigit() } },
+                                label = { Text("Port") },
+                                placeholder = { Text(if (useTls) "992" else "23", color = Color.Gray) },
+                                singleLine = true,
+                                keyboardOptions = TerminalKeyboardOptions.copy(imeAction = ImeAction.Next),
+                                modifier = Modifier.weight(0.32f)
+                            )
+                        }
+
+                        // Terminal Model Selector
+                        Column(modifier = Modifier.fillMaxWidth()) {
+                            Text("Terminal Model:", fontSize = 11.sp, color = Color.Gray)
+                            Spacer(modifier = Modifier.height(4.dp))
+                            Row(
+                                modifier = Modifier.fillMaxWidth(),
+                                horizontalArrangement = Arrangement.spacedBy(6.dp)
+                            ) {
+                                listOf(
+                                    2 to "M2",
+                                    3 to "M3",
+                                    4 to "M4",
+                                    5 to "M5",
+                                    0 to "DYN"
+                                ).forEach { (m, label) ->
+                                    val isSelected = (modelNum == m)
+                                    Surface(
+                                        shape = RoundedCornerShape(6.dp),
+                                        color = if (isSelected) Color(0xFF1C7ED6) else Color(0xFF2C2D30),
+                                        modifier = Modifier
+                                            .weight(1f)
+                                            .height(34.dp)
+                                            .clickable { modelNum = m }
+                                    ) {
+                                        Box(
+                                            contentAlignment = Alignment.Center,
+                                            modifier = Modifier.fillMaxSize().padding(horizontal = 2.dp)
+                                        ) {
+                                            Text(
+                                                text = label,
+                                                color = Color.White,
+                                                fontSize = 11.sp,
+                                                fontWeight = if (isSelected) FontWeight.Bold else FontWeight.Normal,
+                                                textAlign = TextAlign.Center
+                                            )
+                                        }
+                                    }
+                                }
+                            }
+
+                            // If Dynamic Model selected, allow specifying Rows and Columns
+                            if (modelNum == 0) {
+                                Spacer(modifier = Modifier.height(6.dp))
+                                Row(
+                                    modifier = Modifier.fillMaxWidth(),
+                                    horizontalArrangement = Arrangement.spacedBy(8.dp)
+                                ) {
+                                    OutlinedTextField(
+                                        value = dynamicRowsStr,
+                                        onValueChange = { dynamicRowsStr = it },
+                                        label = { Text("Dyn Rows (24-255)") },
+                                        singleLine = true,
+                                        modifier = Modifier.weight(1f),
+                                        keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Number)
+                                    )
+                                    OutlinedTextField(
+                                        value = dynamicColsStr,
+                                        onValueChange = { dynamicColsStr = it },
+                                        label = { Text("Dyn Cols (80-255)") },
+                                        singleLine = true,
+                                        modifier = Modifier.weight(1f),
+                                        keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Number)
+                                    )
+                                }
+                            }
+                        }
+
+                        // Host System Type (TSO, CMS, CICS)
+                        Column(modifier = Modifier.fillMaxWidth()) {
+                            Text("Host System Type:", fontSize = 11.sp, color = Color.Gray)
+                            Spacer(modifier = Modifier.height(4.dp))
+                            Row(
+                                modifier = Modifier.fillMaxWidth(),
+                                horizontalArrangement = Arrangement.spacedBy(6.dp)
+                            ) {
+                                listOf("TSO", "CMS", "CICS").forEach { ht ->
+                                    val isSelected = (hostType == ht)
+                                    Surface(
+                                        shape = RoundedCornerShape(6.dp),
+                                        color = if (isSelected) Color(0xFF1C7ED6) else Color(0xFF2C2D30),
+                                        modifier = Modifier
+                                            .weight(1f)
+                                            .height(34.dp)
+                                            .clickable { hostType = ht }
+                                    ) {
+                                        Box(
+                                            contentAlignment = Alignment.Center,
+                                            modifier = Modifier.fillMaxSize()
+                                        ) {
+                                            Text(
+                                                text = ht,
+                                                color = Color.White,
+                                                fontSize = 11.sp,
+                                                fontWeight = if (isSelected) FontWeight.Bold else FontWeight.Normal
+                                            )
+                                        }
+                                    }
+                                }
+                            }
+                        }
+
+                        // Graphics Mode (Both, Vector, Symbols, Off)
+                        Column(modifier = Modifier.fillMaxWidth()) {
+                            Text("Graphics Mode:", fontSize = 11.sp, color = Color.Gray)
+                            Spacer(modifier = Modifier.height(4.dp))
+                            Row(
+                                modifier = Modifier.fillMaxWidth(),
+                                horizontalArrangement = Arrangement.spacedBy(6.dp)
+                            ) {
+                                listOf(
+                                    "BOTH" to "Both",
+                                    "VECTOR_GRAPHICS" to "Vector",
+                                    "PROGRAMMED_SYMBOLS" to "Symbols",
+                                    "NONE" to "Off"
+                                ).forEach { (modeKey, modeLabel) ->
+                                    val isSelected = graphicsMode.equals(modeKey, ignoreCase = true)
+                                    Surface(
+                                        shape = RoundedCornerShape(6.dp),
+                                        color = if (isSelected) Color(0xFF2B8A3E) else Color(0xFF2C2D30),
+                                        modifier = Modifier
+                                            .weight(1f)
+                                            .height(34.dp)
+                                            .clickable { graphicsMode = modeKey }
+                                    ) {
+                                        Box(
+                                            contentAlignment = Alignment.Center,
+                                            modifier = Modifier.fillMaxSize().padding(horizontal = 2.dp)
+                                        ) {
+                                            Text(
+                                                text = modeLabel,
+                                                color = Color.White,
+                                                fontSize = 11.sp,
+                                                fontWeight = if (isSelected) FontWeight.Bold else FontWeight.Normal,
+                                                textAlign = TextAlign.Center
+                                            )
+                                        }
+                                    }
+                                }
+                            }
+                        }
+
+                        // Code Page Selector
+                        var codePageMenuExpanded by remember { mutableStateOf(false) }
+                        val codePagesList = HostStorage.AVAILABLE_CODE_PAGES
+                        val selectedCpLabel = codePagesList.firstOrNull { it.first == codePage }?.second ?: "Code Page $codePage"
+
+                        Column(modifier = Modifier.fillMaxWidth()) {
+                            Text("EBCDIC Code Page:", fontSize = 11.sp, color = Color.Gray)
+                            Spacer(modifier = Modifier.height(4.dp))
+                            Box(modifier = Modifier.fillMaxWidth()) {
+                                Surface(
+                                    shape = RoundedCornerShape(6.dp),
+                                    color = Color(0xFF2C2D30),
+                                    border = androidx.compose.foundation.BorderStroke(1.dp, Color(0xFF495057)),
+                                    modifier = Modifier
+                                        .fillMaxWidth()
+                                        .height(38.dp)
+                                        .clickable { codePageMenuExpanded = true }
+                                ) {
+                                    Row(
+                                        modifier = Modifier
+                                            .fillMaxSize()
+                                            .padding(horizontal = 10.dp),
+                                        horizontalArrangement = Arrangement.SpaceBetween,
+                                        verticalAlignment = Alignment.CenterVertically
+                                    ) {
+                                        Text(
+                                            text = selectedCpLabel,
+                                            color = Color.White,
+                                            fontSize = 12.sp,
+                                            fontWeight = FontWeight.Medium
+                                        )
+                                        Text("▼", color = Color.Gray, fontSize = 10.sp)
+                                    }
+                                }
+                                DropdownMenu(
+                                    expanded = codePageMenuExpanded,
+                                    onDismissRequest = { codePageMenuExpanded = false },
+                                    modifier = Modifier
+                                        .background(Color(0xFF2C2D30))
+                                        .heightIn(max = 280.dp)
+                                ) {
+                                    codePagesList.forEach { (cpId, label) ->
+                                        DropdownMenuItem(
+                                            text = {
+                                                Text(
+                                                    text = label,
+                                                    fontSize = 12.sp,
+                                                    color = if (codePage == cpId) Color(0xFF339AF0) else Color.White,
+                                                    fontWeight = if (codePage == cpId) FontWeight.Bold else FontWeight.Normal
+                                                )
+                                            },
+                                            onClick = {
+                                                codePage = cpId
+                                                codePageMenuExpanded = false
+                                            }
+                                        )
+                                    }
+                                }
+                            }
+                        }
+
+                        OutlinedTextField(
+                            value = luName,
+                            onValueChange = { luName = it },
+                            label = { Text("LU Name / Device Pool (Optional)") },
+                            singleLine = true,
+                            keyboardOptions = TerminalKeyboardOptions.copy(imeAction = ImeAction.Done),
+                            modifier = Modifier.fillMaxWidth()
+                        )
+
+                        // Protocol & Security Options
+                        Column(
+                            modifier = Modifier.fillMaxWidth(),
+                            verticalArrangement = Arrangement.spacedBy(2.dp)
+                        ) {
+                            // TLS / SSL Checkbox
+                            Row(
+                                verticalAlignment = Alignment.CenterVertically,
+                                modifier = Modifier
+                                    .fillMaxWidth()
+                                    .clickable {
+                                        val newTls = !useTls
+                                        useTls = newTls
+                                        if (newTls && portStr.trim() == "23") {
+                                            portStr = "992"
+                                        } else if (!newTls && portStr.trim() == "992") {
+                                            portStr = "23"
+                                        }
+                                    }
+                            ) {
+                                Checkbox(
+                                    checked = useTls,
+                                    onCheckedChange = { checked ->
+                                        useTls = checked
+                                        if (checked && portStr.trim() == "23") {
+                                            portStr = "992"
+                                        } else if (!checked && portStr.trim() == "992") {
+                                            portStr = "23"
+                                        }
+                                    }
+                                )
+                                Spacer(modifier = Modifier.width(4.dp))
+                                Text("Enable TLS / SSL Connection", fontSize = 12.sp, color = Color.White)
+                            }
+
+                            // Verify Certificate Checkbox (only when TLS is active)
+                            if (useTls) {
+                                Row(
+                                    verticalAlignment = Alignment.CenterVertically,
+                                    modifier = Modifier
+                                        .fillMaxWidth()
+                                        .padding(start = 24.dp)
+                                        .clickable { tlsVerifyCert = !tlsVerifyCert }
+                                ) {
+                                    Checkbox(
+                                        checked = tlsVerifyCert,
+                                        onCheckedChange = { tlsVerifyCert = it }
+                                    )
+                                    Spacer(modifier = Modifier.width(4.dp))
+                                    Text(
+                                        "Verify Server Certificate",
+                                        fontSize = 12.sp,
+                                        color = if (tlsVerifyCert) Color.LightGray else Color(0xFFFFB450)
+                                    )
+                                }
+                            }
+
+                            // TN3270E Checkbox
+                            Row(
+                                verticalAlignment = Alignment.CenterVertically,
+                                modifier = Modifier
+                                    .fillMaxWidth()
+                                    .clickable { tn3270e = !tn3270e }
+                            ) {
+                                Checkbox(
+                                    checked = tn3270e,
+                                    onCheckedChange = { tn3270e = it }
+                                )
+                                Spacer(modifier = Modifier.width(4.dp))
+                                Text("Enable TN3270E (Extended 3270)", fontSize = 12.sp, color = Color.White)
+                            }
+
+                            // Auto-connect Checkbox
+                            Row(
+                                verticalAlignment = Alignment.CenterVertically,
+                                modifier = Modifier
+                                    .fillMaxWidth()
+                                    .clickable { autoConnect = !autoConnect }
+                            ) {
+                                Checkbox(
+                                    checked = autoConnect,
+                                    onCheckedChange = { autoConnect = it }
+                                )
+                                Spacer(modifier = Modifier.width(4.dp))
+                                Text("Auto-connect on app startup", fontSize = 12.sp, color = Color.White)
+                            }
+
+                            // Proxy Settings Expandable Section
+                            Row(
+                                verticalAlignment = Alignment.CenterVertically,
+                                modifier = Modifier
+                                    .fillMaxWidth()
+                                    .clickable { showProxySettings = !showProxySettings }
+                            ) {
+                                Checkbox(
+                                    checked = showProxySettings || proxyType != "NONE",
+                                    onCheckedChange = { checked ->
+                                        showProxySettings = checked
+                                        if (!checked) proxyType = "NONE"
+                                    }
+                                )
+                                Spacer(modifier = Modifier.width(4.dp))
+                                Text(
+                                    text = if (proxyType != "NONE") "Proxy Active ($proxyType)" else "Configure Network Proxy",
+                                    fontSize = 12.sp,
+                                    color = if (proxyType != "NONE") Color(0xFF339AF0) else Color.White
+                                )
+                            }
+
+                            if (showProxySettings || proxyType != "NONE") {
+                                Card(
+                                    colors = CardDefaults.cardColors(containerColor = Color(0xFF25262B)),
+                                    modifier = Modifier.fillMaxWidth().padding(start = 8.dp, end = 4.dp, top = 4.dp)
+                                ) {
+                                    Column(
+                                        modifier = Modifier.padding(8.dp),
+                                        verticalArrangement = Arrangement.spacedBy(6.dp)
+                                    ) {
+                                        Text("Proxy Protocol:", fontSize = 11.sp, color = Color.Gray)
+                                        Row(
+                                            modifier = Modifier.fillMaxWidth(),
+                                            horizontalArrangement = Arrangement.spacedBy(4.dp)
+                                        ) {
+                                            listOf("NONE", "HTTP", "SOCKS4", "SOCKS5").forEach { pType ->
+                                                val isSel = proxyType == pType
+                                                FilterChip(
+                                                    selected = isSel,
+                                                    onClick = { proxyType = pType },
+                                                    label = { Text(pType, fontSize = 10.sp) }
+                                                )
+                                            }
+                                        }
+
+                                        if (proxyType != "NONE") {
+                                            Row(
+                                                modifier = Modifier.fillMaxWidth(),
+                                                horizontalArrangement = Arrangement.spacedBy(6.dp)
+                                            ) {
+                                                OutlinedTextField(
+                                                    value = proxyHost,
+                                                    onValueChange = { proxyHost = it },
+                                                    label = { Text("Proxy Host") },
+                                                    singleLine = true,
+                                                    keyboardOptions = TerminalKeyboardOptions,
+                                                    modifier = Modifier.weight(0.7f)
+                                                )
+                                                OutlinedTextField(
+                                                    value = proxyPortStr,
+                                                    onValueChange = { proxyPortStr = it },
+                                                    label = { Text("Port") },
+                                                    placeholder = { Text(if (proxyType == "HTTP") "8080" else "1080") },
+                                                    singleLine = true,
+                                                    keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Number),
+                                                    modifier = Modifier.weight(0.3f)
+                                                )
+                                            }
+
+                                            Row(
+                                                modifier = Modifier.fillMaxWidth(),
+                                                horizontalArrangement = Arrangement.spacedBy(6.dp)
+                                            ) {
+                                                OutlinedTextField(
+                                                    value = proxyUsername,
+                                                    onValueChange = { proxyUsername = it },
+                                                    label = { Text("User (Opt)") },
+                                                    singleLine = true,
+                                                    keyboardOptions = TerminalKeyboardOptions,
+                                                    modifier = Modifier.weight(0.5f)
+                                                )
+                                                OutlinedTextField(
+                                                    value = proxyPassword,
+                                                    onValueChange = { proxyPassword = it },
+                                                    label = { Text("Pass (Opt)") },
+                                                    singleLine = true,
+                                                    keyboardOptions = TerminalKeyboardOptions,
+                                                    modifier = Modifier.weight(0.5f)
+                                                )
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+
+                // Action Buttons Row
+                Row(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(top = 4.dp),
+                    horizontalArrangement = Arrangement.End,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    TextButton(onClick = onDismiss) {
+                        Text("Cancel", color = Color.LightGray)
+                    }
+                    Spacer(modifier = Modifier.width(6.dp))
+                    OutlinedButton(onClick = { saveCurrentProfile() }) {
+                        Text("Save")
+                    }
+                    Spacer(modifier = Modifier.width(6.dp))
+                    Button(
+                        onClick = {
+                            val saved = saveCurrentProfile()
+                            if (saved != null) {
+                                onConnect(
+                                    saved.host,
+                                    saved.port,
+                                    saved.model,
+                                    saved.dynamicRows,
+                                    saved.dynamicCols,
+                                    saved.luName,
+                                    saved.hostType,
+                                    saved.useTls,
+                                    saved.tlsVerifyCert,
+                                    saved.tn3270e,
+                                    saved.graphicsMode,
+                                    saved.codePage,
+                                    saved.proxyType,
+                                    saved.proxyHost,
+                                    saved.proxyPort,
+                                    saved.proxyUsername,
+                                    saved.proxyPassword
+                                )
+                            }
+                        },
+                        colors = ButtonDefaults.buttonColors(containerColor = Color(0xFF2B8A3E))
+                    ) {
+                        Text("Connect", color = Color.White, fontWeight = FontWeight.Bold)
+                    }
+                }
+            }
+        }
+    }
+}

src/main/java/haus/nightmare/a3270/ui/FieldInspectorDialog.kt

@@ -0,0 +1,214 @@
+package haus.nightmare.a3270.ui
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.horizontalScroll
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.itemsIndexed
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.compose.ui.window.Dialog
+import androidx.compose.ui.window.DialogProperties
+import haus.nightmare.lib3270j.Telnet3270Client
+import haus.nightmare.lib3270j.ecl.ECLField
+
+@Composable
+fun FieldInspectorDialog(
+    client: Telnet3270Client?,
+    screenVersion: Long,
+    onDismiss: () -> Unit,
+    onJumpToField: (Int) -> Unit
+) {
+    var fields by remember { mutableStateOf<List<ECLField>>(emptyList()) }
+    var selectedIndex by remember { mutableIntStateOf(-1) }
+    var cols by remember { mutableIntStateOf(80) }
+    var rows by remember { mutableIntStateOf(24) }
+
+    fun refresh() {
+        if (client != null && client.connectionState.isFullSession) {
+            val fieldList = client.fieldList
+            fields = fieldList?.fields ?: emptyList()
+            cols = client.screenBuffer?.cols ?: 80
+            rows = client.screenBuffer?.rows ?: 24
+        } else {
+            fields = emptyList()
+        }
+    }
+
+    LaunchedEffect(screenVersion, client) {
+        refresh()
+    }
+
+    Dialog(
+        onDismissRequest = onDismiss,
+        properties = DialogProperties(usePlatformDefaultWidth = false)
+    ) {
+        Card(
+            shape = RoundedCornerShape(16.dp),
+            colors = CardDefaults.cardColors(containerColor = Color(0xFF1E1E1E)),
+            modifier = Modifier
+                .fillMaxWidth(0.95f)
+                .heightIn(max = 680.dp)
+                .padding(vertical = 16.dp)
+        ) {
+            Column(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(16.dp),
+                verticalArrangement = Arrangement.spacedBy(8.dp)
+            ) {
+                // Header
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Column {
+                        Text(
+                            "Presentation Space Field Inspector",
+                            fontWeight = FontWeight.Bold,
+                            fontSize = 15.sp,
+                            color = Color.White
+                        )
+                        Text(
+                            "${fields.size} fields detected (${rows}x$cols)",
+                            fontSize = 11.sp,
+                            color = Color.Gray
+                        )
+                    }
+                    TextButton(onClick = { refresh() }) {
+                        Text("Refresh", fontSize = 12.sp, color = Color(0xFF339AF0))
+                    }
+                }
+
+                HorizontalDivider(color = Color(0xFF2C2D30))
+
+                if (fields.isEmpty()) {
+                    Box(
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .weight(1f),
+                        contentAlignment = Alignment.Center
+                    ) {
+                        Text(
+                            "No fields detected or terminal not in 3270 session.",
+                            color = Color.Gray,
+                            fontSize = 12.sp
+                        )
+                    }
+                } else {
+                    val horizScroll = rememberScrollState()
+
+                    Column(
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .weight(1f)
+                            .horizontalScroll(horizScroll)
+                    ) {
+                        // Header Row
+                        Row(
+                            modifier = Modifier
+                                .background(Color(0xFF25262B))
+                                .padding(vertical = 6.dp, horizontal = 4.dp),
+                            verticalAlignment = Alignment.CenterVertically
+                        ) {
+                            Text("#", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(30.dp), textAlign = TextAlign.Center)
+                            Text("Pos", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(42.dp), textAlign = TextAlign.Center)
+                            Text("Start", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(52.dp), textAlign = TextAlign.Center)
+                            Text("End", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(52.dp), textAlign = TextAlign.Center)
+                            Text("Len", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(36.dp), textAlign = TextAlign.Center)
+                            Text("Prot", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(36.dp), textAlign = TextAlign.Center)
+                            Text("MDT", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(36.dp), textAlign = TextAlign.Center)
+                            Text("Num", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(36.dp), textAlign = TextAlign.Center)
+                            Text("Hi-Int", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(44.dp), textAlign = TextAlign.Center)
+                            Text("Hidden", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(46.dp), textAlign = TextAlign.Center)
+                            Text("Pen", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(36.dp), textAlign = TextAlign.Center)
+                            Text("Wrap", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(36.dp), textAlign = TextAlign.Center)
+                            Text("Content Text", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(220.dp), textAlign = TextAlign.Start)
+                        }
+
+                        // Data Rows
+                        LazyColumn(
+                            modifier = Modifier.fillMaxSize(),
+                            verticalArrangement = Arrangement.spacedBy(2.dp)
+                        ) {
+                            itemsIndexed(fields) { idx, field ->
+                                val isSelected = (idx == selectedIndex)
+                                val startRow = field.startRow + 1
+                                val startCol = field.startCol + 1
+                                val endRow = field.endRow + 1
+                                val endCol = field.endCol + 1
+
+                                val displayText = if (field.isHidden) "••••••••" else field.text
+
+                                Surface(
+                                    shape = RoundedCornerShape(4.dp),
+                                    color = if (isSelected) Color(0xFF1C7ED6).copy(alpha = 0.35f) else if (idx % 2 == 0) Color(0xFF161719) else Color(0xFF1E1F23),
+                                    modifier = Modifier
+                                        .fillMaxWidth()
+                                        .clickable {
+                                            selectedIndex = idx
+                                            onJumpToField(field.dataStart)
+                                        }
+                                ) {
+                                    Row(
+                                        modifier = Modifier.padding(vertical = 4.dp, horizontal = 4.dp),
+                                        verticalAlignment = Alignment.CenterVertically
+                                    ) {
+                                        Text("${idx + 1}", color = Color.White, fontSize = 11.sp, modifier = Modifier.width(30.dp), textAlign = TextAlign.Center)
+                                        Text("${field.start}", color = Color.Cyan, fontSize = 10.sp, fontFamily = FontFamily.Monospace, modifier = Modifier.width(42.dp), textAlign = TextAlign.Center)
+                                        Text(String.format("%02d/%02d", startRow, startCol), color = Color.LightGray, fontSize = 10.sp, fontFamily = FontFamily.Monospace, modifier = Modifier.width(52.dp), textAlign = TextAlign.Center)
+                                        Text(String.format("%02d/%02d", endRow, endCol), color = Color.LightGray, fontSize = 10.sp, fontFamily = FontFamily.Monospace, modifier = Modifier.width(52.dp), textAlign = TextAlign.Center)
+                                        Text("${field.length}", color = Color.White, fontSize = 10.sp, modifier = Modifier.width(36.dp), textAlign = TextAlign.Center)
+                                        Text(if (field.isProtected) "Y" else "-", color = if (field.isProtected) Color.Gray else Color(0xFF51CF66), fontSize = 10.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(36.dp), textAlign = TextAlign.Center)
+                                        Text(if (field.isModified) "Y" else "-", color = if (field.isModified) Color(0xFFFFB450) else Color.Gray, fontSize = 10.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(36.dp), textAlign = TextAlign.Center)
+                                        Text(if (field.isNumeric) "Y" else "-", color = Color.LightGray, fontSize = 10.sp, modifier = Modifier.width(36.dp), textAlign = TextAlign.Center)
+                                        Text(if (field.isHighIntensity) "Y" else "-", color = if (field.isHighIntensity) Color.White else Color.Gray, fontSize = 10.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(44.dp), textAlign = TextAlign.Center)
+                                        Text(if (field.isHidden) "Y" else "-", color = if (field.isHidden) Color(0xFFFF6B6B) else Color.Gray, fontSize = 10.sp, modifier = Modifier.width(46.dp), textAlign = TextAlign.Center)
+                                        Text(if (field.isPenSelectable) "Y" else "-", color = if (field.isPenSelectable) Color.Yellow else Color.Gray, fontSize = 10.sp, modifier = Modifier.width(36.dp), textAlign = TextAlign.Center)
+                                        Text(if (field.isWrapped) "↩" else "-", color = if (field.isWrapped) Color(0xFF339AF0) else Color.Gray, fontSize = 10.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(36.dp), textAlign = TextAlign.Center)
+                                        Text(displayText, color = if (field.isProtected) Color(0xFF90CAF9) else Color(0xFFA5D6A7), fontSize = 11.sp, fontFamily = FontFamily.Monospace, maxLines = 1, modifier = Modifier.width(220.dp))
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+
+                // Bottom Buttons
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.End,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    if (selectedIndex in fields.indices) {
+                        Button(
+                            onClick = {
+                                onJumpToField(fields[selectedIndex].dataStart)
+                                onDismiss()
+                            },
+                            colors = ButtonDefaults.buttonColors(containerColor = Color(0xFF1C7ED6))
+                        ) {
+                            Text("Jump to Field")
+                        }
+                        Spacer(modifier = Modifier.width(8.dp))
+                    }
+                    TextButton(onClick = onDismiss) {
+                        Text("Close", color = Color.LightGray)
+                    }
+                }
+            }
+        }
+    }
+}

src/main/java/haus/nightmare/a3270/ui/FileTransferDialog.kt

@@ -0,0 +1,625 @@
+package haus.nightmare.a3270.ui
+
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import android.os.Environment
+import android.provider.OpenableColumns
+import android.widget.Toast
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.ImeAction
+import androidx.compose.ui.text.input.KeyboardCapitalization
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import haus.nightmare.lib3270j.ft.FTConfig
+import haus.nightmare.a3270.FTProgressState
+import java.io.File
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
+
+private val TerminalKeyboardOptions = KeyboardOptions(
+    capitalization = KeyboardCapitalization.None,
+    autoCorrect = false,
+    keyboardType = KeyboardType.Ascii
+)
+
+data class LastTransferState(
+    val hostFile: String = "",
+    val localFile: String = "",
+    val isReceive: Boolean = true,
+    val isAscii: Boolean = true,
+    val hostType: FTConfig.HostType = FTConfig.HostType.TSO,
+    val recfm: FTConfig.RecordFormat = FTConfig.RecordFormat.DEFAULT,
+    val lreclStr: String = "",
+    val blksizeStr: String = "",
+    val spaceStr: String = "",
+    val cmsOptions: String = ""
+)
+private var lastTransferState: LastTransferState? = null
+
+fun formatHostFilename(localName: String, hostType: FTConfig.HostType): String {
+    if (hostType == FTConfig.HostType.CMS) {
+        val lastDot = localName.lastIndexOf('.')
+        return if (lastDot > 0) {
+            val fn = localName.substring(0, lastDot).replace(Regex("[^a-zA-Z0-9]"), "").uppercase()
+            val ft = localName.substring(lastDot + 1).replace(Regex("[^a-zA-Z0-9]"), "").uppercase()
+            "${fn.ifBlank { "FILE" }} ${ft.ifBlank { "TEXT" }} A"
+        } else {
+            val clean = localName.replace(Regex("[^a-zA-Z0-9]"), "").uppercase()
+            "${clean.ifBlank { "FILE" }} FILE A"
+        }
+    } else if (hostType == FTConfig.HostType.TSO) {
+        val cleanBase = localName.substringBeforeLast('.').replace(Regex("[^a-zA-Z0-9]"), "").uppercase()
+        return "'${cleanBase.ifBlank { "DATA" }}'"
+    }
+    return localName
+}
+
+fun formatLocalFilenameFromHost(hostFile: String, hostType: FTConfig.HostType): String {
+    val cleanName = hostFile.trim('\'', '"')
+    if (hostType == FTConfig.HostType.CMS) {
+        val tokens = cleanName.trim().split(Regex("\\s+"))
+        if (tokens.size >= 2) {
+            return "${tokens[0].lowercase()}.${tokens[1].lowercase()}"
+        } else if (tokens.size == 1 && tokens[0].isNotBlank()) {
+            return "${tokens[0].lowercase()}.txt"
+        }
+    } else {
+        val lastDot = cleanName.lastIndexOf('.')
+        if (lastDot > 0) {
+            return "${cleanName.substring(lastDot + 1).lowercase()}.txt"
+        }
+    }
+    return if (cleanName.isNotBlank()) "${cleanName.lowercase()}.txt" else "download.txt"
+}
+
+@Composable
+fun FileTransferDialog(
+    initialHostType: String = "TSO",
+    ftProgressState: FTProgressState = FTProgressState(),
+    client: haus.nightmare.lib3270j.Telnet3270Client? = null,
+    onDismiss: () -> Unit,
+    onStartTransfer: (FTConfig) -> Unit,
+    onCancelTransfer: () -> Unit = {}
+) {
+    val context = LocalContext.current
+
+    val initialTypeEnum = when (initialHostType.uppercase()) {
+        "CMS", "VM/CMS", "VM" -> FTConfig.HostType.CMS
+        "CICS" -> FTConfig.HostType.CICS
+        else -> FTConfig.HostType.TSO
+    }
+
+    var hostFile by remember { mutableStateOf(lastTransferState?.hostFile ?: "") }
+    var localFile by remember { mutableStateOf(lastTransferState?.localFile ?: "") }
+    var localDisplayName by remember { mutableStateOf("") }
+    var isReceive by remember { mutableStateOf(lastTransferState?.isReceive ?: true) }
+    var isAscii by remember { mutableStateOf(lastTransferState?.isAscii ?: true) }
+    var hostType by remember { mutableStateOf(lastTransferState?.hostType ?: initialTypeEnum) }
+    var recfm by remember { mutableStateOf(lastTransferState?.recfm ?: FTConfig.RecordFormat.DEFAULT) }
+    var lreclStr by remember { mutableStateOf(lastTransferState?.lreclStr ?: "") }
+    var blksizeStr by remember { mutableStateOf(lastTransferState?.blksizeStr ?: "") }
+    var spaceStr by remember { mutableStateOf(lastTransferState?.spaceStr ?: "") }
+    var cmsOptions by remember { mutableStateOf(lastTransferState?.cmsOptions ?: "") }
+    var overwrite by remember { mutableStateOf(true) }
+    var showBrowseDialog by remember { mutableStateOf(false) }
+
+    var targetSaveUri by remember { mutableStateOf<Uri?>(null) }
+    var lastSavedFile by remember { mutableStateOf<File?>(null) }
+
+    // SAF Launcher for uploading (Send / PUT)
+    val openDocumentLauncher = rememberLauncherForActivityResult(
+        contract = ActivityResultContracts.OpenDocument()
+    ) { uri: Uri? ->
+        if (uri != null) {
+            try {
+                val displayName = getFileNameFromUri(context, uri).ifBlank { "upload.bin" }
+                val tempDir = File(context.cacheDir, "ft_upload").apply { if (!exists()) mkdirs() }
+                val tempFile = File(tempDir, displayName)
+                context.contentResolver.openInputStream(uri)?.use { input ->
+                    tempFile.outputStream().use { output ->
+                        input.copyTo(output)
+                    }
+                }
+                localFile = tempFile.absolutePath
+                localDisplayName = displayName
+                if (hostFile.isBlank()) {
+                    hostFile = formatHostFilename(displayName, hostType)
+                }
+                Toast.makeText(context, "Selected: $displayName", Toast.LENGTH_SHORT).show()
+            } catch (e: Exception) {
+                Toast.makeText(context, "Failed to read file: ${e.message}", Toast.LENGTH_SHORT).show()
+            }
+        }
+    }
+
+    // SAF Launcher for choosing download destination (Receive / GET)
+    val createDocumentLauncher = rememberLauncherForActivityResult(
+        contract = ActivityResultContracts.CreateDocument("*/*")
+    ) { uri: Uri? ->
+        if (uri != null) {
+            targetSaveUri = uri
+            val displayName = getFileNameFromUri(context, uri).ifBlank { "download.bin" }
+            localDisplayName = displayName
+            val tempDir = File(context.cacheDir, "ft_download").apply { if (!exists()) mkdirs() }
+            val tempFile = File(tempDir, displayName)
+            localFile = tempFile.absolutePath
+            Toast.makeText(context, "Destination: $displayName", Toast.LENGTH_SHORT).show()
+        }
+    }
+
+    // Watch for completed transfers to export to destination URI if chosen
+    LaunchedEffect(ftProgressState.isActive, ftProgressState.isError) {
+        if (!ftProgressState.isActive && !ftProgressState.isError && ftProgressState.bytesTransferred > 0 && isReceive && localFile.isNotBlank()) {
+            val src = File(localFile)
+            if (src.exists()) {
+                lastSavedFile = src
+                val uri = targetSaveUri
+                if (uri != null) {
+                    try {
+                        context.contentResolver.openOutputStream(uri)?.use { out ->
+                            src.inputStream().use { input ->
+                                input.copyTo(out)
+                            }
+                        }
+                        Toast.makeText(context, "Saved download to destination file", Toast.LENGTH_SHORT).show()
+                    } catch (e: Exception) {
+                        Toast.makeText(context, "Failed writing to destination: ${e.message}", Toast.LENGTH_SHORT).show()
+                    }
+                }
+            }
+        }
+    }
+
+    if (showBrowseDialog) {
+        HostDirectoryDialog(
+            client = client,
+            initialHostType = hostType,
+            initialQuery = hostFile,
+            onDismiss = { showBrowseDialog = false },
+            onSelectDataset = { selected ->
+                hostFile = selected
+                if (localFile.isBlank()) {
+                    val safeName = formatLocalFilenameFromHost(selected, hostType)
+                    val tempDir = File(context.cacheDir, "ft_download").apply { if (!exists()) mkdirs() }
+                    val tempFile = File(tempDir, safeName)
+                    localFile = tempFile.absolutePath
+                    localDisplayName = safeName
+                }
+                showBrowseDialog = false
+            }
+        )
+    }
+
+    fun exportToDownloads() {
+        val src = lastSavedFile ?: if (localFile.isNotBlank()) File(localFile) else null
+        if (src == null || !src.exists()) {
+            Toast.makeText(context, "Downloaded file not found", Toast.LENGTH_SHORT).show()
+            return
+        }
+        try {
+            val downloadsDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
+            if (!downloadsDir.exists()) downloadsDir.mkdirs()
+            val timeStamp = SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US).format(Date())
+            val targetName = (if (localDisplayName.isNotBlank()) localDisplayName else src.name).let {
+                val base = it.substringBeforeLast('.')
+                val ext = if (it.contains('.')) "." + it.substringAfterLast('.') else ""
+                "${base}_$timeStamp$ext"
+            }
+            val dst = File(downloadsDir, targetName)
+            src.copyTo(dst, overwrite = true)
+            Toast.makeText(context, "Exported to Downloads/${dst.name}", Toast.LENGTH_LONG).show()
+        } catch (e: Exception) {
+            Toast.makeText(context, "Export failed: ${e.message}", Toast.LENGTH_SHORT).show()
+        }
+    }
+
+    fun shareDownloadedFile() {
+        val src = lastSavedFile ?: if (localFile.isNotBlank()) File(localFile) else null
+        if (src == null || !src.exists()) {
+            Toast.makeText(context, "Downloaded file not found", Toast.LENGTH_SHORT).show()
+            return
+        }
+        try {
+            val text = src.readText()
+            val intent = Intent(Intent.ACTION_SEND).apply {
+                type = "text/plain"
+                putExtra(Intent.EXTRA_SUBJECT, localDisplayName.ifBlank { src.name })
+                putExtra(Intent.EXTRA_TEXT, text)
+            }
+            context.startActivity(Intent.createChooser(intent, "Share Transferred File"))
+        } catch (e: Exception) {
+            Toast.makeText(context, "Share failed: ${e.message}", Toast.LENGTH_SHORT).show()
+        }
+    }
+
+    AlertDialog(
+        onDismissRequest = onDismiss,
+        title = {
+            Text("IND\$FILE File Transfer", fontWeight = FontWeight.Bold, fontSize = 16.sp)
+        },
+        text = {
+            Column(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .verticalScroll(rememberScrollState())
+                    .padding(vertical = 4.dp),
+                verticalArrangement = Arrangement.spacedBy(8.dp)
+            ) {
+                // Active Transfer Progress Banner
+                if (ftProgressState.isActive || ftProgressState.isRunning) {
+                    Card(
+                        colors = CardDefaults.cardColors(containerColor = Color(0xFF25262B)),
+                        modifier = Modifier.fillMaxWidth()
+                    ) {
+                        Column(
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .padding(12.dp),
+                            verticalArrangement = Arrangement.spacedBy(6.dp)
+                        ) {
+                            Text(
+                                text = ftProgressState.statusMessage.ifBlank { "Transferring..." },
+                                fontSize = 13.sp,
+                                fontWeight = FontWeight.SemiBold,
+                                color = if (ftProgressState.isError) Color(0xFFFF6B6B) else Color(0xFF51CF66)
+                            )
+                            LinearProgressIndicator(modifier = Modifier.fillMaxWidth())
+                            if (ftProgressState.bytesTransferred > 0) {
+                                Text(
+                                    text = "${ftProgressState.bytesTransferred} bytes transferred",
+                                    fontSize = 11.sp,
+                                    color = Color.LightGray
+                                )
+                            }
+                            Button(
+                                onClick = onCancelTransfer,
+                                colors = ButtonDefaults.buttonColors(containerColor = Color(0xFFC92A2A)),
+                                modifier = Modifier.align(Alignment.End)
+                            ) {
+                                Text("Cancel Transfer", fontSize = 11.sp)
+                            }
+                        }
+                    }
+                    HorizontalDivider(color = Color(0xFF373A40))
+                } else if (ftProgressState.statusMessage.isNotBlank()) {
+                    Column(
+                        modifier = Modifier.fillMaxWidth(),
+                        verticalArrangement = Arrangement.spacedBy(4.dp)
+                    ) {
+                        Text(
+                            text = ftProgressState.statusMessage,
+                            fontSize = 12.sp,
+                            fontWeight = FontWeight.SemiBold,
+                            color = if (ftProgressState.isError) Color(0xFFFF6B6B) else Color(0xFF51CF66)
+                        )
+                        if (!ftProgressState.isError && isReceive && lastSavedFile?.exists() == true) {
+                            Row(
+                                modifier = Modifier.fillMaxWidth(),
+                                horizontalArrangement = Arrangement.spacedBy(6.dp)
+                            ) {
+                                OutlinedButton(
+                                    onClick = { exportToDownloads() },
+                                    contentPadding = PaddingValues(horizontal = 8.dp, vertical = 2.dp),
+                                    modifier = Modifier.weight(1f)
+                                ) {
+                                    Text("Save to Downloads 📥", fontSize = 11.sp)
+                                }
+                                OutlinedButton(
+                                    onClick = { shareDownloadedFile() },
+                                    contentPadding = PaddingValues(horizontal = 8.dp, vertical = 2.dp),
+                                    modifier = Modifier.weight(1f)
+                                ) {
+                                    Text("Share 📤", fontSize = 11.sp)
+                                }
+                            }
+                        }
+                    }
+                    HorizontalDivider(color = Color(0xFF373A40))
+                }
+
+                // Transfer Direction
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Text("Direction:", fontSize = 12.sp, fontWeight = FontWeight.SemiBold)
+                    Row {
+                        FilterChip(
+                            selected = isReceive,
+                            onClick = {
+                                isReceive = true
+                                targetSaveUri = null
+                            },
+                            label = { Text("Receive (GET)", fontSize = 11.sp) }
+                        )
+                        Spacer(modifier = Modifier.width(4.dp))
+                        FilterChip(
+                            selected = !isReceive,
+                            onClick = {
+                                isReceive = false
+                                targetSaveUri = null
+                            },
+                            label = { Text("Send (PUT)", fontSize = 11.sp) }
+                        )
+                    }
+                }
+
+                // Host File Name
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.spacedBy(6.dp)
+                ) {
+                    OutlinedTextField(
+                        value = hostFile,
+                        onValueChange = { hostFile = it },
+                        label = { Text("Host Dataset / File Name") },
+                        placeholder = { Text(if (hostType == FTConfig.HostType.TSO) "'USER.DATA'" else "PROFILE EXEC A") },
+                        singleLine = true,
+                        keyboardOptions = TerminalKeyboardOptions.copy(imeAction = ImeAction.Next),
+                        modifier = Modifier.weight(1f)
+                    )
+                    if (client != null && client.connectionState.isFullSession) {
+                        OutlinedButton(
+                            onClick = { showBrowseDialog = true },
+                            contentPadding = PaddingValues(horizontal = 8.dp, vertical = 4.dp),
+                            modifier = Modifier.padding(top = 6.dp)
+                        ) {
+                            Text("Browse...", fontSize = 11.sp)
+                        }
+                    }
+                }
+
+                // Local File Selection (SAF Document Picker integration)
+                Column(modifier = Modifier.fillMaxWidth()) {
+                    Row(
+                        modifier = Modifier.fillMaxWidth(),
+                        verticalAlignment = Alignment.CenterVertically,
+                        horizontalArrangement = Arrangement.spacedBy(6.dp)
+                    ) {
+                        OutlinedTextField(
+                            value = if (localDisplayName.isNotBlank()) localDisplayName else localFile,
+                            onValueChange = {
+                                localDisplayName = it
+                                localFile = it
+                            },
+                            label = { Text(if (isReceive) "Local Destination" else "Local File to Upload") },
+                            placeholder = { Text(if (isReceive) "download.txt" else "sample.txt") },
+                            singleLine = true,
+                            keyboardOptions = TerminalKeyboardOptions.copy(
+                                imeAction = if (!isReceive && hostType == FTConfig.HostType.TSO) ImeAction.Next else ImeAction.Done
+                            ),
+                            modifier = Modifier.weight(1f)
+                        )
+                        Button(
+                            onClick = {
+                                if (isReceive) {
+                                    val defName = if (hostFile.isNotBlank()) {
+                                        formatLocalFilenameFromHost(hostFile, hostType)
+                                    } else "download.txt"
+                                    createDocumentLauncher.launch(defName)
+                                } else {
+                                    openDocumentLauncher.launch(arrayOf("*/*"))
+                                }
+                            },
+                            colors = ButtonDefaults.buttonColors(containerColor = Color(0xFF1C7ED6)),
+                            contentPadding = PaddingValues(horizontal = 10.dp, vertical = 4.dp),
+                            modifier = Modifier.padding(top = 6.dp)
+                        ) {
+                            Text(if (isReceive) "Save As..." else "Pick File...", fontSize = 11.sp)
+                        }
+                    }
+                    Text(
+                        text = if (isReceive) "Pick a destination or enter a file name to save in app storage" else "Use 'Pick File' to select any file from Downloads / Storage",
+                        fontSize = 10.sp,
+                        color = Color.LightGray,
+                        modifier = Modifier.padding(start = 4.dp, top = 2.dp)
+                    )
+                }
+
+                // Transfer Mode
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Text("Mode:", fontSize = 12.sp, fontWeight = FontWeight.SemiBold)
+                    Row {
+                        FilterChip(
+                            selected = isAscii,
+                            onClick = { isAscii = true },
+                            label = { Text("ASCII (Text)", fontSize = 11.sp) }
+                        )
+                        Spacer(modifier = Modifier.width(4.dp))
+                        FilterChip(
+                            selected = !isAscii,
+                            onClick = { isAscii = false },
+                            label = { Text("Binary", fontSize = 11.sp) }
+                        )
+                    }
+                }
+
+                // Host Type (TSO, CMS, CICS)
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Text("Host Type:", fontSize = 12.sp, fontWeight = FontWeight.SemiBold)
+                    Row {
+                        FTConfig.HostType.values().forEach { ht ->
+                            FilterChip(
+                                selected = (hostType == ht),
+                                onClick = { hostType = ht },
+                                label = { Text(ht.name, fontSize = 11.sp) }
+                            )
+                            Spacer(modifier = Modifier.width(4.dp))
+                        }
+                    }
+                }
+
+                // TSO Send Options
+                if (!isReceive && hostType == FTConfig.HostType.TSO) {
+                    Text("TSO Dataset Allocation:", fontSize = 12.sp, fontWeight = FontWeight.Bold, color = Color.Gray)
+                    Row(
+                        modifier = Modifier.fillMaxWidth(),
+                        horizontalArrangement = Arrangement.SpaceBetween,
+                        verticalAlignment = Alignment.CenterVertically
+                    ) {
+                        Text("Record Format:", fontSize = 11.sp)
+                        Row {
+                            listOf(
+                                FTConfig.RecordFormat.DEFAULT to "Def",
+                                FTConfig.RecordFormat.FIXED to "F",
+                                FTConfig.RecordFormat.VARIABLE to "V"
+                            ).forEach { (rf, label) ->
+                                FilterChip(
+                                    selected = (recfm == rf),
+                                    onClick = { recfm = rf },
+                                    label = { Text(label, fontSize = 11.sp) }
+                                )
+                                Spacer(modifier = Modifier.width(4.dp))
+                            }
+                        }
+                    }
+
+                    Row(
+                        modifier = Modifier.fillMaxWidth(),
+                        horizontalArrangement = Arrangement.spacedBy(8.dp)
+                    ) {
+                        OutlinedTextField(
+                            value = lreclStr,
+                            onValueChange = { lreclStr = it.filter { c -> c.isDigit() } },
+                            label = { Text("LRECL", fontSize = 11.sp) },
+                            singleLine = true,
+                            keyboardOptions = TerminalKeyboardOptions.copy(imeAction = ImeAction.Next),
+                            modifier = Modifier.weight(1f)
+                        )
+                        OutlinedTextField(
+                            value = blksizeStr,
+                            onValueChange = { blksizeStr = it.filter { c -> c.isDigit() } },
+                            label = { Text("BLKSIZE", fontSize = 11.sp) },
+                            singleLine = true,
+                            keyboardOptions = TerminalKeyboardOptions.copy(imeAction = ImeAction.Next),
+                            modifier = Modifier.weight(1f)
+                        )
+                    }
+
+                    Spacer(modifier = Modifier.height(4.dp))
+                    OutlinedTextField(
+                        value = spaceStr,
+                        onValueChange = { spaceStr = it },
+                        label = { Text("SPACE (Allocation)", fontSize = 11.sp) },
+                        placeholder = { Text("e.g. (1,1) cyl or 5,2") },
+                        singleLine = true,
+                        keyboardOptions = TerminalKeyboardOptions.copy(imeAction = ImeAction.Done),
+                        modifier = Modifier.fillMaxWidth()
+                    )
+                }
+
+                // CMS Options
+                if (hostType == FTConfig.HostType.CMS) {
+                    Spacer(modifier = Modifier.height(4.dp))
+                    OutlinedTextField(
+                        value = cmsOptions,
+                        onValueChange = { cmsOptions = it },
+                        label = { Text("CMS Options", fontSize = 11.sp) },
+                        placeholder = { Text("e.g. ASCII CRLF or RECFM F LRECL 80") },
+                        singleLine = true,
+                        keyboardOptions = TerminalKeyboardOptions.copy(imeAction = ImeAction.Done),
+                        modifier = Modifier.fillMaxWidth()
+                    )
+                }
+            }
+        },
+        confirmButton = {
+            Button(
+                onClick = {
+                    val resolvedLocal = if (localFile.isNotBlank()) {
+                        localFile.trim()
+                    } else if (localDisplayName.isNotBlank()) {
+                        val tempDir = File(context.cacheDir, if (isReceive) "ft_download" else "ft_upload").apply { if (!exists()) mkdirs() }
+                        File(tempDir, localDisplayName.trim()).absolutePath
+                    } else ""
+
+                    if (hostFile.isNotBlank() && resolvedLocal.isNotBlank()) {
+                        localFile = resolvedLocal
+                        val config = FTConfig().apply {
+                            setHostFilename(hostFile.trim())
+                            setLocalFilename(resolvedLocal)
+                            setDirection(if (isReceive) FTConfig.Direction.RECEIVE else FTConfig.Direction.SEND)
+                            setTransferMode(if (isAscii) FTConfig.TransferMode.ASCII else FTConfig.TransferMode.BINARY)
+                            setHostType(hostType)
+                            setExistAction(if (overwrite) FTConfig.ExistAction.REPLACE else FTConfig.ExistAction.KEEP)
+                            if (!isReceive && hostType == FTConfig.HostType.TSO) {
+                                setRecfm(recfm)
+                                lreclStr.trim().toIntOrNull()?.let { setLrecl(it) }
+                                blksizeStr.trim().toIntOrNull()?.let { setBlksize(it) }
+                                if (spaceStr.isNotBlank()) setSpace(spaceStr.trim())
+                            }
+                            if (hostType == FTConfig.HostType.CMS && cmsOptions.isNotBlank()) {
+                                setOptions(cmsOptions.trim())
+                            }
+                        }
+                        lastTransferState = LastTransferState(
+                            hostFile = hostFile.trim(),
+                            localFile = resolvedLocal,
+                            isReceive = isReceive,
+                            isAscii = isAscii,
+                            hostType = hostType,
+                            recfm = recfm,
+                            lreclStr = lreclStr,
+                            blksizeStr = blksizeStr,
+                            spaceStr = spaceStr,
+                            cmsOptions = cmsOptions
+                        )
+                        onStartTransfer(config)
+                    }
+                },
+                enabled = hostFile.isNotBlank() && (localFile.isNotBlank() || localDisplayName.isNotBlank()) && !ftProgressState.isRunning
+            ) {
+                Text("Start Transfer")
+            }
+        },
+        dismissButton = {
+            TextButton(onClick = onDismiss) {
+                Text("Close")
+            }
+        }
+    )
+}
+
+private fun getFileNameFromUri(context: Context, uri: Uri): String {
+    var name = ""
+    try {
+        val cursor = context.contentResolver.query(uri, null, null, null, null)
+        cursor?.use {
+            if (it.moveToFirst()) {
+                val nameIndex = it.getColumnIndex(OpenableColumns.DISPLAY_NAME)
+                if (nameIndex != -1) {
+                    name = it.getString(nameIndex) ?: ""
+                }
+            }
+        }
+    } catch (_: Exception) {}
+    if (name.isBlank()) {
+        name = uri.lastPathSegment ?: "file"
+    }
+    return name
+}

src/main/java/haus/nightmare/a3270/ui/FindDialog.kt

@@ -0,0 +1,183 @@
+package haus.nightmare.a3270.ui
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.KeyboardActions
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.focus.FocusRequester
+import androidx.compose.ui.focus.focusRequester
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.ImeAction
+import androidx.compose.ui.text.input.KeyboardCapitalization
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.compose.ui.window.Dialog
+import androidx.compose.ui.window.DialogProperties
+
+@Composable
+fun FindDialog(
+    cols: Int = 80,
+    onDismiss: () -> Unit,
+    onFind: (query: String, matchCase: Boolean, forward: Boolean) -> Int,
+    onClearHighlight: () -> Unit
+) {
+    var query by remember { mutableStateOf("") }
+    var matchCase by remember { mutableStateOf(false) }
+    var forward by remember { mutableStateOf(true) }
+    var statusMessage by remember { mutableStateOf("") }
+    var isError by remember { mutableStateOf(false) }
+
+    val focusRequester = remember { FocusRequester() }
+
+    LaunchedEffect(Unit) {
+        kotlinx.coroutines.delay(100)
+        focusRequester.requestFocus()
+    }
+
+    fun doFind(searchForward: Boolean) {
+        val trimmed = query.trim()
+        if (trimmed.isEmpty()) {
+            statusMessage = "Please enter search text."
+            isError = true
+            return
+        }
+        val pos = onFind(trimmed, matchCase, searchForward)
+        if (pos >= 0) {
+            val effectiveCols = if (cols > 0) cols else 80
+            val row = (pos / effectiveCols) + 1
+            val col = (pos % effectiveCols) + 1
+            statusMessage = "Found at position $pos ($row/$col)"
+            isError = false
+        } else {
+            statusMessage = "Text not found: \"$trimmed\""
+            isError = true
+        }
+    }
+
+    Dialog(
+        onDismissRequest = onDismiss,
+        properties = DialogProperties(usePlatformDefaultWidth = false)
+    ) {
+        Card(
+            shape = RoundedCornerShape(16.dp),
+            colors = CardDefaults.cardColors(containerColor = Color(0xFF1E1E1E)),
+            modifier = Modifier
+                .fillMaxWidth(0.92f)
+                .padding(16.dp)
+        ) {
+            Column(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(20.dp),
+                verticalArrangement = Arrangement.spacedBy(10.dp)
+            ) {
+                Text(
+                    text = "Find on Screen",
+                    fontSize = 16.sp,
+                    fontWeight = FontWeight.Bold,
+                    color = Color.White
+                )
+
+                OutlinedTextField(
+                    value = query,
+                    onValueChange = {
+                        query = it
+                        if (statusMessage.isNotBlank()) statusMessage = ""
+                    },
+                    label = { Text("Find What") },
+                    singleLine = true,
+                    keyboardOptions = KeyboardOptions(
+                        capitalization = KeyboardCapitalization.None,
+                        autoCorrect = false,
+                        keyboardType = KeyboardType.Ascii,
+                        imeAction = ImeAction.Search
+                    ),
+                    keyboardActions = KeyboardActions(
+                        onSearch = { doFind(forward) }
+                    ),
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .focusRequester(focusRequester)
+                )
+
+                // Options Row
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.SpaceBetween
+                ) {
+                    Row(
+                        verticalAlignment = Alignment.CenterVertically,
+                        modifier = Modifier.clickable { matchCase = !matchCase }
+                    ) {
+                        Checkbox(
+                            checked = matchCase,
+                            onCheckedChange = { matchCase = it }
+                        )
+                        Spacer(modifier = Modifier.width(4.dp))
+                        Text("Match Case", fontSize = 12.sp, color = Color.White)
+                    }
+
+                    Row(
+                        verticalAlignment = Alignment.CenterVertically,
+                        horizontalArrangement = Arrangement.spacedBy(6.dp)
+                    ) {
+                        FilterChip(
+                            selected = forward,
+                            onClick = { forward = true },
+                            label = { Text("Down ↓", fontSize = 11.sp) }
+                        )
+                        FilterChip(
+                            selected = !forward,
+                            onClick = { forward = false },
+                            label = { Text("Up ↑", fontSize = 11.sp) }
+                        )
+                    }
+                }
+
+                if (statusMessage.isNotBlank()) {
+                    Text(
+                        text = statusMessage,
+                        fontSize = 12.sp,
+                        color = if (isError) Color(0xFFFF6B6B) else Color(0xFF51CF66)
+                    )
+                }
+
+                // Action Buttons
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.End,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    TextButton(onClick = {
+                        onClearHighlight()
+                        onDismiss()
+                    }) {
+                        Text("Close", color = Color.LightGray)
+                    }
+                    Spacer(modifier = Modifier.width(6.dp))
+                    OutlinedButton(onClick = {
+                        onClearHighlight()
+                        statusMessage = ""
+                    }) {
+                        Text("Clear")
+                    }
+                    Spacer(modifier = Modifier.width(6.dp))
+                    Button(
+                        onClick = { doFind(forward) },
+                        colors = ButtonDefaults.buttonColors(containerColor = Color(0xFF1C7ED6))
+                    ) {
+                        Text("Find Next")
+                    }
+                }
+            }
+        }
+    }
+}

src/main/java/haus/nightmare/a3270/ui/FunctionKeyBar.kt

@@ -0,0 +1,442 @@
+package haus.nightmare.a3270.ui
+
+import android.view.HapticFeedbackConstants
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.focus.focusProperties
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalView
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.activity.compose.BackHandler
+import androidx.compose.ui.window.PopupProperties
+import haus.nightmare.lib3270j.ConnectionState
+import haus.nightmare.lib3270j.protocol.DS3270Constants.*
+
+@Composable
+fun TwoRowKeyBar(
+    connectionState: ConnectionState,
+    isShiftPressed: Boolean = false,
+    isLightPenMode: Boolean = false,
+    isInsertMode: Boolean = false,
+    isDocMode: Boolean = false,
+    isWordWrap: Boolean = false,
+    isAplMode: Boolean = false,
+    fourColorOverride: Boolean = false,
+    hapticFeedbackEnabled: Boolean = true,
+    onClearShift: () -> Unit = {},
+    onConnectClick: () -> Unit,
+    onDisconnectClick: () -> Unit,
+    onFtClick: () -> Unit,
+    onFieldInspectorClick: () -> Unit = {},
+    onFindClick: () -> Unit = {},
+    onScreenExportClick: () -> Unit = {},
+    onScriptClick: () -> Unit = {},
+    onPrinterSessionClick: () -> Unit = {},
+    onToggleLightPen: () -> Unit = {},
+    onToggleInsert: () -> Unit = {},
+    onToggleDocMode: () -> Unit = {},
+    onToggleWordWrap: () -> Unit = {},
+    onToggleAplMode: () -> Unit = {},
+    onToggleFourColorOverride: () -> Unit = {},
+    onSettingsClick: () -> Unit = {},
+    onSendAid: (Int) -> Unit,
+    onReset: () -> Unit,
+    onTab: () -> Unit,
+    onBackTab: () -> Unit,
+    onEraseInput: () -> Unit = {},
+    onEraseEof: () -> Unit = {},
+    onAttn: () -> Unit = {},
+    onSysReq: () -> Unit = {},
+    onCursorSelect: () -> Unit = {},
+    onCursorLeft: () -> Unit = {},
+    onCursorUp: () -> Unit = {},
+    onCursorDown: () -> Unit = {},
+    onCursorRight: () -> Unit = {},
+    modifier: Modifier = Modifier
+) {
+    var menuExpanded by remember { mutableStateOf(false) }
+    var lastDismissTime by remember { mutableLongStateOf(0L) }
+
+    BackHandler(enabled = menuExpanded) {
+        menuExpanded = false
+    }
+
+    Column(
+        modifier = modifier
+            .fillMaxWidth()
+            .background(Color(0xFF161719))
+    ) {
+        // Row 1: System & Quick Action Keys (Static 12-key row matching Row 2 columns)
+        Row(
+            modifier = Modifier
+                .fillMaxWidth()
+                .height(35.dp)
+                .padding(horizontal = 1.dp, vertical = 1.dp),
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            // 1. Menu Dropdown Button (Connect/Disconnect/FT/Diagnostics/Tools/Settings)
+            Box(modifier = Modifier.weight(1f)) {
+                KeyButton(
+                    label = "⋮",
+                    color = Color(0xFF343A40),
+                    modifier = Modifier.fillMaxWidth(),
+                    hapticFeedbackEnabled = hapticFeedbackEnabled,
+                    innerPaddingHorizontal = 0.dp,
+                    onClick = {
+                        if (System.currentTimeMillis() - lastDismissTime > 200L) {
+                            menuExpanded = !menuExpanded
+                        }
+                    }
+                )
+                DropdownMenu(
+                    expanded = menuExpanded,
+                    onDismissRequest = {
+                        menuExpanded = false
+                        lastDismissTime = System.currentTimeMillis()
+                    },
+                    properties = PopupProperties(
+                        focusable = false,
+                        dismissOnClickOutside = true
+                    ),
+                    modifier = Modifier
+                        .background(Color(0xFF2C2D30))
+                        .heightIn(max = 420.dp)
+                ) {
+                    if (!connectionState.isConnected()) {
+                        DropdownMenuItem(
+                            text = { Text("Connect", color = Color.White, fontWeight = FontWeight.SemiBold) },
+                            onClick = {
+                                menuExpanded = false
+                                onConnectClick()
+                            }
+                        )
+                        DropdownMenuItem(
+                            text = { Text("3287 Printer Session", color = Color.White) },
+                            onClick = {
+                                menuExpanded = false
+                                onPrinterSessionClick()
+                            }
+                        )
+                    } else {
+                        DropdownMenuItem(
+                            text = { Text("Disconnect", color = Color(0xFFFF6B6B), fontWeight = FontWeight.SemiBold) },
+                            onClick = {
+                                menuExpanded = false
+                                onDisconnectClick()
+                            }
+                        )
+                        HorizontalDivider(color = Color(0xFF3E4044))
+                        DropdownMenuItem(
+                            text = { Text("Find on Screen", color = Color.White) },
+                            onClick = {
+                                menuExpanded = false
+                                onFindClick()
+                            }
+                        )
+                        DropdownMenuItem(
+                            text = { Text("Field Inspector", color = Color.White) },
+                            onClick = {
+                                menuExpanded = false
+                                onFieldInspectorClick()
+                            }
+                        )
+                        DropdownMenuItem(
+                            text = { Text("File Transfer (IND\$FILE)", color = Color.White) },
+                            onClick = {
+                                menuExpanded = false
+                                onFtClick()
+                            }
+                        )
+                        DropdownMenuItem(
+                            text = { Text("Save / Share Screen", color = Color.White) },
+                            onClick = {
+                                menuExpanded = false
+                                onScreenExportClick()
+                            }
+                        )
+                        DropdownMenuItem(
+                            text = { Text("Run Keystroke Script", color = Color.White) },
+                            onClick = {
+                                menuExpanded = false
+                                onScriptClick()
+                            }
+                        )
+                        DropdownMenuItem(
+                            text = { Text("3287 Printer Session", color = Color.White) },
+                            onClick = {
+                                menuExpanded = false
+                                onPrinterSessionClick()
+                            }
+                        )
+                        HorizontalDivider(color = Color(0xFF3E4044))
+                        DropdownMenuItem(
+                            text = { Text("Attention (Attn)", color = Color.LightGray) },
+                            onClick = {
+                                menuExpanded = false
+                                onAttn()
+                            }
+                        )
+                        DropdownMenuItem(
+                            text = { Text("System Request (SysReq)", color = Color.LightGray) },
+                            onClick = {
+                                menuExpanded = false
+                                onSysReq()
+                            }
+                        )
+                        DropdownMenuItem(
+                            text = { Text("Erase Input (ErInp)", color = Color.LightGray) },
+                            onClick = {
+                                menuExpanded = false
+                                onEraseInput()
+                            }
+                        )
+                        DropdownMenuItem(
+                            text = { Text("Cursor Select (CurSel)", color = Color.LightGray) },
+                            onClick = {
+                                menuExpanded = false
+                                onCursorSelect()
+                            }
+                        )
+                        HorizontalDivider(color = Color(0xFF3E4044))
+                        DropdownMenuItem(
+                            text = { Text("Insert Mode: ${if (isInsertMode) "ON" else "OFF"}", color = if (isInsertMode) Color(0xFF7890F0) else Color.White) },
+                            onClick = {
+                                menuExpanded = false
+                                onToggleInsert()
+                            }
+                        )
+                        DropdownMenuItem(
+                            text = { Text("Document Mode (DOC): ${if (isDocMode) "ON" else "OFF"}", color = if (isDocMode) Color(0xFF38D9A9) else Color.White) },
+                            onClick = {
+                                menuExpanded = false
+                                onToggleDocMode()
+                            }
+                        )
+                        DropdownMenuItem(
+                            text = { Text("Word Wrap: ${if (isWordWrap) "ON" else "OFF"}", color = if (isWordWrap) Color(0xFF38D9A9) else Color.White) },
+                            onClick = {
+                                menuExpanded = false
+                                onToggleWordWrap()
+                            }
+                        )
+                        DropdownMenuItem(
+                            text = { Text("APL Keyboard Mode: ${if (isAplMode) "ON" else "OFF"}", color = if (isAplMode) Color(0xFFFFA94D) else Color.White) },
+                            onClick = {
+                                menuExpanded = false
+                                onToggleAplMode()
+                            }
+                        )
+                        DropdownMenuItem(
+                            text = { Text("Base 4-Color Override: ${if (fourColorOverride) "ON" else "OFF"}", color = if (fourColorOverride) Color(0xFFFFD43B) else Color.White) },
+                            onClick = {
+                                menuExpanded = false
+                                onToggleFourColorOverride()
+                            }
+                        )
+                        HorizontalDivider(color = Color(0xFF3E4044))
+                    }
+                    DropdownMenuItem(
+                        text = {
+                            Text(
+                                text = if (isLightPenMode) "Light Pen: ON" else "Light Pen: OFF",
+                                color = if (isLightPenMode) Color(0xFFFFFF50) else Color.White,
+                                fontWeight = FontWeight.SemiBold
+                            )
+                        },
+                        onClick = {
+                            menuExpanded = false
+                            onToggleLightPen()
+                        }
+                    )
+                    DropdownMenuItem(
+                        text = { Text("Settings", color = Color.White, fontWeight = FontWeight.SemiBold) },
+                        onClick = {
+                            menuExpanded = false
+                            onSettingsClick()
+                        }
+                    )
+                }
+            }
+
+            // 2. TAB / BTAB depending on Shift state
+            val tabLabel = if (isShiftPressed) "BTAB" else "TAB"
+            KeyButton(
+                label = tabLabel,
+                color = Color(0xFF1C7ED6),
+                modifier = Modifier.weight(1f),
+                hapticFeedbackEnabled = hapticFeedbackEnabled,
+                innerPaddingHorizontal = 0.dp,
+                onClick = {
+                    if (isShiftPressed) {
+                        onBackTab()
+                        onClearShift()
+                    } else {
+                        onTab()
+                    }
+                }
+            )
+
+            // 3. RESET / ERASE (Erase Input) depending on Shift state
+            val resetLabel = if (isShiftPressed) "ERASE" else "RESET"
+            KeyButton(
+                label = resetLabel,
+                color = Color(0xFFE67700),
+                modifier = Modifier.weight(1f),
+                hapticFeedbackEnabled = hapticFeedbackEnabled,
+                innerPaddingHorizontal = 0.dp,
+                onClick = {
+                    if (isShiftPressed) {
+                        onEraseInput()
+                        onClearShift()
+                    } else {
+                        onReset()
+                    }
+                }
+            )
+
+            // 4. ENTER / EOF (Erase EOF) depending on Shift state
+            val enterLabel = if (isShiftPressed) "EOF" else "ENTER"
+            KeyButton(
+                label = enterLabel,
+                color = Color(0xFF2B8A3E),
+                modifier = Modifier.weight(1f),
+                hapticFeedbackEnabled = hapticFeedbackEnabled,
+                innerPaddingHorizontal = 0.dp,
+                onClick = {
+                    if (isShiftPressed) {
+                        onEraseEof()
+                        onClearShift()
+                    } else {
+                        onSendAid(AID_ENTER)
+                    }
+                }
+            )
+
+            // 5. CLEAR / ATTN (Attention) depending on Shift state
+            val clearLabel = if (isShiftPressed) "ATTN" else "CLEAR"
+            KeyButton(
+                label = clearLabel,
+                color = Color(0xFFC92A2A),
+                modifier = Modifier.weight(1f),
+                hapticFeedbackEnabled = hapticFeedbackEnabled,
+                innerPaddingHorizontal = 0.dp,
+                onClick = {
+                    if (isShiftPressed) {
+                        onAttn()
+                        onClearShift()
+                    } else {
+                        onSendAid(AID_CLEAR)
+                    }
+                }
+            )
+
+            // 6. PA1
+            KeyButton("PA1", Color(0xFF495057), modifier = Modifier.weight(1f), hapticFeedbackEnabled = hapticFeedbackEnabled, innerPaddingHorizontal = 0.dp, onClick = { onSendAid(AID_PA1) })
+
+            // 7. PA2
+            KeyButton("PA2", Color(0xFF495057), modifier = Modifier.weight(1f), hapticFeedbackEnabled = hapticFeedbackEnabled, innerPaddingHorizontal = 0.dp, onClick = { onSendAid(AID_PA2) })
+
+            // 8. PA3
+            KeyButton("PA3", Color(0xFF495057), modifier = Modifier.weight(1f), hapticFeedbackEnabled = hapticFeedbackEnabled, innerPaddingHorizontal = 0.dp, onClick = { onSendAid(AID_PA3) })
+
+            // 9. Left Navigation
+            KeyButton("←", Color(0xFF343A40), modifier = Modifier.weight(1f), hapticFeedbackEnabled = hapticFeedbackEnabled, innerPaddingHorizontal = 0.dp, onClick = onCursorLeft)
+
+            // 10. Up Navigation
+            KeyButton("↑", Color(0xFF343A40), modifier = Modifier.weight(1f), hapticFeedbackEnabled = hapticFeedbackEnabled, innerPaddingHorizontal = 0.dp, onClick = onCursorUp)
+
+            // 11. Down Navigation
+            KeyButton("↓", Color(0xFF343A40), modifier = Modifier.weight(1f), hapticFeedbackEnabled = hapticFeedbackEnabled, innerPaddingHorizontal = 0.dp, onClick = onCursorDown)
+
+            // 12. Right Navigation
+            KeyButton("→", Color(0xFF343A40), modifier = Modifier.weight(1f), hapticFeedbackEnabled = hapticFeedbackEnabled, innerPaddingHorizontal = 0.dp, onClick = onCursorRight)
+        }
+
+        Spacer(modifier = Modifier.height(1.dp).fillMaxWidth().background(Color(0xFF2C2D30)))
+
+        // Row 2: PF Keys (F1-F12 when Shift is off; F13-F24 when Shift is down) - Non-scrolling, full width
+        Row(
+            modifier = Modifier
+                .fillMaxWidth()
+                .height(35.dp)
+                .padding(horizontal = 1.dp, vertical = 1.dp),
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            val pfAids = intArrayOf(
+                AID_PF1, AID_PF2, AID_PF3, AID_PF4, AID_PF5, AID_PF6,
+                AID_PF7, AID_PF8, AID_PF9, AID_PF10, AID_PF11, AID_PF12,
+                AID_PF13, AID_PF14, AID_PF15, AID_PF16, AID_PF17, AID_PF18,
+                AID_PF19, AID_PF20, AID_PF21, AID_PF22, AID_PF23, AID_PF24
+            )
+
+            val startPf = if (isShiftPressed) 13 else 1
+            val endPf = if (isShiftPressed) 24 else 12
+
+            for (i in startPf..endPf) {
+                val aid = pfAids[i - 1]
+                KeyButton(
+                    label = "F$i",
+                    color = Color(0xFF364FC7),
+                    modifier = Modifier.weight(1f),
+                    hapticFeedbackEnabled = hapticFeedbackEnabled,
+                    innerPaddingHorizontal = 0.dp,
+                    onClick = {
+                        onSendAid(aid)
+                        if (isShiftPressed) {
+                            onClearShift()
+                        }
+                    }
+                )
+            }
+        }
+    }
+}
+
+@Composable
+private fun KeyButton(
+    label: String,
+    color: Color,
+    onClick: () -> Unit,
+    modifier: Modifier = Modifier,
+    hapticFeedbackEnabled: Boolean = true,
+    innerPaddingHorizontal: androidx.compose.ui.unit.Dp = 0.dp
+) {
+    val view = LocalView.current
+    Surface(
+        onClick = {
+            if (hapticFeedbackEnabled) {
+                view.performHapticFeedback(HapticFeedbackConstants.KEYBOARD_TAP)
+            }
+            onClick()
+        },
+        shape = RoundedCornerShape(4.dp),
+        color = color,
+        shadowElevation = 1.dp,
+        modifier = modifier
+            .padding(horizontal = 1.dp, vertical = 1.dp)
+            .height(31.dp)
+            .focusProperties { canFocus = false }
+    ) {
+        Box(
+            contentAlignment = Alignment.Center,
+            modifier = Modifier.padding(horizontal = innerPaddingHorizontal)
+        ) {
+            Text(
+                text = label,
+                color = Color.White,
+                fontSize = 10.sp,
+                fontFamily = FontFamily.Monospace,
+                fontWeight = FontWeight.Bold,
+                maxLines = 1
+            )
+        }
+    }
+}

src/main/java/haus/nightmare/a3270/ui/HostDirectoryDialog.kt

@@ -0,0 +1,310 @@
+package haus.nightmare.a3270.ui
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.horizontalScroll
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.itemsIndexed
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.KeyboardActions
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.ImeAction
+import androidx.compose.ui.text.input.KeyboardCapitalization
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.compose.ui.window.Dialog
+import androidx.compose.ui.window.DialogProperties
+import haus.nightmare.lib3270j.Telnet3270Client
+import haus.nightmare.lib3270j.ft.FTConfig
+import haus.nightmare.lib3270j.ft.dir.CMSDirectoryEntry
+import haus.nightmare.lib3270j.ft.dir.HostDirectoryEntry
+import haus.nightmare.lib3270j.ft.dir.TSODirectoryEntry
+
+@Composable
+fun HostDirectoryDialog(
+    client: Telnet3270Client?,
+    initialHostType: FTConfig.HostType = FTConfig.HostType.TSO,
+    initialQuery: String = "",
+    onDismiss: () -> Unit,
+    onSelectDataset: (String) -> Unit
+) {
+    var hostType by remember { mutableStateOf(initialHostType) }
+    var query by remember { mutableStateOf(initialQuery) }
+    var entries by remember { mutableStateOf<List<HostDirectoryEntry>>(emptyList()) }
+    var selectedIndex by remember { mutableIntStateOf(-1) }
+    var statusMessage by remember { mutableStateOf("") }
+
+    fun runQuery() {
+        val c = client
+        if (c == null || !c.connectionState.isFullSession) {
+            statusMessage = "Terminal not connected."
+            return
+        }
+        val xfer = c.xfer
+        if (xfer == null) {
+            statusMessage = "ECL transfer interface not available."
+            return
+        }
+
+        val q = query.trim()
+        if (hostType == FTConfig.HostType.CMS) {
+            val list = xfer.getCmsDirectory(q)
+            entries = list ?: emptyList()
+        } else {
+            val list = xfer.getTsoDirectory(q)
+            entries = list ?: emptyList()
+        }
+        selectedIndex = -1
+        statusMessage = "${entries.size} entries found."
+    }
+
+    fun parseScreen() {
+        val c = client
+        if (c == null || !c.connectionState.isFullSession) {
+            statusMessage = "No active screen to parse."
+            return
+        }
+        val xfer = c.xfer
+        if (xfer == null) {
+            statusMessage = "ECL transfer interface not available."
+            return
+        }
+
+        val ps = c.ps
+        val screenText = ps.getString(0, ps.size)
+        if (hostType == FTConfig.HostType.CMS) {
+            val list = xfer.getCmsDirectory(screenText)
+            entries = list ?: emptyList()
+        } else {
+            val list = xfer.getTsoDirectory(screenText)
+            entries = list ?: emptyList()
+        }
+        selectedIndex = -1
+        statusMessage = "Parsed ${entries.size} entries from screen."
+    }
+
+    LaunchedEffect(Unit) {
+        if (initialQuery.isNotBlank()) {
+            runQuery()
+        } else {
+            parseScreen()
+        }
+    }
+
+    Dialog(
+        onDismissRequest = onDismiss,
+        properties = DialogProperties(usePlatformDefaultWidth = false)
+    ) {
+        Card(
+            shape = RoundedCornerShape(16.dp),
+            colors = CardDefaults.cardColors(containerColor = Color(0xFF1E1E1E)),
+            modifier = Modifier
+                .fillMaxWidth(0.95f)
+                .heightIn(max = 680.dp)
+                .padding(vertical = 16.dp)
+        ) {
+            Column(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(16.dp),
+                verticalArrangement = Arrangement.spacedBy(8.dp)
+            ) {
+                // Header & Query Bar
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Text(
+                        "Host Catalog & Directory Browser",
+                        fontWeight = FontWeight.Bold,
+                        fontSize = 15.sp,
+                        color = Color.White
+                    )
+                    Row {
+                        FilterChip(
+                            selected = (hostType == FTConfig.HostType.TSO),
+                            onClick = { hostType = FTConfig.HostType.TSO },
+                            label = { Text("TSO", fontSize = 11.sp) }
+                        )
+                        Spacer(modifier = Modifier.width(4.dp))
+                        FilterChip(
+                            selected = (hostType == FTConfig.HostType.CMS),
+                            onClick = { hostType = FTConfig.HostType.CMS },
+                            label = { Text("CMS", fontSize = 11.sp) }
+                        )
+                    }
+                }
+
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.spacedBy(6.dp),
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    OutlinedTextField(
+                        value = query,
+                        onValueChange = { query = it },
+                        label = { Text("Query Pattern") },
+                        placeholder = { Text(if (hostType == FTConfig.HostType.TSO) "USER.*" else "* EXEC *") },
+                        singleLine = true,
+                        keyboardOptions = KeyboardOptions(
+                            capitalization = KeyboardCapitalization.None,
+                            autoCorrect = false,
+                            keyboardType = KeyboardType.Ascii,
+                            imeAction = ImeAction.Search
+                        ),
+                        keyboardActions = KeyboardActions(onSearch = { runQuery() }),
+                        modifier = Modifier.weight(1f)
+                    )
+                    Button(
+                        onClick = { runQuery() },
+                        colors = ButtonDefaults.buttonColors(containerColor = Color(0xFF1C7ED6))
+                    ) {
+                        Text("Query")
+                    }
+                }
+
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Text(
+                        text = statusMessage.ifBlank { "Enter query or parse screen." },
+                        fontSize = 11.sp,
+                        color = Color.Gray
+                    )
+                    TextButton(onClick = { parseScreen() }) {
+                        Text("Parse Screen", fontSize = 11.sp, color = Color(0xFF51CF66))
+                    }
+                }
+
+                HorizontalDivider(color = Color(0xFF2C2D30))
+
+                // Table View
+                if (entries.isEmpty()) {
+                    Box(
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .weight(1f),
+                        contentAlignment = Alignment.Center
+                    ) {
+                        Text("No entries found.", color = Color.Gray, fontSize = 12.sp)
+                    }
+                } else {
+                    val horizScroll = rememberScrollState()
+
+                    Column(
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .weight(1f)
+                            .horizontalScroll(horizScroll)
+                    ) {
+                        // Header Row
+                        Row(
+                            modifier = Modifier
+                                .background(Color(0xFF25262B))
+                                .padding(vertical = 6.dp, horizontal = 4.dp),
+                            verticalAlignment = Alignment.CenterVertically
+                        ) {
+                            if (hostType == FTConfig.HostType.CMS) {
+                                Text("Filename", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(90.dp))
+                                Text("Filetype", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(80.dp))
+                                Text("Fm", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(36.dp), textAlign = TextAlign.Center)
+                                Text("Fmt", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(36.dp), textAlign = TextAlign.Center)
+                                Text("Lrecl", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(50.dp), textAlign = TextAlign.Center)
+                                Text("Records", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(60.dp), textAlign = TextAlign.Center)
+                                Text("Date / Time", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(140.dp))
+                            } else {
+                                Text("Dataset Name", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(220.dp))
+                                Text("Volume", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(70.dp))
+                                Text("Recfm", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(44.dp), textAlign = TextAlign.Center)
+                                Text("Lrecl", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(50.dp), textAlign = TextAlign.Center)
+                                Text("Blksize", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(60.dp), textAlign = TextAlign.Center)
+                                Text("Tracks", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(50.dp), textAlign = TextAlign.Center)
+                                Text("Ext", color = Color.LightGray, fontSize = 11.sp, fontWeight = FontWeight.Bold, modifier = Modifier.width(36.dp), textAlign = TextAlign.Center)
+                            }
+                        }
+
+                        // Entry Rows
+                        LazyColumn(
+                            modifier = Modifier.fillMaxSize(),
+                            verticalArrangement = Arrangement.spacedBy(2.dp)
+                        ) {
+                            itemsIndexed(entries) { idx, item ->
+                                val isSelected = (idx == selectedIndex)
+
+                                Surface(
+                                    shape = RoundedCornerShape(4.dp),
+                                    color = if (isSelected) Color(0xFF1C7ED6).copy(alpha = 0.35f) else if (idx % 2 == 0) Color(0xFF161719) else Color(0xFF1E1F23),
+                                    modifier = Modifier
+                                        .fillMaxWidth()
+                                        .clickable { selectedIndex = idx }
+                                ) {
+                                    Row(
+                                        modifier = Modifier.padding(vertical = 5.dp, horizontal = 4.dp),
+                                        verticalAlignment = Alignment.CenterVertically
+                                    ) {
+                                        if (item is CMSDirectoryEntry) {
+                                            Text(item.filename, color = Color.White, fontSize = 11.sp, fontFamily = FontFamily.Monospace, modifier = Modifier.width(90.dp))
+                                            Text(item.filetype, color = Color.Cyan, fontSize = 11.sp, fontFamily = FontFamily.Monospace, modifier = Modifier.width(80.dp))
+                                            Text(item.filemode, color = Color.LightGray, fontSize = 11.sp, modifier = Modifier.width(36.dp), textAlign = TextAlign.Center)
+                                            Text(item.recfm, color = Color.LightGray, fontSize = 11.sp, modifier = Modifier.width(36.dp), textAlign = TextAlign.Center)
+                                            Text("${item.lrecl}", color = Color.LightGray, fontSize = 11.sp, modifier = Modifier.width(50.dp), textAlign = TextAlign.Center)
+                                            Text("${item.numRecords}", color = Color.LightGray, fontSize = 11.sp, modifier = Modifier.width(60.dp), textAlign = TextAlign.Center)
+                                            Text("${item.date} ${item.time}", color = Color.Gray, fontSize = 10.sp, modifier = Modifier.width(140.dp))
+                                        } else if (item is TSODirectoryEntry) {
+                                            Text(item.datasetName, color = Color.White, fontSize = 11.sp, fontFamily = FontFamily.Monospace, modifier = Modifier.width(220.dp))
+                                            Text(item.volume, color = Color.Cyan, fontSize = 11.sp, modifier = Modifier.width(70.dp))
+                                            Text(item.recfm, color = Color.LightGray, fontSize = 11.sp, modifier = Modifier.width(44.dp), textAlign = TextAlign.Center)
+                                            Text("${item.lrecl}", color = Color.LightGray, fontSize = 11.sp, modifier = Modifier.width(50.dp), textAlign = TextAlign.Center)
+                                            Text("${item.blksize}", color = Color.LightGray, fontSize = 11.sp, modifier = Modifier.width(60.dp), textAlign = TextAlign.Center)
+                                            Text("${item.tracksAllocated}", color = Color.LightGray, fontSize = 11.sp, modifier = Modifier.width(50.dp), textAlign = TextAlign.Center)
+                                            Text("${item.extents}", color = Color.LightGray, fontSize = 11.sp, modifier = Modifier.width(36.dp), textAlign = TextAlign.Center)
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+
+                // Bottom Action Buttons
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.End,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    TextButton(onClick = onDismiss) {
+                        Text("Cancel", color = Color.LightGray)
+                    }
+                    Spacer(modifier = Modifier.width(6.dp))
+                    Button(
+                        onClick = {
+                            if (selectedIndex in entries.indices) {
+                                val selectedName = entries[selectedIndex].name
+                                onSelectDataset(selectedName)
+                                onDismiss()
+                            }
+                        },
+                        enabled = selectedIndex in entries.indices,
+                        colors = ButtonDefaults.buttonColors(containerColor = Color(0xFF2B8A3E))
+                    ) {
+                        Text("Select Dataset")
+                    }
+                }
+            }
+        }
+    }
+}

src/main/java/haus/nightmare/a3270/ui/OiaStatusBar.kt

@@ -0,0 +1,336 @@
+package haus.nightmare.a3270.ui
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import haus.nightmare.lib3270j.ConnectionState
+
+@Composable
+fun OiaStatusBar(
+    connectionState: ConnectionState,
+    currentHost: String,
+    isKeyboardLocked: Boolean,
+    oiaText: String,
+    cursorAddr: Int,
+    rows: Int,
+    cols: Int,
+    isTls: Boolean = false,
+    isTlsVerified: Boolean = true,
+    graphicsMode: String = "NONE",
+    isLightPenMode: Boolean = false,
+    isInsertMode: Boolean = false,
+    isDocMode: Boolean = false,
+    isWordWrap: Boolean = false,
+    isAplMode: Boolean = false,
+    onToggleInsert: (() -> Unit)? = null,
+    onToggleDocMode: (() -> Unit)? = null,
+    onToggleWordWrap: (() -> Unit)? = null,
+    onToggleAplMode: (() -> Unit)? = null,
+    inhibitReason: Int = 0,
+    luName: String = "",
+    isNumericField: Boolean = false,
+    uiTheme: String = "DARK",
+    modifier: Modifier = Modifier
+) {
+    val isLight = uiTheme.equals("LIGHT", ignoreCase = true)
+    val barBg = if (isLight) Color(0xFFE9ECEF) else Color(0xFF161719)
+    val defaultTextClr = if (isLight) Color(0xFF212529) else Color.White
+    val sysAvailClr = if (isLight) Color(0xFF005AC8) else Color(0xFF7890F0)
+    val inputInhibitedClr = if (isLight) Color(0xFF141414) else Color(0xFFFFFFFF)
+    val attentionClr = if (isLight) Color(0xFFB46400) else Color(0xFFFFFF00)
+    val commCheckClr = if (isLight) Color(0xFFBE1414) else Color(0xFFFF0000)
+
+    val row = if (cols > 0 && rows > 0) ((cursorAddr / cols) % rows) + 1 else 1
+    val col = if (cols > 0) (cursorAddr % cols) + 1 else 1
+    val posStr = String.format("%03d/%03d [%04d]", row, col, cursorAddr)
+
+    val hostText = if (currentHost.isNotBlank()) currentHost else oiaText
+
+    val connTypeBadge = when (connectionState) {
+        ConnectionState.CONNECTED_3270 -> "TN3270"
+        ConnectionState.CONNECTED_TN3270E -> "TN3270E"
+        ConnectionState.CONNECTED_SSCP -> "SSCP-LU"
+        ConnectionState.CONNECTED_NVT, ConnectionState.CONNECTED_NVT_CHAR, ConnectionState.CONNECTED_E_NVT -> "NVT"
+        ConnectionState.CONNECTED_UNBOUND -> "UNBOUND"
+        ConnectionState.TCP_PENDING, ConnectionState.TELNET_PENDING -> "CONNECTING"
+        ConnectionState.NOT_CONNECTED -> "OFFLINE"
+        else -> connectionState.name
+    }
+
+    val (lockStatusText, lockStatusColor) = if (!connectionState.isConnected()) {
+        "OFFLINE" to Color(0xFF868E96)
+    } else if (inhibitReason != 0) {
+        val txt = when (inhibitReason) {
+            haus.nightmare.lib3270j.ecl.ECLConstants.INHIBIT_SYSTEM_LOCK -> "X SYSTEM"
+            haus.nightmare.lib3270j.ecl.ECLConstants.INHIBIT_COMM_CHECK -> "X COMM"
+            haus.nightmare.lib3270j.ecl.ECLConstants.INHIBIT_NUMERIC_ONLY -> "X NUM"
+            haus.nightmare.lib3270j.ecl.ECLConstants.INHIBIT_PROTECTED_FIELD -> "X PROT"
+            haus.nightmare.lib3270j.ecl.ECLConstants.INHIBIT_OVERFLOW -> "X >"
+            haus.nightmare.lib3270j.ecl.ECLConstants.INHIBIT_OPERATOR_DUE -> "X OP"
+            else -> "X LOCKED"
+        }
+        val clr = when (inhibitReason) {
+            haus.nightmare.lib3270j.ecl.ECLConstants.INHIBIT_COMM_CHECK -> commCheckClr
+            haus.nightmare.lib3270j.ecl.ECLConstants.INHIBIT_OPERATOR_DUE -> attentionClr
+            haus.nightmare.lib3270j.ecl.ECLConstants.INHIBIT_NUMERIC_ONLY -> attentionClr
+            haus.nightmare.lib3270j.ecl.ECLConstants.INHIBIT_OVERFLOW -> attentionClr
+            else -> inputInhibitedClr
+        }
+        txt to clr
+    } else if (isKeyboardLocked) {
+        "X SYSTEM" to inputInhibitedClr
+    } else {
+        "READY" to sysAvailClr
+    }
+
+    Row(
+        modifier = modifier
+            .fillMaxWidth()
+            .height(26.dp)
+            .background(barBg)
+            .padding(horizontal = 8.dp),
+        verticalAlignment = Alignment.CenterVertically,
+        horizontalArrangement = Arrangement.SpaceBetween
+    ) {
+        // Connected Host & Status Indicator
+        Row(
+            verticalAlignment = Alignment.CenterVertically,
+            modifier = Modifier.weight(1f)
+        ) {
+            Box(
+                modifier = Modifier
+                    .size(8.dp)
+                    .background(if (connectionState.isConnected()) Color(0xFF7890F0) else Color(0xFF868E96))
+            )
+            Spacer(modifier = Modifier.width(6.dp))
+            Text(
+                text = hostText,
+                color = defaultTextClr,
+                fontSize = 11.sp,
+                fontFamily = FontFamily.Monospace,
+                fontWeight = FontWeight.Bold,
+                maxLines = 1
+            )
+
+            // TLS Badge
+            if (connectionState.isConnected() && isTls) {
+                Spacer(modifier = Modifier.width(6.dp))
+                Surface(
+                    color = if (isTlsVerified) Color(0xFF51CF66).copy(alpha = 0.2f) else Color(0xFFFFB450).copy(alpha = 0.2f),
+                    shape = RoundedCornerShape(4.dp)
+                ) {
+                    Text(
+                        text = if (isTlsVerified) "🔒 TLS" else "🔓 TLS",
+                        color = if (isTlsVerified) Color(0xFF51CF66) else Color(0xFFFFB450),
+                        fontSize = 9.sp,
+                        fontFamily = FontFamily.Monospace,
+                        fontWeight = FontWeight.Bold,
+                        modifier = Modifier.padding(horizontal = 4.dp, vertical = 1.dp)
+                    )
+                }
+            }
+
+            // GFX Mode Badge
+            if (connectionState.isConnected() && graphicsMode != "NONE" && graphicsMode.isNotBlank()) {
+                Spacer(modifier = Modifier.width(6.dp))
+                Surface(
+                    color = Color(0xFF22B8CF).copy(alpha = 0.2f),
+                    shape = RoundedCornerShape(4.dp)
+                ) {
+                    Text(
+                        text = when (graphicsMode) {
+                            "VECTOR_GRAPHICS" -> "GOCA"
+                            "PROGRAMMED_SYMBOLS" -> "PS"
+                            else -> "GFX"
+                        },
+                        color = Color(0xFF22B8CF),
+                        fontSize = 9.sp,
+                        fontFamily = FontFamily.Monospace,
+                        fontWeight = FontWeight.Bold,
+                        modifier = Modifier.padding(horizontal = 4.dp, vertical = 1.dp)
+                    )
+                }
+            }
+
+            // Field Status: NUM vs ALPHA
+            if (connectionState.isConnected() && rows > 0 && cols > 0) {
+                Spacer(modifier = Modifier.width(6.dp))
+                Surface(
+                    color = Color(0xFF339AF0).copy(alpha = 0.2f),
+                    shape = RoundedCornerShape(4.dp)
+                ) {
+                    Text(
+                        text = if (isNumericField) "NUM" else "ALPHA",
+                        color = if (isNumericField) Color(0xFFFFD43B) else Color(0xFF74C0FC),
+                        fontSize = 9.sp,
+                        fontFamily = FontFamily.Monospace,
+                        fontWeight = FontWeight.Bold,
+                        modifier = Modifier.padding(horizontal = 4.dp, vertical = 1.dp)
+                    )
+                }
+            }
+
+            // Light Pen Badge
+            if (isLightPenMode) {
+                Spacer(modifier = Modifier.width(6.dp))
+                Surface(
+                    color = Color(0xFFFFFF50).copy(alpha = 0.25f),
+                    shape = RoundedCornerShape(4.dp)
+                ) {
+                    Text(
+                        text = "LP",
+                        color = Color(0xFFFFFF50),
+                        fontSize = 9.sp,
+                        fontFamily = FontFamily.Monospace,
+                        fontWeight = FontWeight.Bold,
+                        modifier = Modifier.padding(horizontal = 4.dp, vertical = 1.dp)
+                    )
+                }
+            }
+
+            // Connection Type Badge (TN3270, TN3270E, SSCP, NVT)
+            if (connectionState.isConnected()) {
+                Spacer(modifier = Modifier.width(6.dp))
+                Surface(
+                    color = Color(0xFF7950F2).copy(alpha = 0.25f),
+                    shape = RoundedCornerShape(4.dp)
+                ) {
+                    Text(
+                        text = connTypeBadge,
+                        color = Color(0xFFB197FC),
+                        fontSize = 9.sp,
+                        fontFamily = FontFamily.Monospace,
+                        fontWeight = FontWeight.Bold,
+                        modifier = Modifier.padding(horizontal = 4.dp, vertical = 1.dp)
+                    )
+                }
+            }
+
+            // LU Name Badge
+            if (connectionState.isConnected() && luName.isNotBlank()) {
+                Spacer(modifier = Modifier.width(6.dp))
+                Surface(
+                    color = Color(0xFF40C057).copy(alpha = 0.2f),
+                    shape = RoundedCornerShape(4.dp)
+                ) {
+                    Text(
+                        text = "LU:$luName",
+                        color = Color(0xFF69DB7C),
+                        fontSize = 9.sp,
+                        fontFamily = FontFamily.Monospace,
+                        fontWeight = FontWeight.Bold,
+                        modifier = Modifier.padding(horizontal = 4.dp, vertical = 1.dp)
+                    )
+                }
+            }
+        }
+
+        // Operational Mode Badges (^ INS, APL, DOC, V)
+        Row(
+            verticalAlignment = Alignment.CenterVertically,
+            horizontalArrangement = Arrangement.spacedBy(4.dp),
+            modifier = Modifier.padding(horizontal = 2.dp)
+        ) {
+            if (connectionState.isConnected() && isInsertMode) {
+                Surface(
+                    color = Color(0xFF7890F0).copy(alpha = 0.2f),
+                    shape = RoundedCornerShape(4.dp),
+                    modifier = Modifier.then(if (onToggleInsert != null) Modifier.clickable { onToggleInsert() } else Modifier)
+                ) {
+                    Text(
+                        text = "^ INS",
+                        color = Color(0xFF7890F0),
+                        fontSize = 10.sp,
+                        fontFamily = FontFamily.Monospace,
+                        fontWeight = FontWeight.Bold,
+                        modifier = Modifier.padding(horizontal = 4.dp, vertical = 2.dp)
+                    )
+                }
+            }
+            if (connectionState.isConnected() && isAplMode) {
+                Surface(
+                    color = Color(0xFFFF922B).copy(alpha = 0.2f),
+                    shape = RoundedCornerShape(4.dp),
+                    modifier = Modifier.then(if (onToggleAplMode != null) Modifier.clickable { onToggleAplMode() } else Modifier)
+                ) {
+                    Text(
+                        text = "APL",
+                        color = Color(0xFFFFA94D),
+                        fontSize = 10.sp,
+                        fontFamily = FontFamily.Monospace,
+                        fontWeight = FontWeight.Bold,
+                        modifier = Modifier.padding(horizontal = 4.dp, vertical = 2.dp)
+                    )
+                }
+            }
+            if (connectionState.isConnected() && isDocMode) {
+                Surface(
+                    color = Color(0xFF20C997).copy(alpha = 0.2f),
+                    shape = RoundedCornerShape(4.dp),
+                    modifier = Modifier.then(if (onToggleDocMode != null) Modifier.clickable { onToggleDocMode() } else Modifier)
+                ) {
+                    Text(
+                        text = "DOC",
+                        color = Color(0xFF38D9A9),
+                        fontSize = 10.sp,
+                        fontFamily = FontFamily.Monospace,
+                        fontWeight = FontWeight.Bold,
+                        modifier = Modifier.padding(horizontal = 4.dp, vertical = 2.dp)
+                    )
+                }
+            }
+            if (connectionState.isConnected() && isWordWrap) {
+                Surface(
+                    color = Color(0xFF20C997).copy(alpha = 0.2f),
+                    shape = RoundedCornerShape(4.dp),
+                    modifier = Modifier.then(if (onToggleWordWrap != null) Modifier.clickable { onToggleWordWrap() } else Modifier)
+                ) {
+                    Text(
+                        text = "V",
+                        color = Color(0xFF38D9A9),
+                        fontSize = 10.sp,
+                        fontFamily = FontFamily.Monospace,
+                        fontWeight = FontWeight.Bold,
+                        modifier = Modifier.padding(horizontal = 4.dp, vertical = 2.dp)
+                    )
+                }
+            }
+        }
+
+        // Terminal Keyboard Lock Status Badge (X SYSTEM vs READY)
+        Surface(
+            color = lockStatusColor.copy(alpha = 0.2f),
+            shape = RoundedCornerShape(4.dp),
+            modifier = Modifier.padding(horizontal = 4.dp)
+        ) {
+            Text(
+                text = lockStatusText,
+                color = lockStatusColor,
+                fontSize = 10.sp,
+                fontFamily = FontFamily.Monospace,
+                fontWeight = FontWeight.Bold,
+                modifier = Modifier.padding(horizontal = 6.dp, vertical = 2.dp)
+            )
+        }
+
+        // Cursor Position & Buffer Address
+        Text(
+            text = posStr,
+            color = if (isLight) Color(0xFF0C8599) else Color(0xFF22B8CF),
+            fontSize = 10.sp,
+            fontFamily = FontFamily.Monospace,
+            fontWeight = FontWeight.Bold
+        )
+    }
+}

src/main/java/haus/nightmare/a3270/ui/PrinterSessionDialog.kt

@@ -0,0 +1,490 @@
+package haus.nightmare.a3270.ui
+
+import android.content.Context
+import android.content.Intent
+import android.os.Environment
+import android.print.PrintAttributes
+import android.print.PrintDocumentAdapter
+import android.print.PrintManager
+import android.webkit.WebView
+import android.webkit.WebViewClient
+import android.widget.Toast
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.horizontalScroll
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalClipboardManager
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.AnnotatedString
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.KeyboardCapitalization
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.compose.ui.window.Dialog
+import androidx.compose.ui.window.DialogProperties
+import haus.nightmare.lib3270j.printer.*
+import java.io.File
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
+
+@Composable
+fun PrinterSessionDialog(
+    initialHost: String = "",
+    initialPort: Int = 0,
+    initialCodePage: String = "037",
+    initialUseTls: Boolean = false,
+    onDismiss: () -> Unit
+) {
+    val context = LocalContext.current
+    val clipboardManager = LocalClipboardManager.current
+
+    var host by remember { mutableStateOf(initialHost) }
+    var portStr by remember { mutableStateOf(if (initialPort > 0) initialPort.toString() else "") }
+    var printerLu by remember { mutableStateOf("") }
+    var assocDisplayLu by remember { mutableStateOf("") }
+    var codePage by remember { mutableStateOf(initialCodePage) }
+    var useTls by remember { mutableStateOf(initialUseTls) }
+    var pdtType by remember { mutableStateOf("DEFAULT") }
+
+    var isConnected by remember { mutableStateOf(false) }
+    var sessionStatus by remember { mutableStateOf("Disconnected") }
+    var spoolText by remember { mutableStateOf("") }
+    var pageCount by remember { mutableIntStateOf(0) }
+    var byteCount by remember { mutableIntStateOf(0) }
+
+    var printerClient by remember { mutableStateOf<Telnet3270EPClient?>(null) }
+
+    val codePagesList = haus.nightmare.a3270.storage.HostStorage.AVAILABLE_CODE_PAGES
+
+    fun startSession() {
+        val targetHost = host.trim().ifBlank { "127.0.0.1" }
+        val port = portStr.trim().toIntOrNull() ?: if (useTls) 992 else 23
+        val config = PrinterConfig(targetHost, port).apply {
+            this.isUseTls = useTls
+            this.codePage = codePage
+            if (printerLu.isNotBlank()) this.printerLuName = printerLu.trim()
+            if (assocDisplayLu.isNotBlank()) this.associatedDisplayLuName = assocDisplayLu.trim()
+            this.destinationType = PrinterConfig.DestinationType.MEMORY
+
+            val pdt = when (pdtType) {
+                "PCL5" -> haus.nightmare.lib3270j.printer.PrinterDefinitionTable.createPcl5PDT()
+                "EPSON_ESC_P" -> haus.nightmare.lib3270j.printer.PrinterDefinitionTable.createEpsonEscPPDT()
+                "POSTSCRIPT" -> haus.nightmare.lib3270j.printer.PrinterDefinitionTable.createPostScriptPDT()
+                else -> haus.nightmare.lib3270j.printer.PrinterDefinitionTable.createPlainTextPDT()
+            }
+            if (pdt != null) {
+                this.printerDefinitionTable = pdt
+            }
+        }
+
+        val client = Telnet3270EPClient(config)
+        client.addPrintListener(object : PrintSessionListener {
+            override fun onPrintJobStarted(event: PrintSessionEvent) {
+                sessionStatus = "Printing job: ${event.jobName ?: "Job"}"
+            }
+
+            override fun onPrintJobData(event: PrintSessionEvent) {
+                val captured = client.pd?.capturedText
+                if (captured != null) spoolText = captured
+                byteCount = event.byteCount.toInt()
+            }
+
+            override fun onPrintJobPageComplete(event: PrintSessionEvent) {
+                pageCount = event.pageNumber
+                byteCount = event.byteCount.toInt()
+                val captured = client.pd?.capturedText
+                if (captured != null) spoolText = captured
+            }
+
+            override fun onPrintJobComplete(event: PrintSessionEvent) {
+                pageCount = event.totalPages
+                byteCount = event.byteCount.toInt()
+                val captured = client.pd?.capturedText
+                if (captured != null) spoolText = captured
+                sessionStatus = "Print Job Complete"
+            }
+
+            override fun onPrinterStatusChanged(event: PrintSessionEvent) {
+                val status = event.statusCode
+                isConnected = (status == PrinterConstants.STATUS_CONNECTED || status == PrinterConstants.STATUS_PRINTING)
+                sessionStatus = when (status) {
+                    PrinterConstants.STATUS_CONNECTED -> "Connected"
+                    PrinterConstants.STATUS_CONNECTING -> "Connecting..."
+                    PrinterConstants.STATUS_PRINTING -> "Printing..."
+                    else -> "Disconnected"
+                }
+            }
+
+            override fun onPrinterError(event: PrintSessionEvent) {
+                sessionStatus = "Error: ${event.message ?: "Code ${event.statusCode}"}"
+            }
+        })
+
+        printerClient = client
+        sessionStatus = "Connecting..."
+        val ok = client.connect()
+        if (!ok) {
+            sessionStatus = "Failed to initiate printer connection."
+        }
+    }
+
+    fun stopSession() {
+        printerClient?.disconnect()
+        printerClient = null
+        isConnected = false
+        sessionStatus = "Disconnected"
+    }
+
+    DisposableEffect(Unit) {
+        onDispose {
+            printerClient?.disconnect()
+            printerClient = null
+        }
+    }
+
+    fun printViaAndroidService() {
+        if (spoolText.isBlank()) {
+            Toast.makeText(context, "No printer spool to print.", Toast.LENGTH_SHORT).show()
+            return
+        }
+        try {
+            val printManager = context.getSystemService(Context.PRINT_SERVICE) as? PrintManager
+            if (printManager != null) {
+                val webView = WebView(context)
+                webView.webViewClient = object : WebViewClient() {
+                    override fun onPageFinished(view: WebView?, url: String?) {
+                        val printAdapter: PrintDocumentAdapter = webView.createPrintDocumentAdapter("3287_Print_Job")
+                        printManager.print("3287 Print Job", printAdapter, PrintAttributes.Builder().build())
+                    }
+                }
+                val htmlDoc = "<html><body style='font-family:monospace; font-size:12px; white-space:pre;'>${spoolText.replace("<", "&lt;").replace(">", "&gt;")}</body></html>"
+                webView.loadDataWithBaseURL(null, htmlDoc, "text/html", "UTF-8", null)
+            }
+        } catch (e: Exception) {
+            Toast.makeText(context, "Print failed: ${e.message}", Toast.LENGTH_SHORT).show()
+        }
+    }
+
+    fun saveSpoolToFile() {
+        if (spoolText.isBlank()) {
+            Toast.makeText(context, "Spool is empty.", Toast.LENGTH_SHORT).show()
+            return
+        }
+        try {
+            val downloadsDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
+            if (!downloadsDir.exists()) downloadsDir.mkdirs()
+            val timeStamp = SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US).format(Date())
+            val file = File(downloadsDir, "3287_spool_$timeStamp.txt")
+            file.writeText(spoolText)
+            Toast.makeText(context, "Saved to Downloads/${file.name}", Toast.LENGTH_SHORT).show()
+        } catch (e: Exception) {
+            Toast.makeText(context, "Save failed: ${e.message}", Toast.LENGTH_SHORT).show()
+        }
+    }
+
+    fun shareSpool() {
+        if (spoolText.isBlank()) {
+            Toast.makeText(context, "Spool is empty.", Toast.LENGTH_SHORT).show()
+            return
+        }
+        try {
+            val intent = Intent(Intent.ACTION_SEND).apply {
+                type = "text/plain"
+                putExtra(Intent.EXTRA_SUBJECT, "3287 Printer Spool")
+                putExtra(Intent.EXTRA_TEXT, spoolText)
+            }
+            context.startActivity(Intent.createChooser(intent, "Share 3287 Spool"))
+        } catch (e: Exception) {
+            Toast.makeText(context, "Share failed: ${e.message}", Toast.LENGTH_SHORT).show()
+        }
+    }
+
+    Dialog(
+        onDismissRequest = onDismiss,
+        properties = DialogProperties(usePlatformDefaultWidth = false)
+    ) {
+        Card(
+            shape = RoundedCornerShape(16.dp),
+            colors = CardDefaults.cardColors(containerColor = Color(0xFF1E1E1E)),
+            modifier = Modifier
+                .fillMaxWidth(0.95f)
+                .heightIn(max = 700.dp)
+                .padding(vertical = 16.dp)
+        ) {
+            Column(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(16.dp),
+                verticalArrangement = Arrangement.spacedBy(8.dp)
+            ) {
+                // Header
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Column {
+                        Text(
+                            "IBM 3287 Printer Session",
+                            fontWeight = FontWeight.Bold,
+                            fontSize = 16.sp,
+                            color = Color.White
+                        )
+                        Text(
+                            "TN3270E SCS / 3270 DS Print Emulation",
+                            fontSize = 11.sp,
+                            color = Color.Gray
+                        )
+                    }
+                    Surface(
+                        color = if (isConnected) Color(0xFF51CF66).copy(alpha = 0.2f) else Color(0xFFFF6B6B).copy(alpha = 0.2f),
+                        shape = RoundedCornerShape(4.dp)
+                    ) {
+                        Text(
+                            text = sessionStatus,
+                            color = if (isConnected) Color(0xFF51CF66) else Color(0xFFFF6B6B),
+                            fontSize = 10.sp,
+                            fontWeight = FontWeight.Bold,
+                            modifier = Modifier.padding(horizontal = 6.dp, vertical = 2.dp)
+                        )
+                    }
+                }
+
+                HorizontalDivider(color = Color(0xFF2C2D30))
+
+                // Config Row 1: Host & Port
+                if (!isConnected) {
+                    Row(
+                        modifier = Modifier.fillMaxWidth(),
+                        horizontalArrangement = Arrangement.spacedBy(6.dp)
+                    ) {
+                        OutlinedTextField(
+                            value = host,
+                            onValueChange = { host = it },
+                            label = { Text("Host") },
+                            placeholder = { Text("127.0.0.1", color = Color.Gray) },
+                            singleLine = true,
+                            modifier = Modifier.weight(2.5f)
+                        )
+                        OutlinedTextField(
+                            value = portStr,
+                            onValueChange = { portStr = it },
+                            label = { Text("Port") },
+                            placeholder = { Text(if (useTls) "992" else "23", color = Color.Gray) },
+                            singleLine = true,
+                            keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Number),
+                            modifier = Modifier.weight(1f)
+                        )
+                    }
+
+                    // Config Row 2: Printer LU & Assoc Display LU
+                    Row(
+                        modifier = Modifier.fillMaxWidth(),
+                        horizontalArrangement = Arrangement.spacedBy(6.dp)
+                    ) {
+                        OutlinedTextField(
+                            value = printerLu,
+                            onValueChange = { printerLu = it },
+                            label = { Text("Printer LU (Opt)") },
+                            singleLine = true,
+                            modifier = Modifier.weight(1f)
+                        )
+                        OutlinedTextField(
+                            value = assocDisplayLu,
+                            onValueChange = { assocDisplayLu = it },
+                            label = { Text("Display LU (Opt)") },
+                            singleLine = true,
+                            modifier = Modifier.weight(1f)
+                        )
+                    }
+
+                    // PDT, Code Page & TLS Row
+                    Row(
+                        modifier = Modifier.fillMaxWidth(),
+                        verticalAlignment = Alignment.CenterVertically,
+                        horizontalArrangement = Arrangement.spacedBy(6.dp)
+                    ) {
+                        var pdtExpanded by remember { mutableStateOf(false) }
+                        val pdtList = listOf(
+                            "DEFAULT" to "Plain Text",
+                            "PCL5" to "HP PCL 5/6",
+                            "EPSON_ESC_P" to "Epson ESC/P",
+                            "POSTSCRIPT" to "PostScript"
+                        )
+                        val selectedPdtLabel = pdtList.firstOrNull { it.first == pdtType }?.second ?: "PDT"
+                        Box(modifier = Modifier.weight(1f)) {
+                            OutlinedButton(
+                                onClick = { pdtExpanded = true },
+                                modifier = Modifier.fillMaxWidth()
+                            ) {
+                                Text("PDT: $selectedPdtLabel", fontSize = 10.sp, maxLines = 1)
+                            }
+                            DropdownMenu(
+                                expanded = pdtExpanded,
+                                onDismissRequest = { pdtExpanded = false },
+                                modifier = Modifier.background(Color(0xFF2C2D30))
+                            ) {
+                                pdtList.forEach { (type, label) ->
+                                    DropdownMenuItem(
+                                        text = { Text(label, fontSize = 12.sp, color = Color.White) },
+                                        onClick = {
+                                            pdtType = type
+                                            pdtExpanded = false
+                                        }
+                                    )
+                                }
+                            }
+                        }
+
+                        var cpExpanded by remember { mutableStateOf(false) }
+                        Box(modifier = Modifier.weight(1f)) {
+                            OutlinedButton(
+                                onClick = { cpExpanded = true },
+                                modifier = Modifier.fillMaxWidth()
+                            ) {
+                                Text("CP$codePage", fontSize = 10.sp, maxLines = 1)
+                            }
+                            DropdownMenu(
+                                expanded = cpExpanded,
+                                onDismissRequest = { cpExpanded = false },
+                                modifier = Modifier.background(Color(0xFF2C2D30)).heightIn(max = 240.dp)
+                            ) {
+                                codePagesList.forEach { (cpId, label) ->
+                                    DropdownMenuItem(
+                                        text = { Text(label, fontSize = 12.sp, color = Color.White) },
+                                        onClick = {
+                                            codePage = cpId
+                                            cpExpanded = false
+                                        }
+                                    )
+                                }
+                            }
+                        }
+
+                        Row(
+                            verticalAlignment = Alignment.CenterVertically,
+                            modifier = Modifier.clickable { useTls = !useTls }
+                        ) {
+                            Checkbox(checked = useTls, onCheckedChange = { useTls = it })
+                            Text("TLS", fontSize = 11.sp, color = Color.White)
+                        }
+
+                        Button(
+                            onClick = { startSession() },
+                            colors = ButtonDefaults.buttonColors(containerColor = Color(0xFF2B8A3E))
+                        ) {
+                            Text("Connect", fontSize = 11.sp)
+                        }
+                    }
+                } else {
+                    Row(
+                        modifier = Modifier.fillMaxWidth(),
+                        horizontalArrangement = Arrangement.SpaceBetween,
+                        verticalAlignment = Alignment.CenterVertically
+                    ) {
+                        Text(
+                            "Pages: $pageCount  |  Bytes: $byteCount",
+                            fontSize = 12.sp,
+                            color = Color.LightGray,
+                            fontFamily = FontFamily.Monospace
+                        )
+                        Button(
+                            onClick = { stopSession() },
+                            colors = ButtonDefaults.buttonColors(containerColor = Color(0xFFC92A2A))
+                        ) {
+                            Text("Disconnect Printer")
+                        }
+                    }
+                }
+
+                HorizontalDivider(color = Color(0xFF2C2D30))
+
+                // Spool Display Box
+                Text("Print Spool Buffer:", fontSize = 12.sp, color = Color.Gray)
+                Box(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .weight(1f)
+                        .background(Color(0xFF141517), shape = RoundedCornerShape(8.dp))
+                        .padding(10.dp)
+                ) {
+                    if (spoolText.isBlank()) {
+                        Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
+                            Text("No printed output spooled yet.", color = Color.DarkGray, fontSize = 12.sp)
+                        }
+                    } else {
+                        Text(
+                            text = spoolText,
+                            fontFamily = FontFamily.Monospace,
+                            fontSize = 11.sp,
+                            color = Color(0xFFA5D6A7),
+                            modifier = Modifier
+                                .fillMaxSize()
+                                .verticalScroll(rememberScrollState())
+                                .horizontalScroll(rememberScrollState())
+                        )
+                    }
+                }
+
+                // Spool Action Buttons
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    TextButton(onClick = onDismiss) {
+                        Text("Close", color = Color.LightGray)
+                    }
+
+                    Row(horizontalArrangement = Arrangement.spacedBy(6.dp)) {
+                        OutlinedButton(
+                            onClick = {
+                                spoolText = ""
+                                pageCount = 0
+                                byteCount = 0
+                                printerClient?.pd?.resetCapture()
+                            }
+                        ) {
+                            Text("Clear", fontSize = 11.sp)
+                        }
+
+                        OutlinedButton(
+                            onClick = {
+                                clipboardManager.setText(AnnotatedString(spoolText))
+                                Toast.makeText(context, "Copied spool to clipboard", Toast.LENGTH_SHORT).show()
+                            }
+                        ) {
+                            Text("Copy", fontSize = 11.sp)
+                        }
+
+                        Button(
+                            onClick = { saveSpoolToFile() },
+                            colors = ButtonDefaults.buttonColors(containerColor = Color(0xFF1C7ED6))
+                        ) {
+                            Text("Save", fontSize = 11.sp)
+                        }
+
+                        Button(
+                            onClick = { printViaAndroidService() },
+                            colors = ButtonDefaults.buttonColors(containerColor = Color(0xFF2B8A3E))
+                        ) {
+                            Text("Print 🖨️", fontSize = 11.sp)
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

src/main/java/haus/nightmare/a3270/ui/ScreenExporterDialog.kt

@@ -0,0 +1,521 @@
+package haus.nightmare.a3270.ui
+
+import android.content.Context
+import android.content.Intent
+import android.graphics.Bitmap
+import android.graphics.Canvas
+import android.graphics.Paint
+import android.graphics.Typeface
+import android.net.Uri
+import android.os.Environment
+import android.widget.Toast
+import androidx.compose.foundation.background
+import androidx.compose.foundation.horizontalScroll
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalClipboardManager
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.AnnotatedString
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.compose.ui.window.Dialog
+import androidx.compose.ui.window.DialogProperties
+import androidx.core.content.FileProvider
+import haus.nightmare.lib3270j.graphics.GraphicsPlane
+import haus.nightmare.lib3270j.graphics.ProgramSymbolManager
+import haus.nightmare.lib3270j.protocol.DS3270Constants.*
+import haus.nightmare.lib3270j.screen.ScreenBuffer
+import java.io.File
+import java.io.FileOutputStream
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
+
+@Composable
+fun ScreenExporterDialog(
+    screenBuffer: ScreenBuffer?,
+    rows: Int,
+    cols: Int,
+    programSymbolManager: ProgramSymbolManager? = null,
+    graphicsPlane: GraphicsPlane? = null,
+    maskHidden: Boolean = true,
+    onDismiss: () -> Unit
+) {
+    val context = LocalContext.current
+    val clipboardManager = LocalClipboardManager.current
+
+    var exportFormat by remember { mutableStateOf("TEXT") } // TEXT, HTML, PNG
+    var statusMessage by remember { mutableStateOf("") }
+
+    val plainTextContent = remember(screenBuffer) {
+        generatePlainText(screenBuffer, rows, cols, maskHidden)
+    }
+
+    val htmlContent = remember(screenBuffer) {
+        generateHtml(screenBuffer, rows, cols, maskHidden)
+    }
+
+    fun shareText(text: String, isHtml: Boolean) {
+        try {
+            val intent = Intent(Intent.ACTION_SEND).apply {
+                type = if (isHtml) "text/html" else "text/plain"
+                putExtra(Intent.EXTRA_SUBJECT, "3270 Screen Capture")
+                putExtra(Intent.EXTRA_TEXT, text)
+            }
+            context.startActivity(Intent.createChooser(intent, "Share 3270 Screen"))
+        } catch (e: Exception) {
+            statusMessage = "Share failed: ${e.message}"
+        }
+    }
+
+    fun sharePng(bmp: Bitmap) {
+        try {
+            val cacheDir = File(context.cacheDir, "exports").apply { mkdirs() }
+            val timeStamp = SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US).format(Date())
+            val file = File(cacheDir, "screen_$timeStamp.png")
+            FileOutputStream(file).use { out ->
+                bmp.compress(Bitmap.CompressFormat.PNG, 100, out)
+            }
+            val uri: Uri = FileProvider.getUriForFile(
+                context,
+                "${context.packageName}.fileprovider",
+                file
+            )
+            val intent = Intent(Intent.ACTION_SEND).apply {
+                type = "image/png"
+                putExtra(Intent.EXTRA_STREAM, uri)
+                addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+            }
+            context.startActivity(Intent.createChooser(intent, "Share Screen PNG"))
+        } catch (e: Exception) {
+            statusMessage = "PNG Share failed: ${e.message}"
+        }
+    }
+
+    fun saveFileToStorage(format: String): String {
+        return try {
+            val downloadsDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
+            if (!downloadsDir.exists()) downloadsDir.mkdirs()
+            val timeStamp = SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US).format(Date())
+            when (format) {
+                "HTML" -> {
+                    val file = File(downloadsDir, "3270_screen_$timeStamp.html")
+                    file.writeText(htmlContent)
+                    "Saved to Downloads/${file.name}"
+                }
+                "PNG" -> {
+                    val bmp = generateBitmap(screenBuffer, rows, cols, programSymbolManager, graphicsPlane, maskHidden)
+                    val file = File(downloadsDir, "3270_screen_$timeStamp.png")
+                    FileOutputStream(file).use { out ->
+                        bmp.compress(Bitmap.CompressFormat.PNG, 100, out)
+                    }
+                    "Saved to Downloads/${file.name}"
+                }
+                else -> {
+                    val file = File(downloadsDir, "3270_screen_$timeStamp.txt")
+                    file.writeText(plainTextContent)
+                    "Saved to Downloads/${file.name}"
+                }
+            }
+        } catch (e: Exception) {
+            "Save failed: ${e.message}"
+        }
+    }
+
+    Dialog(
+        onDismissRequest = onDismiss,
+        properties = DialogProperties(usePlatformDefaultWidth = false)
+    ) {
+        Card(
+            shape = RoundedCornerShape(16.dp),
+            colors = CardDefaults.cardColors(containerColor = Color(0xFF1E1E1E)),
+            modifier = Modifier
+                .fillMaxWidth(0.95f)
+                .heightIn(max = 680.dp)
+                .padding(vertical = 16.dp)
+        ) {
+            Column(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(16.dp),
+                verticalArrangement = Arrangement.spacedBy(10.dp)
+            ) {
+                // Header
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Text(
+                        "Export / Share Screen",
+                        fontWeight = FontWeight.Bold,
+                        fontSize = 16.sp,
+                        color = Color.White
+                    )
+                    Row {
+                        FilterChip(
+                            selected = (exportFormat == "TEXT"),
+                            onClick = { exportFormat = "TEXT" },
+                            label = { Text("Plain Text", fontSize = 11.sp) }
+                        )
+                        Spacer(modifier = Modifier.width(4.dp))
+                        FilterChip(
+                            selected = (exportFormat == "HTML"),
+                            onClick = { exportFormat = "HTML" },
+                            label = { Text("HTML", fontSize = 11.sp) }
+                        )
+                        Spacer(modifier = Modifier.width(4.dp))
+                        FilterChip(
+                            selected = (exportFormat == "PNG"),
+                            onClick = { exportFormat = "PNG" },
+                            label = { Text("PNG", fontSize = 11.sp) }
+                        )
+                    }
+                }
+
+                HorizontalDivider(color = Color(0xFF2C2D30))
+
+                // Preview Box
+                Box(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .weight(1f)
+                        .background(Color(0xFF141517), shape = RoundedCornerShape(8.dp))
+                        .padding(10.dp)
+                ) {
+                    if (exportFormat == "PNG") {
+                        Column(
+                            modifier = Modifier.fillMaxSize(),
+                            verticalArrangement = Arrangement.Center,
+                            horizontalAlignment = Alignment.CenterHorizontally
+                        ) {
+                            Text("🖼️ PNG Image Export", fontSize = 15.sp, fontWeight = FontWeight.Bold, color = Color.White)
+                            Spacer(modifier = Modifier.height(6.dp))
+                            Text("Full resolution bitmap with 3270 styling and graphics plane.", fontSize = 12.sp, color = Color.LightGray)
+                        }
+                    } else {
+                        val textToShow = if (exportFormat == "HTML") htmlContent else plainTextContent
+                        Text(
+                            text = textToShow,
+                            fontFamily = FontFamily.Monospace,
+                            fontSize = 10.sp,
+                            color = Color(0xFFA5D6A7),
+                            modifier = Modifier
+                                .fillMaxSize()
+                                .verticalScroll(rememberScrollState())
+                                .horizontalScroll(rememberScrollState())
+                        )
+                    }
+                }
+
+                if (statusMessage.isNotBlank()) {
+                    Text(
+                        text = statusMessage,
+                        fontSize = 12.sp,
+                        color = Color(0xFF51CF66)
+                    )
+                }
+
+                // Action Buttons
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    TextButton(onClick = onDismiss) {
+                        Text("Close", color = Color.LightGray)
+                    }
+
+                    Row(horizontalArrangement = Arrangement.spacedBy(6.dp)) {
+                        if (exportFormat != "PNG") {
+                            OutlinedButton(
+                                onClick = {
+                                    val content = if (exportFormat == "HTML") htmlContent else plainTextContent
+                                    clipboardManager.setText(AnnotatedString(content))
+                                    statusMessage = "Copied to clipboard."
+                                    Toast.makeText(context, "Copied to clipboard", Toast.LENGTH_SHORT).show()
+                                }
+                            ) {
+                                Text("Copy", fontSize = 12.sp)
+                            }
+                        }
+
+                        Button(
+                            onClick = {
+                                val msg = saveFileToStorage(exportFormat)
+                                statusMessage = msg
+                                Toast.makeText(context, msg, Toast.LENGTH_SHORT).show()
+                            },
+                            colors = ButtonDefaults.buttonColors(containerColor = Color(0xFF1C7ED6))
+                        ) {
+                            Text("Save File", fontSize = 12.sp)
+                        }
+
+                        Button(
+                            onClick = {
+                                when (exportFormat) {
+                                    "PNG" -> {
+                                        val bmp = generateBitmap(screenBuffer, rows, cols, programSymbolManager, graphicsPlane, maskHidden)
+                                        sharePng(bmp)
+                                    }
+                                    "HTML" -> shareText(htmlContent, true)
+                                    else -> shareText(plainTextContent, false)
+                                }
+                            },
+                            colors = ButtonDefaults.buttonColors(containerColor = Color(0xFF2B8A3E))
+                        ) {
+                            Text("Share 📤", fontSize = 12.sp)
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+private fun generatePlainText(screenBuffer: ScreenBuffer?, rows: Int, cols: Int, maskHidden: Boolean): String {
+    if (screenBuffer == null) return ""
+    val sb = StringBuilder()
+    var currentHidden = false
+
+    for (r in 0 until rows) {
+        val rowSb = StringBuilder()
+        for (c in 0 until cols) {
+            val addr = r * cols + c
+            val cell = screenBuffer.getCell(addr)
+            if (cell.fa.toInt() != 0) {
+                val faVal = cell.fa.toInt() and 0xFF
+                currentHidden = (faVal and FA_INT_HIGH_SEL) == 0
+                rowSb.append(' ')
+            } else {
+                if (currentHidden && maskHidden) {
+                    rowSb.append(' ')
+                } else {
+                    val ch = cell.ucs4
+                    rowSb.append(if (ch in ' '..'~' || ch > '\u007F') ch else ' ')
+                }
+            }
+        }
+        sb.append(rowSb.toString().trimEnd()).append("\n")
+    }
+    return sb.toString()
+}
+
+private fun generateHtml(screenBuffer: ScreenBuffer?, rows: Int, cols: Int, maskHidden: Boolean): String {
+    if (screenBuffer == null) return "<html><body><pre></pre></body></html>"
+    val sb = StringBuilder()
+    sb.append("<!DOCTYPE html>\n<html>\n<head>\n")
+    sb.append("<meta charset=\"UTF-8\">\n")
+    sb.append("<style>\n")
+    sb.append("body { background-color: #0A0A0A; color: #00FF00; font-family: monospace; font-size: 14px; margin: 20px; }\n")
+    sb.append("pre { line-height: 1.2; font-family: monospace; }\n")
+    sb.append(".c-green { color: #00FF00; }\n")
+    sb.append(".c-white { color: #FFFFFF; }\n")
+    sb.append(".c-blue { color: #7890F0; }\n")
+    sb.append(".c-red { color: #FF0000; }\n")
+    sb.append(".c-yellow { color: #FFFF00; }\n")
+    sb.append(".c-turquoise { color: #00FFFF; }\n")
+    sb.append(".c-pink { color: #FF00FF; }\n")
+    sb.append(".c-orange { color: #FFA200; }\n")
+    sb.append(".c-mustard { color: #A0A000; }\n")
+    sb.append(".c-grey { color: #C0C0C0; }\n")
+    sb.append("</style>\n</head>\n<body>\n<pre>\n")
+
+    var currentHidden = false
+    var currentProt = false
+    var currentHi = false
+    var currentFieldEa: haus.nightmare.lib3270j.screen.ExtendedAttribute? = null
+
+    for (r in 0 until rows) {
+        for (c in 0 until cols) {
+            val addr = r * cols + c
+            val cell = screenBuffer.getCell(addr)
+            if (cell.fa.toInt() != 0) {
+                val faVal = cell.fa.toInt() and 0xFF
+                currentProt = (faVal and FA_PROTECT) != 0
+                currentHi = (faVal and FA_INT_HIGH_SEL) == FA_INT_HIGH_SEL
+                currentHidden = (faVal and FA_INT_HIGH_SEL) == 0
+                currentFieldEa = cell
+                sb.append(' ')
+            } else {
+                if (currentHidden && maskHidden) {
+                    sb.append(' ')
+                } else {
+                    val ch = cell.ucs4
+                    val fgByte = if (cell.fg != 0.toByte()) (cell.fg.toInt() and 0xFF)
+                                 else (currentFieldEa?.fg?.toInt()?.and(0xFF) ?: 0)
+                    val colorClass = if (fgByte in 0xf0..0xff) {
+                        when (fgByte - 0xf0) {
+                            1 -> "c-blue"
+                            2 -> "c-red"
+                            3 -> "c-pink"
+                            4 -> "c-green"
+                            5 -> "c-turquoise"
+                            6 -> "c-yellow"
+                            7 -> "c-white"
+                            9 -> "c-blue"
+                            10 -> "c-orange"
+                            11 -> "c-pink"
+                            12 -> "c-green"
+                            13 -> "c-turquoise"
+                            14 -> "c-mustard"
+                            15 -> "c-grey"
+                            else -> "c-green"
+                        }
+                    } else {
+                        when {
+                            currentProt && currentHi -> "c-white"
+                            currentProt && !currentHi -> "c-turquoise"
+                            !currentProt && currentHi -> "c-red"
+                            else -> "c-green"
+                        }
+                    }
+                    val escChar = when (ch) {
+                        '<' -> "&lt;"
+                        '>' -> "&gt;"
+                        '&' -> "&amp;"
+                        '"' -> "&quot;"
+                        else -> if (ch in ' '..'~' || ch > '\u007F') ch.toString() else " "
+                    }
+                    sb.append("<span class=\"$colorClass\">$escChar</span>")
+                }
+            }
+        }
+        sb.append("\n")
+    }
+
+    sb.append("</pre>\n</body>\n</html>")
+    return sb.toString()
+}
+
+private fun generateBitmap(
+    screenBuffer: ScreenBuffer?,
+    rows: Int,
+    cols: Int,
+    programSymbolManager: ProgramSymbolManager?,
+    graphicsPlane: GraphicsPlane?,
+    maskHidden: Boolean
+): Bitmap {
+    val charWidth = 14
+    val charHeight = 24
+    val width = cols * charWidth
+    val height = rows * charHeight
+
+    val bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888)
+    val canvas = Canvas(bitmap)
+
+    // Fill background
+    val bgPaint = Paint().apply {
+        color = android.graphics.Color.parseColor("#0A0A0A")
+        style = Paint.Style.FILL
+    }
+    canvas.drawRect(0f, 0f, width.toFloat(), height.toFloat(), bgPaint)
+
+    if (screenBuffer == null) return bitmap
+
+    // Layer 1: Vector graphics plane (under text)
+    if (graphicsPlane != null && graphicsPlane.hasContent()) {
+        val rgb = graphicsPlane.rgbBuffer
+        val gWidth = graphicsPlane.canvasWidth
+        val gHeight = graphicsPlane.canvasHeight
+        if (rgb != null && gWidth > 0 && gHeight > 0) {
+            val gfxBmp = Bitmap.createBitmap(rgb, gWidth, gHeight, Bitmap.Config.ARGB_8888)
+            val scaledGfx = Bitmap.createScaledBitmap(gfxBmp, width, height, true)
+            canvas.drawBitmap(scaledGfx, 0f, 0f, null)
+        }
+    }
+
+    val textPaint = Paint().apply {
+        isAntiAlias = true
+        typeface = Typeface.MONOSPACE
+        textSize = 18f
+    }
+
+    var currentHidden = false
+    var currentProt = false
+    var currentHi = false
+    var currentFieldEa: haus.nightmare.lib3270j.screen.ExtendedAttribute? = null
+
+    for (r in 0 until rows) {
+        for (c in 0 until cols) {
+            val addr = r * cols + c
+            val cell = screenBuffer.getCell(addr)
+            val left = (c * charWidth).toFloat()
+            val top = (r * charHeight).toFloat()
+
+            if (cell.fa.toInt() != 0) {
+                val faVal = cell.fa.toInt() and 0xFF
+                currentProt = (faVal and FA_PROTECT) != 0
+                currentHi = (faVal and FA_INT_HIGH_SEL) == FA_INT_HIGH_SEL
+                currentHidden = (faVal and FA_INT_HIGH_SEL) == 0
+                currentFieldEa = cell
+            } else {
+                val csVal = cell.cs.toInt() and 0xFF
+                val ecVal = cell.ec.toInt() and 0xFF
+                val fgByte = if (cell.fg != 0.toByte()) (cell.fg.toInt() and 0xFF)
+                             else (currentFieldEa?.fg?.toInt()?.and(0xFF) ?: 0)
+                val cellColor = if (fgByte in 0xf0..0xff) {
+                    when (fgByte - 0xf0) {
+                        1 -> android.graphics.Color.parseColor("#7890F0")
+                        2 -> android.graphics.Color.parseColor("#FF0000")
+                        3 -> android.graphics.Color.parseColor("#FF00FF")
+                        4 -> android.graphics.Color.parseColor("#00FF00")
+                        5 -> android.graphics.Color.parseColor("#00FFFF")
+                        6 -> android.graphics.Color.parseColor("#FFFF00")
+                        7 -> android.graphics.Color.WHITE
+                        9 -> android.graphics.Color.parseColor("#000080")
+                        10 -> android.graphics.Color.parseColor("#FFA200")
+                        11 -> android.graphics.Color.parseColor("#800080")
+                        12 -> android.graphics.Color.parseColor("#008000")
+                        13 -> android.graphics.Color.parseColor("#008080")
+                        14 -> android.graphics.Color.parseColor("#A0A000")
+                        15 -> android.graphics.Color.parseColor("#C0C0C0")
+                        else -> android.graphics.Color.parseColor("#00FF00")
+                    }
+                } else {
+                    when {
+                        currentProt && currentHi -> android.graphics.Color.WHITE
+                        currentProt && !currentHi -> android.graphics.Color.parseColor("#00FFFF")
+                        !currentProt && currentHi -> android.graphics.Color.parseColor("#FF0000")
+                        else -> android.graphics.Color.parseColor("#00FF00")
+                    }
+                }
+
+                var drawnAsPs = false
+                if (csVal >= 0x40 && programSymbolManager != null) {
+                    val slot = programSymbolManager.getSymbol(csVal, ecVal)
+                    if (slot != null) {
+                        val symWidth = slot.width
+                        val symHeight = slot.height
+                        val bgArgb = android.graphics.Color.TRANSPARENT
+                        val rgbArray = slot.getRgbPixels(cellColor, bgArgb)
+                        if (rgbArray != null && symWidth > 0 && symHeight > 0) {
+                            val symBmp = Bitmap.createBitmap(rgbArray, symWidth, symHeight, Bitmap.Config.ARGB_8888)
+                            canvas.drawBitmap(symBmp, null, android.graphics.RectF(left, top, left + charWidth, top + charHeight), null)
+                            drawnAsPs = true
+                        }
+                    }
+                }
+
+                if (!drawnAsPs && (!currentHidden || !maskHidden)) {
+                    val ch = cell.ucs4
+                    if (ch in ' '..'~' || ch > '\u007F') {
+                        textPaint.color = cellColor
+                        canvas.drawText(ch.toString(), left + 2f, top + 18f, textPaint)
+                    }
+                }
+            }
+        }
+    }
+
+    return bitmap
+}

src/main/java/haus/nightmare/a3270/ui/ScriptDialog.kt

@@ -0,0 +1,211 @@
+package haus.nightmare.a3270.ui
+
+import androidx.compose.foundation.horizontalScroll
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.KeyboardCapitalization
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.compose.ui.window.Dialog
+import androidx.compose.ui.window.DialogProperties
+
+@Composable
+fun ScriptDialog(
+    initialScript: String = "",
+    onDismiss: () -> Unit,
+    onExecuteScript: (script: String, onStatus: (String) -> Unit, onComplete: (String?) -> Unit) -> Unit
+) {
+    var scriptText by remember { mutableStateOf(initialScript.ifBlank { "# Sample 3270 Script\nLOGON APPLID(TSO)[enter]\n[wait]\nUSERID[tab]PASSWORD[enter]" }) }
+    var isExecuting by remember { mutableStateOf(false) }
+    var executionStatus by remember { mutableStateOf("") }
+    var executionError by remember { mutableStateOf<String?>(null) }
+
+    fun insertToken(token: String) {
+        scriptText += token
+    }
+
+    Dialog(
+        onDismissRequest = { if (!isExecuting) onDismiss() },
+        properties = DialogProperties(usePlatformDefaultWidth = false)
+    ) {
+        Card(
+            shape = RoundedCornerShape(16.dp),
+            colors = CardDefaults.cardColors(containerColor = Color(0xFF1E1E1E)),
+            modifier = Modifier
+                .fillMaxWidth(0.95f)
+                .heightIn(max = 680.dp)
+                .padding(vertical = 16.dp)
+        ) {
+            Column(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(16.dp),
+                verticalArrangement = Arrangement.spacedBy(10.dp)
+            ) {
+                // Header
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Text(
+                        "Run Keystroke Script / Macro",
+                        fontWeight = FontWeight.Bold,
+                        fontSize = 16.sp,
+                        color = Color.White
+                    )
+                    Text(
+                        "ECL Mnemonic Tokens",
+                        fontSize = 11.sp,
+                        color = Color.Gray
+                    )
+                }
+
+                HorizontalDivider(color = Color(0xFF2C2D30))
+
+                // Mnemonic Quick Insert Chips Row 1
+                Text("Insert Mnemonic Keys:", fontSize = 11.sp, color = Color.LightGray)
+                val tokenScroll1 = rememberScrollState()
+                Row(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .horizontalScroll(tokenScroll1),
+                    horizontalArrangement = Arrangement.spacedBy(4.dp)
+                ) {
+                    listOf(
+                        "[enter]", "[tab]", "[backtab]", "[home]", "[clear]",
+                        "[reset]", "[eraseeof]", "[eraseinpt]", "[attn]", "[sysreq]",
+                        "[wordleft]", "[wordright]", "[fieldend]", "[deleteword]", "[cursel]", "[lightpen]"
+                    ).forEach { tok ->
+                        SuggestionChip(
+                            onClick = { insertToken(tok) },
+                            label = { Text(tok, fontSize = 10.sp, fontFamily = FontFamily.Monospace) }
+                        )
+                    }
+                }
+
+                // Mnemonic Quick Insert Chips Row 2 (PF Keys)
+                val tokenScroll2 = rememberScrollState()
+                Row(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .horizontalScroll(tokenScroll2),
+                    horizontalArrangement = Arrangement.spacedBy(4.dp)
+                ) {
+                    (1..24).forEach { pf ->
+                        val tok = "[pf$pf]"
+                        SuggestionChip(
+                            onClick = { insertToken(tok) },
+                            label = { Text("PF$pf", fontSize = 10.sp, fontFamily = FontFamily.Monospace) }
+                        )
+                    }
+                }
+
+                // Script Editor Box
+                OutlinedTextField(
+                    value = scriptText,
+                    onValueChange = { scriptText = it },
+                    label = { Text("Script Text / Mnemonic Commands") },
+                    placeholder = { Text("Type characters or tokens like [enter], [pf3], etc.") },
+                    keyboardOptions = KeyboardOptions(
+                        capitalization = KeyboardCapitalization.None,
+                        autoCorrect = false,
+                        keyboardType = KeyboardType.Ascii
+                    ),
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .weight(1f),
+                    textStyle = LocalTextStyle.current.copy(fontFamily = FontFamily.Monospace, fontSize = 12.sp)
+                )
+
+                // Status or Error
+                if (isExecuting) {
+                    Row(
+                        verticalAlignment = Alignment.CenterVertically,
+                        horizontalArrangement = Arrangement.spacedBy(8.dp),
+                        modifier = Modifier.fillMaxWidth()
+                    ) {
+                        CircularProgressIndicator(modifier = Modifier.size(16.dp), strokeWidth = 2.dp)
+                        Text(
+                            text = executionStatus.ifBlank { "Executing script..." },
+                            fontSize = 12.sp,
+                            color = Color(0xFF339AF0)
+                        )
+                    }
+                } else if (executionError != null) {
+                    Text(
+                        text = "Error: $executionError",
+                        fontSize = 12.sp,
+                        color = Color(0xFFFF6B6B)
+                    )
+                } else if (executionStatus.isNotBlank()) {
+                    Text(
+                        text = executionStatus,
+                        fontSize = 12.sp,
+                        color = Color(0xFF51CF66)
+                    )
+                }
+
+                // Bottom Action Buttons
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.SpaceBetween,
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    TextButton(
+                        onClick = onDismiss,
+                        enabled = !isExecuting
+                    ) {
+                        Text("Close", color = Color.LightGray)
+                    }
+
+                    Row(horizontalArrangement = Arrangement.spacedBy(6.dp)) {
+                        OutlinedButton(
+                            onClick = { scriptText = "" },
+                            enabled = !isExecuting
+                        ) {
+                            Text("Clear")
+                        }
+
+                        Button(
+                            onClick = {
+                                if (scriptText.isNotBlank()) {
+                                    isExecuting = true
+                                    executionError = null
+                                    executionStatus = "Starting..."
+                                    onExecuteScript(
+                                        scriptText,
+                                        { status -> executionStatus = status },
+                                        { error ->
+                                            isExecuting = false
+                                            if (error != null) {
+                                                executionError = error
+                                            } else {
+                                                executionStatus = "Script completed successfully."
+                                            }
+                                        }
+                                    )
+                                }
+                            },
+                            enabled = !isExecuting && scriptText.isNotBlank(),
+                            colors = ButtonDefaults.buttonColors(containerColor = Color(0xFF2B8A3E))
+                        ) {
+                            Text("Execute Script ▶")
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

src/main/java/haus/nightmare/a3270/ui/SettingsDialog.kt

@@ -0,0 +1,795 @@
+package haus.nightmare.a3270.ui
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.compose.ui.window.Dialog
+
+import androidx.compose.ui.window.DialogProperties
+
+@Composable
+fun SettingsDialog(
+    initialMaskHiddenInput: Boolean,
+    initialCursorBlink: Boolean,
+    initialHapticFeedback: Boolean = true,
+    initialVerifyCerts: Boolean = true,
+    initialDefaultGraphicsMode: String = "BOTH",
+    initialDefaultCodePage: String = "037",
+    initialUiTheme: String = "DARK",
+    initialCrosshairRuler: Boolean = false,
+    initialCursorStyle: String = "BLOCK",
+    initialBlockSelectMode: Boolean = false,
+    initialStartupBehavior: String = "SHOW_CONNECT",
+    initialDynamicRows: Int = 62,
+    initialDynamicCols: Int = 160,
+    initialEntryAssistDocMode: Boolean = false,
+    initialEntryAssistWordWrap: Boolean = false,
+    initialEntryAssistStartCol: Int = 1,
+    initialEntryAssistEndCol: Int = 80,
+    initialEntryAssistBell: Boolean = false,
+    initialEntryAssistBellCol: Int = 75,
+    initialEntryAssistTabStops: String = "5,10,15,20,25,30,35,40,45,50,55,60,65,70,75",
+    initialInsertOffOnAid: Boolean = true,
+    initialFourColorOverride: Boolean = false,
+    initialNumericFieldLock: Boolean = true,
+    initialAutoSkipEnabled: Boolean = true,
+    onDismiss: () -> Unit,
+    onSave: (
+        maskHiddenInput: Boolean,
+        cursorBlink: Boolean,
+        hapticFeedback: Boolean,
+        verifyCerts: Boolean,
+        defaultGraphicsMode: String,
+        defaultCodePage: String,
+        uiTheme: String,
+        crosshairRuler: Boolean,
+        cursorStyle: String,
+        blockSelectMode: Boolean,
+        startupBehavior: String,
+        dynamicRows: Int,
+        dynamicCols: Int,
+        entryAssistDocMode: Boolean,
+        entryAssistWordWrap: Boolean,
+        entryAssistStartCol: Int,
+        entryAssistEndCol: Int,
+        entryAssistBell: Boolean,
+        entryAssistBellCol: Int,
+        entryAssistTabStops: String,
+        insertOffOnAid: Boolean,
+        fourColorOverride: Boolean,
+        numericFieldLock: Boolean,
+        autoSkipEnabled: Boolean
+    ) -> Unit
+) {
+    val context = androidx.compose.ui.platform.LocalContext.current
+    val clipboardManager = androidx.compose.ui.platform.LocalClipboardManager.current
+
+    var maskHiddenInput by remember { mutableStateOf(initialMaskHiddenInput) }
+    var cursorBlink by remember { mutableStateOf(initialCursorBlink) }
+    var hapticFeedback by remember { mutableStateOf(initialHapticFeedback) }
+    var verifyCerts by remember { mutableStateOf(initialVerifyCerts) }
+    var defaultGraphicsMode by remember { mutableStateOf(initialDefaultGraphicsMode) }
+    var defaultCodePage by remember { mutableStateOf(initialDefaultCodePage) }
+
+    var uiTheme by remember { mutableStateOf(initialUiTheme) }
+    var crosshairRuler by remember { mutableStateOf(initialCrosshairRuler) }
+    var cursorStyle by remember { mutableStateOf(initialCursorStyle) }
+    var blockSelectMode by remember { mutableStateOf(initialBlockSelectMode) }
+    var startupBehavior by remember { mutableStateOf(initialStartupBehavior) }
+    var dynamicRowsStr by remember { mutableStateOf(initialDynamicRows.toString()) }
+    var dynamicColsStr by remember { mutableStateOf(initialDynamicCols.toString()) }
+
+    var entryAssistDocMode by remember { mutableStateOf(initialEntryAssistDocMode) }
+    var entryAssistWordWrap by remember { mutableStateOf(initialEntryAssistWordWrap) }
+    var entryAssistStartColStr by remember { mutableStateOf(initialEntryAssistStartCol.toString()) }
+    var entryAssistEndColStr by remember { mutableStateOf(initialEntryAssistEndCol.toString()) }
+    var entryAssistBell by remember { mutableStateOf(initialEntryAssistBell) }
+    var entryAssistBellColStr by remember { mutableStateOf(initialEntryAssistBellCol.toString()) }
+    var entryAssistTabStops by remember { mutableStateOf(initialEntryAssistTabStops) }
+    var insertOffOnAid by remember { mutableStateOf(initialInsertOffOnAid) }
+    var fourColorOverride by remember { mutableStateOf(initialFourColorOverride) }
+    var numericFieldLock by remember { mutableStateOf(initialNumericFieldLock) }
+    var autoSkipEnabled by remember { mutableStateOf(initialAutoSkipEnabled) }
+
+    var showImportDialog by remember { mutableStateOf(false) }
+
+    Dialog(
+        onDismissRequest = onDismiss,
+        properties = DialogProperties(usePlatformDefaultWidth = false)
+    ) {
+        Card(
+            shape = RoundedCornerShape(16.dp),
+            colors = CardDefaults.cardColors(containerColor = Color(0xFF1E1E1E)),
+            modifier = Modifier
+                .fillMaxWidth(0.95f)
+                .heightIn(max = 700.dp)
+                .padding(vertical = 16.dp)
+        ) {
+            Column(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .verticalScroll(rememberScrollState())
+                    .padding(20.dp)
+            ) {
+                Text(
+                    text = "Terminal Settings",
+                    fontSize = 18.sp,
+                    fontWeight = FontWeight.Bold,
+                    color = Color.White
+                )
+
+                Spacer(modifier = Modifier.height(16.dp))
+
+                // SECTION 1: APPEARANCE
+                Text("Appearance", fontSize = 13.sp, fontWeight = FontWeight.Bold, color = Color(0xFF339AF0))
+                Spacer(modifier = Modifier.height(8.dp))
+
+                // UI Theme
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.SpaceBetween
+                ) {
+                    Text("UI Theme", fontSize = 14.sp, fontWeight = FontWeight.SemiBold, color = Color.White)
+                    Row(horizontalArrangement = Arrangement.spacedBy(6.dp)) {
+                        listOf("DARK" to "Dark", "LIGHT" to "Light").forEach { (themeKey, themeLabel) ->
+                            val isSelected = uiTheme.equals(themeKey, ignoreCase = true)
+                            FilterChip(
+                                selected = isSelected,
+                                onClick = { uiTheme = themeKey },
+                                label = { Text(themeLabel, fontSize = 11.sp) }
+                            )
+                        }
+                    }
+                }
+
+                Spacer(modifier = Modifier.height(10.dp))
+
+                // Crosshair Ruler
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.SpaceBetween
+                ) {
+                    Column(modifier = Modifier.weight(1f).padding(end = 12.dp)) {
+                        Text("Crosshair Ruler", fontSize = 14.sp, fontWeight = FontWeight.SemiBold, color = Color.White)
+                        Text("Display intersecting row/column ruler tracking cursor position.", fontSize = 12.sp, color = Color.LightGray)
+                    }
+                    Switch(
+                        checked = crosshairRuler,
+                        onCheckedChange = { crosshairRuler = it },
+                        colors = SwitchDefaults.colors(checkedThumbColor = Color.White, checkedTrackColor = Color(0xFF2B8A3E))
+                    )
+                }
+
+                Spacer(modifier = Modifier.height(10.dp))
+
+                // Cursor Style
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.SpaceBetween
+                ) {
+                    Column(modifier = Modifier.weight(1f).padding(end = 12.dp)) {
+                        Text("Cursor Style", fontSize = 14.sp, fontWeight = FontWeight.SemiBold, color = Color.White)
+                        Text("Shape of 3270 screen cursor.", fontSize = 12.sp, color = Color.LightGray)
+                    }
+                    Row(horizontalArrangement = Arrangement.spacedBy(6.dp)) {
+                        listOf("BLOCK" to "Block", "UNDERLINE" to "Underline").forEach { (styleKey, styleLabel) ->
+                            val isSelected = cursorStyle.equals(styleKey, ignoreCase = true)
+                            FilterChip(
+                                selected = isSelected,
+                                onClick = { cursorStyle = styleKey },
+                                label = { Text(styleLabel, fontSize = 11.sp) }
+                            )
+                        }
+                    }
+                }
+
+                Spacer(modifier = Modifier.height(10.dp))
+
+                // Blinking Cursor
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.SpaceBetween
+                ) {
+                    Column(modifier = Modifier.weight(1f).padding(end = 12.dp)) {
+                        Text("Blinking Cursor", fontSize = 14.sp, fontWeight = FontWeight.SemiBold, color = Color.White)
+                        Text("Blink the terminal cursor indicator.", fontSize = 12.sp, color = Color.LightGray)
+                    }
+                    Switch(
+                        checked = cursorBlink,
+                        onCheckedChange = { cursorBlink = it },
+                        colors = SwitchDefaults.colors(checkedThumbColor = Color.White, checkedTrackColor = Color(0xFF2B8A3E))
+                    )
+                }
+
+                Spacer(modifier = Modifier.height(16.dp))
+                HorizontalDivider(color = Color(0xFF2C2D30))
+                Spacer(modifier = Modifier.height(16.dp))
+
+                // SECTION 2: INTERACTION & BEHAVIOR
+                Text("Interaction & Behavior", fontSize = 13.sp, fontWeight = FontWeight.Bold, color = Color(0xFF339AF0))
+                Spacer(modifier = Modifier.height(8.dp))
+
+                // Mask Hidden Inputs
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.SpaceBetween
+                ) {
+                    Column(modifier = Modifier.weight(1f).padding(end = 12.dp)) {
+                        Text("Show '*' for Hidden Fields", fontSize = 14.sp, fontWeight = FontWeight.SemiBold, color = Color.White)
+                        Text("Display asterisks for typed characters in password fields.", fontSize = 12.sp, color = Color.LightGray)
+                    }
+                    Switch(
+                        checked = maskHiddenInput,
+                        onCheckedChange = { maskHiddenInput = it },
+                        colors = SwitchDefaults.colors(checkedThumbColor = Color.White, checkedTrackColor = Color(0xFF2B8A3E))
+                    )
+                }
+
+                Spacer(modifier = Modifier.height(10.dp))
+
+                // Block Selection Mode
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.SpaceBetween
+                ) {
+                    Column(modifier = Modifier.weight(1f).padding(end = 12.dp)) {
+                        Text("Block Selection Mode", fontSize = 14.sp, fontWeight = FontWeight.SemiBold, color = Color.White)
+                        Text("Select rectangular blocks instead of linear character stream.", fontSize = 12.sp, color = Color.LightGray)
+                    }
+                    Switch(
+                        checked = blockSelectMode,
+                        onCheckedChange = { blockSelectMode = it },
+                        colors = SwitchDefaults.colors(checkedThumbColor = Color.White, checkedTrackColor = Color(0xFF2B8A3E))
+                    )
+                }
+
+                Spacer(modifier = Modifier.height(10.dp))
+
+                // Haptic Feedback
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.SpaceBetween
+                ) {
+                    Column(modifier = Modifier.weight(1f).padding(end = 12.dp)) {
+                        Text("Button Haptic Feedback", fontSize = 14.sp, fontWeight = FontWeight.SemiBold, color = Color.White)
+                        Text("Vibrate softly when tapping keybar buttons.", fontSize = 12.sp, color = Color.LightGray)
+                    }
+                    Switch(
+                        checked = hapticFeedback,
+                        onCheckedChange = { hapticFeedback = it },
+                        colors = SwitchDefaults.colors(checkedThumbColor = Color.White, checkedTrackColor = Color(0xFF2B8A3E))
+                    )
+                }
+
+                Spacer(modifier = Modifier.height(10.dp))
+
+                // Startup Behavior
+                Column(modifier = Modifier.fillMaxWidth()) {
+                    Text("Startup Behavior", fontSize = 14.sp, fontWeight = FontWeight.SemiBold, color = Color.White)
+                    Text("Action to take when launching the application.", fontSize = 12.sp, color = Color.LightGray)
+                    Spacer(modifier = Modifier.height(6.dp))
+                    Row(
+                        modifier = Modifier.fillMaxWidth(),
+                        horizontalArrangement = Arrangement.spacedBy(6.dp)
+                    ) {
+                        listOf(
+                            "SHOW_CONNECT" to "Show Connect",
+                            "DO_NOTHING" to "Do Nothing",
+                            "AUTO_CONNECT" to "Auto-Connect"
+                        ).forEach { (sbKey, sbLabel) ->
+                            val isSelected = startupBehavior.equals(sbKey, ignoreCase = true)
+                            FilterChip(
+                                selected = isSelected,
+                                onClick = { startupBehavior = sbKey },
+                                label = { Text(sbLabel, fontSize = 10.sp) },
+                                modifier = Modifier.weight(1f)
+                            )
+                        }
+                    }
+                }
+
+                Spacer(modifier = Modifier.height(16.dp))
+                HorizontalDivider(color = Color(0xFF2C2D30))
+                Spacer(modifier = Modifier.height(16.dp))
+
+                // SECTION 3: PROTOCOL & DYNAMIC DEFAULTS
+                Text("Protocol & Defaults", fontSize = 13.sp, fontWeight = FontWeight.Bold, color = Color(0xFF339AF0))
+                Spacer(modifier = Modifier.height(8.dp))
+
+                // Default Dynamic Dimensions
+                Column(modifier = Modifier.fillMaxWidth()) {
+                    Text("Default Dynamic Screen Dimensions", fontSize = 14.sp, fontWeight = FontWeight.SemiBold, color = Color.White)
+                    Text("Rows (24-255) and columns (80-255) for IBM-DYNAMIC sessions.", fontSize = 12.sp, color = Color.LightGray)
+                    Spacer(modifier = Modifier.height(6.dp))
+                    Row(
+                        modifier = Modifier.fillMaxWidth(),
+                        horizontalArrangement = Arrangement.spacedBy(8.dp)
+                    ) {
+                        OutlinedTextField(
+                            value = dynamicRowsStr,
+                            onValueChange = { dynamicRowsStr = it },
+                            label = { Text("Rows (24-255)") },
+                            singleLine = true,
+                            modifier = Modifier.weight(1f),
+                            keyboardOptions = androidx.compose.foundation.text.KeyboardOptions(
+                                keyboardType = androidx.compose.ui.text.input.KeyboardType.Number
+                            )
+                        )
+                        OutlinedTextField(
+                            value = dynamicColsStr,
+                            onValueChange = { dynamicColsStr = it },
+                            label = { Text("Cols (80-255)") },
+                            singleLine = true,
+                            modifier = Modifier.weight(1f),
+                            keyboardOptions = androidx.compose.foundation.text.KeyboardOptions(
+                                keyboardType = androidx.compose.ui.text.input.KeyboardType.Number
+                            )
+                        )
+                    }
+                }
+
+                Spacer(modifier = Modifier.height(12.dp))
+
+                // Graphics Mode
+                Column(modifier = Modifier.fillMaxWidth()) {
+                    Text("Default Graphics Mode", fontSize = 14.sp, fontWeight = FontWeight.SemiBold, color = Color.White)
+                    Spacer(modifier = Modifier.height(6.dp))
+                    Row(
+                        modifier = Modifier.fillMaxWidth(),
+                        horizontalArrangement = Arrangement.spacedBy(6.dp)
+                    ) {
+                        listOf(
+                            "BOTH" to "Both",
+                            "VECTOR_GRAPHICS" to "Vector",
+                            "PROGRAMMED_SYMBOLS" to "Symbols",
+                            "NONE" to "Off"
+                        ).forEach { (modeKey, modeLabel) ->
+                            val isSelected = defaultGraphicsMode.equals(modeKey, ignoreCase = true)
+                            FilterChip(
+                                selected = isSelected,
+                                onClick = { defaultGraphicsMode = modeKey },
+                                label = { Text(modeLabel, fontSize = 10.sp) },
+                                modifier = Modifier.weight(1f)
+                            )
+                        }
+                    }
+                }
+
+                Spacer(modifier = Modifier.height(12.dp))
+
+                // Default CodePage
+                var codePageMenuExpanded by remember { mutableStateOf(false) }
+                val codePagesList = haus.nightmare.a3270.storage.HostStorage.AVAILABLE_CODE_PAGES
+                val selectedCpLabel = codePagesList.firstOrNull { it.first == defaultCodePage }?.second ?: "Code Page $defaultCodePage"
+
+                Column(modifier = Modifier.fillMaxWidth()) {
+                    Text("Default EBCDIC Code Page", fontSize = 14.sp, fontWeight = FontWeight.SemiBold, color = Color.White)
+                    Spacer(modifier = Modifier.height(6.dp))
+                    Box(modifier = Modifier.fillMaxWidth()) {
+                        Surface(
+                            shape = RoundedCornerShape(6.dp),
+                            color = Color(0xFF2C2D30),
+                            border = androidx.compose.foundation.BorderStroke(1.dp, Color(0xFF495057)),
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .height(38.dp)
+                                .clickable { codePageMenuExpanded = true }
+                        ) {
+                            Row(
+                                modifier = Modifier.fillMaxSize().padding(horizontal = 10.dp),
+                                horizontalArrangement = Arrangement.SpaceBetween,
+                                verticalAlignment = Alignment.CenterVertically
+                            ) {
+                                Text(text = selectedCpLabel, color = Color.White, fontSize = 12.sp, fontWeight = FontWeight.Medium)
+                                Text("▼", color = Color.Gray, fontSize = 10.sp)
+                            }
+                        }
+                        DropdownMenu(
+                            expanded = codePageMenuExpanded,
+                            onDismissRequest = { codePageMenuExpanded = false },
+                            modifier = Modifier.background(Color(0xFF2C2D30)).heightIn(max = 280.dp)
+                        ) {
+                            codePagesList.forEach { (cpId, label) ->
+                                DropdownMenuItem(
+                                    text = {
+                                        Text(
+                                            text = label,
+                                            fontSize = 12.sp,
+                                            color = if (defaultCodePage == cpId) Color(0xFF339AF0) else Color.White,
+                                            fontWeight = if (defaultCodePage == cpId) FontWeight.Bold else FontWeight.Normal
+                                        )
+                                    },
+                                    onClick = {
+                                        defaultCodePage = cpId
+                                        codePageMenuExpanded = false
+                                    }
+                                )
+                            }
+                        }
+                    }
+                }
+
+                Spacer(modifier = Modifier.height(12.dp))
+
+                // Verify TLS Certs
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.SpaceBetween
+                ) {
+                    Column(modifier = Modifier.weight(1f).padding(end = 12.dp)) {
+                        Text("Verify TLS Certificates", fontSize = 14.sp, fontWeight = FontWeight.SemiBold, color = Color.White)
+                        Text("Validate TLS certificates against system trust store.", fontSize = 12.sp, color = Color.LightGray)
+                    }
+                    Switch(
+                        checked = verifyCerts,
+                        onCheckedChange = { verifyCerts = it },
+                        colors = SwitchDefaults.colors(checkedThumbColor = Color.White, checkedTrackColor = Color(0xFF2B8A3E))
+                    )
+                }
+
+                Spacer(modifier = Modifier.height(16.dp))
+                HorizontalDivider(color = Color(0xFF2C2D30))
+                Spacer(modifier = Modifier.height(16.dp))
+
+                // SECTION 4: ENTRY ASSIST & MODES
+                Text("Entry Assist & Modes", fontSize = 13.sp, fontWeight = FontWeight.Bold, color = Color(0xFF339AF0))
+                Text("Document Mode word wrap, margins, audible bell, and operational locks matching j3270.", fontSize = 12.sp, color = Color.LightGray)
+                Spacer(modifier = Modifier.height(8.dp))
+
+                // Document Mode
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.SpaceBetween
+                ) {
+                    Column(modifier = Modifier.weight(1f).padding(end = 12.dp)) {
+                        Text("Document Mode (DOC)", fontSize = 14.sp, fontWeight = FontWeight.SemiBold, color = Color.White)
+                        Text("Enable word wrapping and margin tracking during text entry.", fontSize = 12.sp, color = Color.LightGray)
+                    }
+                    Switch(
+                        checked = entryAssistDocMode,
+                        onCheckedChange = { entryAssistDocMode = it },
+                        colors = SwitchDefaults.colors(checkedThumbColor = Color.White, checkedTrackColor = Color(0xFF2B8A3E))
+                    )
+                }
+
+                Spacer(modifier = Modifier.height(10.dp))
+
+                // Word Wrap
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.SpaceBetween
+                ) {
+                    Column(modifier = Modifier.weight(1f).padding(end = 12.dp)) {
+                        Text("Word Wrap (V)", fontSize = 14.sp, fontWeight = FontWeight.SemiBold, color = Color.White)
+                        Text("Automatically wrap partial words at the right margin.", fontSize = 12.sp, color = Color.LightGray)
+                    }
+                    Switch(
+                        checked = entryAssistWordWrap,
+                        onCheckedChange = { entryAssistWordWrap = it },
+                        colors = SwitchDefaults.colors(checkedThumbColor = Color.White, checkedTrackColor = Color(0xFF2B8A3E))
+                    )
+                }
+
+                Spacer(modifier = Modifier.height(10.dp))
+
+                // Margins (Left / Right)
+                Column(modifier = Modifier.fillMaxWidth()) {
+                    Text("Entry Assist Margins", fontSize = 14.sp, fontWeight = FontWeight.SemiBold, color = Color.White)
+                    Text("Left margin (1-80) and Right margin (1-80).", fontSize = 12.sp, color = Color.LightGray)
+                    Spacer(modifier = Modifier.height(6.dp))
+                    Row(
+                        modifier = Modifier.fillMaxWidth(),
+                        horizontalArrangement = Arrangement.spacedBy(8.dp)
+                    ) {
+                        OutlinedTextField(
+                            value = entryAssistStartColStr,
+                            onValueChange = { entryAssistStartColStr = it },
+                            label = { Text("Left Col (1-80)") },
+                            singleLine = true,
+                            modifier = Modifier.weight(1f),
+                            keyboardOptions = androidx.compose.foundation.text.KeyboardOptions(
+                                keyboardType = androidx.compose.ui.text.input.KeyboardType.Number
+                            )
+                        )
+                        OutlinedTextField(
+                            value = entryAssistEndColStr,
+                            onValueChange = { entryAssistEndColStr = it },
+                            label = { Text("Right Col (1-80)") },
+                            singleLine = true,
+                            modifier = Modifier.weight(1f),
+                            keyboardOptions = androidx.compose.foundation.text.KeyboardOptions(
+                                keyboardType = androidx.compose.ui.text.input.KeyboardType.Number
+                            )
+                        )
+                    }
+                }
+
+                Spacer(modifier = Modifier.height(10.dp))
+
+                // Audible EOL Bell
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.SpaceBetween
+                ) {
+                    Column(modifier = Modifier.weight(1f).padding(end = 12.dp)) {
+                        Text("Audible EOL Bell Warning", fontSize = 14.sp, fontWeight = FontWeight.SemiBold, color = Color.White)
+                        Text("Beep warning signal when typing reaches the bell column.", fontSize = 12.sp, color = Color.LightGray)
+                    }
+                    Switch(
+                        checked = entryAssistBell,
+                        onCheckedChange = { entryAssistBell = it },
+                        colors = SwitchDefaults.colors(checkedThumbColor = Color.White, checkedTrackColor = Color(0xFF2B8A3E))
+                    )
+                }
+
+                Spacer(modifier = Modifier.height(6.dp))
+
+                OutlinedTextField(
+                    value = entryAssistBellColStr,
+                    onValueChange = { entryAssistBellColStr = it },
+                    label = { Text("Bell Column (1-80)") },
+                    singleLine = true,
+                    modifier = Modifier.fillMaxWidth(),
+                    keyboardOptions = androidx.compose.foundation.text.KeyboardOptions(
+                        keyboardType = androidx.compose.ui.text.input.KeyboardType.Number
+                    )
+                )
+
+                Spacer(modifier = Modifier.height(10.dp))
+
+                // Tab Stops
+                OutlinedTextField(
+                    value = entryAssistTabStops,
+                    onValueChange = { entryAssistTabStops = it },
+                    label = { Text("Word Tab Stops") },
+                    placeholder = { Text("5,10,15,20,25,30,35,40,45,50,55,60,65,70,75") },
+                    singleLine = true,
+                    modifier = Modifier.fillMaxWidth()
+                )
+
+                Spacer(modifier = Modifier.height(10.dp))
+
+                // Operational Mode Toggles
+                // 1. Reset Insert on AID
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.SpaceBetween
+                ) {
+                    Column(modifier = Modifier.weight(1f).padding(end = 12.dp)) {
+                        Text("Reset Insert Mode on AID Key", fontSize = 14.sp, fontWeight = FontWeight.SemiBold, color = Color.White)
+                        Text("Automatically cancel insert mode upon Enter, PF, PA, or Clear.", fontSize = 12.sp, color = Color.LightGray)
+                    }
+                    Switch(
+                        checked = insertOffOnAid,
+                        onCheckedChange = { insertOffOnAid = it },
+                        colors = SwitchDefaults.colors(checkedThumbColor = Color.White, checkedTrackColor = Color(0xFF2B8A3E))
+                    )
+                }
+
+                Spacer(modifier = Modifier.height(10.dp))
+
+                // 2. Base 4-Color Override
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.SpaceBetween
+                ) {
+                    Column(modifier = Modifier.weight(1f).padding(end = 12.dp)) {
+                        Text("Base 4-Color Override Mode", fontSize = 14.sp, fontWeight = FontWeight.SemiBold, color = Color.White)
+                        Text("Force 3279 4-color mapping (green/white/red/turquoise), ignoring host extended colors.", fontSize = 12.sp, color = Color.LightGray)
+                    }
+                    Switch(
+                        checked = fourColorOverride,
+                        onCheckedChange = { fourColorOverride = it },
+                        colors = SwitchDefaults.colors(checkedThumbColor = Color.White, checkedTrackColor = Color(0xFF2B8A3E))
+                    )
+                }
+
+                Spacer(modifier = Modifier.height(10.dp))
+
+                // 3. Numeric Field Lock
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.SpaceBetween
+                ) {
+                    Column(modifier = Modifier.weight(1f).padding(end = 12.dp)) {
+                        Text("Numeric Field Lock (-NUMERIC)", fontSize = 14.sp, fontWeight = FontWeight.SemiBold, color = Color.White)
+                        Text("Inhibit keyboard if a non-numeric character is typed in a numeric-only field.", fontSize = 12.sp, color = Color.LightGray)
+                    }
+                    Switch(
+                        checked = numericFieldLock,
+                        onCheckedChange = { numericFieldLock = it },
+                        colors = SwitchDefaults.colors(checkedThumbColor = Color.White, checkedTrackColor = Color(0xFF2B8A3E))
+                    )
+                }
+
+                Spacer(modifier = Modifier.height(10.dp))
+
+                // 4. Auto-Skip
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.SpaceBetween
+                ) {
+                    Column(modifier = Modifier.weight(1f).padding(end = 12.dp)) {
+                        Text("Auto-Skip Across Fields", fontSize = 14.sp, fontWeight = FontWeight.SemiBold, color = Color.White)
+                        Text("Automatically advance cursor to next unprotected field when field is filled.", fontSize = 12.sp, color = Color.LightGray)
+                    }
+                    Switch(
+                        checked = autoSkipEnabled,
+                        onCheckedChange = { autoSkipEnabled = it },
+                        colors = SwitchDefaults.colors(checkedThumbColor = Color.White, checkedTrackColor = Color(0xFF2B8A3E))
+                    )
+                }
+
+                Spacer(modifier = Modifier.height(16.dp))
+                HorizontalDivider(color = Color(0xFF2C2D30))
+                Spacer(modifier = Modifier.height(16.dp))
+
+                // SECTION 5: INI CONFIGURATION BACKUP
+                Text("Configuration File (INI)", fontSize = 13.sp, fontWeight = FontWeight.Bold, color = Color(0xFF339AF0))
+                Text("Compatible with j3270 desktop INI configuration files.", fontSize = 12.sp, color = Color.LightGray)
+                Spacer(modifier = Modifier.height(8.dp))
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.spacedBy(8.dp)
+                ) {
+                    OutlinedButton(
+                        onClick = {
+                            val sw = java.io.StringWriter()
+                            haus.nightmare.a3270.storage.AppSettings.exportToIni(context, sw)
+                            val iniText = sw.toString()
+                            clipboardManager.setText(androidx.compose.ui.text.AnnotatedString(iniText))
+                            android.widget.Toast.makeText(context, "Exported INI copied to clipboard", android.widget.Toast.LENGTH_SHORT).show()
+                        },
+                        modifier = Modifier.weight(1f)
+                    ) {
+                        Text("Export to INI", fontSize = 12.sp)
+                    }
+                    OutlinedButton(
+                        onClick = { showImportDialog = true },
+                        modifier = Modifier.weight(1f)
+                    ) {
+                        Text("Import from INI", fontSize = 12.sp)
+                    }
+                }
+
+                Spacer(modifier = Modifier.height(24.dp))
+
+                // Action Buttons
+                Row(
+                    modifier = Modifier.fillMaxWidth(),
+                    horizontalArrangement = Arrangement.End
+                ) {
+                    TextButton(onClick = onDismiss) {
+                        Text("Cancel", color = Color.LightGray)
+                    }
+                    Spacer(modifier = Modifier.width(8.dp))
+                    Button(
+                        onClick = {
+                            val dRows = dynamicRowsStr.trim().toIntOrNull()?.coerceIn(24, 255) ?: 62
+                            val dCols = dynamicColsStr.trim().toIntOrNull()?.coerceIn(80, 255) ?: 160
+                            val eaStartCol = entryAssistStartColStr.trim().toIntOrNull()?.coerceIn(1, 80) ?: 1
+                            val eaEndCol = entryAssistEndColStr.trim().toIntOrNull()?.coerceIn(1, 80) ?: 80
+                            val eaBellCol = entryAssistBellColStr.trim().toIntOrNull()?.coerceIn(1, 80) ?: 75
+                            onSave(
+                                maskHiddenInput,
+                                cursorBlink,
+                                hapticFeedback,
+                                verifyCerts,
+                                defaultGraphicsMode,
+                                defaultCodePage,
+                                uiTheme,
+                                crosshairRuler,
+                                cursorStyle,
+                                blockSelectMode,
+                                startupBehavior,
+                                dRows,
+                                dCols,
+                                entryAssistDocMode,
+                                entryAssistWordWrap,
+                                eaStartCol,
+                                eaEndCol,
+                                entryAssistBell,
+                                eaBellCol,
+                                entryAssistTabStops,
+                                insertOffOnAid,
+                                fourColorOverride,
+                                numericFieldLock,
+                                autoSkipEnabled
+                            )
+                        },
+                        colors = ButtonDefaults.buttonColors(containerColor = Color(0xFF2B8A3E))
+                    ) {
+                        Text("Save", color = Color.White)
+                    }
+                }
+            }
+        }
+    }
+
+    if (showImportDialog) {
+        var importText by remember { mutableStateOf("") }
+        AlertDialog(
+            onDismissRequest = { showImportDialog = false },
+            title = { Text("Import INI Configuration") },
+            text = {
+                Column(verticalArrangement = Arrangement.spacedBy(8.dp)) {
+                    Text("Paste INI configuration content below:", fontSize = 12.sp)
+                    OutlinedTextField(
+                        value = importText,
+                        onValueChange = { importText = it },
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .height(180.dp),
+                        maxLines = 10
+                    )
+                }
+            },
+            confirmButton = {
+                TextButton(onClick = {
+                    showImportDialog = false
+                    if (importText.isNotBlank()) {
+                        try {
+                            haus.nightmare.a3270.storage.AppSettings.loadFromIni(context, java.io.StringReader(importText))
+                            uiTheme = haus.nightmare.a3270.storage.AppSettings.getUiTheme(context)
+                            crosshairRuler = haus.nightmare.a3270.storage.AppSettings.isCrosshairRulerEnabled(context)
+                            cursorStyle = haus.nightmare.a3270.storage.AppSettings.getCursorStyle(context)
+                            blockSelectMode = haus.nightmare.a3270.storage.AppSettings.isBlockSelectModeEnabled(context)
+                            startupBehavior = haus.nightmare.a3270.storage.AppSettings.getStartupBehavior(context).name
+                            dynamicRowsStr = haus.nightmare.a3270.storage.AppSettings.getDynamicRows(context).toString()
+                            dynamicColsStr = haus.nightmare.a3270.storage.AppSettings.getDynamicCols(context).toString()
+                            defaultCodePage = haus.nightmare.a3270.storage.AppSettings.getDefaultCodePage(context)
+                            defaultGraphicsMode = haus.nightmare.a3270.storage.AppSettings.getDefaultGraphicsMode(context)
+                            entryAssistDocMode = haus.nightmare.a3270.storage.AppSettings.getEntryAssistDocMode(context)
+                            entryAssistWordWrap = haus.nightmare.a3270.storage.AppSettings.getEntryAssistWordWrap(context)
+                            entryAssistStartColStr = haus.nightmare.a3270.storage.AppSettings.getEntryAssistStartCol(context).toString()
+                            entryAssistEndColStr = haus.nightmare.a3270.storage.AppSettings.getEntryAssistEndCol(context).toString()
+                            entryAssistBell = haus.nightmare.a3270.storage.AppSettings.getEntryAssistBell(context)
+                            entryAssistBellColStr = haus.nightmare.a3270.storage.AppSettings.getEntryAssistBellCol(context).toString()
+                            entryAssistTabStops = haus.nightmare.a3270.storage.AppSettings.getEntryAssistTabStops(context)
+                            insertOffOnAid = haus.nightmare.a3270.storage.AppSettings.getInsertOffOnAid(context)
+                            fourColorOverride = haus.nightmare.a3270.storage.AppSettings.getFourColorOverride(context)
+                            numericFieldLock = haus.nightmare.a3270.storage.AppSettings.getNumericFieldLock(context)
+                            autoSkipEnabled = haus.nightmare.a3270.storage.AppSettings.getAutoSkipEnabled(context)
+                            android.widget.Toast.makeText(context, "Settings imported from INI", android.widget.Toast.LENGTH_SHORT).show()
+                        } catch (e: Exception) {
+                            android.widget.Toast.makeText(context, "Error importing: ${e.message}", android.widget.Toast.LENGTH_LONG).show()
+                        }
+                    }
+                }) {
+                    Text("Import")
+                }
+            },
+            dismissButton = {
+                TextButton(onClick = { showImportDialog = false }) {
+                    Text("Cancel")
+                }
+            }
+        )
+    }
+}

src/main/java/haus/nightmare/a3270/ui/TerminalInputView.kt

@@ -1,4 +1,4 @@
-package org.pubvm.a3270.ui
+package haus.nightmare.a3270.ui
 
 import android.content.Context
 import android.text.InputType
@@ -8,7 +8,7 @@ import android.view.inputmethod.BaseInputConnection
 import android.view.inputmethod.EditorInfo
 import android.view.inputmethod.InputConnection
 import android.view.inputmethod.InputMethodManager
-import org.lib3270j.protocol.DS3270Constants.AID_ENTER
+import haus.nightmare.lib3270j.protocol.DS3270Constants.AID_ENTER
 
 /**
  * Custom InputConnection for Termux-style terminal keyboard interaction.
@@ -111,4 +111,10 @@ class TerminalInputView(context: Context) : View(context) {
         val imm = context.getSystemService(Context.INPUT_METHOD_SERVICE) as? InputMethodManager
         imm?.showSoftInput(this, InputMethodManager.SHOW_IMPLICIT)
     }
+
+    fun hideSoftKeyboard() {
+        clearFocus()
+        val imm = context.getSystemService(Context.INPUT_METHOD_SERVICE) as? InputMethodManager
+        imm?.hideSoftInputFromWindow(windowToken, 0)
+    }
 }

src/main/java/haus/nightmare/a3270/ui/TerminalView.kt

@@ -0,0 +1,774 @@
+package haus.nightmare.a3270.ui
+
+import android.graphics.Paint
+import android.graphics.Typeface
+import android.widget.Toast
+import androidx.compose.foundation.Canvas
+import androidx.compose.foundation.background
+import androidx.compose.foundation.gestures.awaitFirstDown
+import androidx.compose.foundation.layout.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.geometry.Size
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.nativeCanvas
+import androidx.compose.ui.input.pointer.pointerInput
+import androidx.compose.ui.platform.LocalClipboardManager
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.text.AnnotatedString
+import androidx.compose.ui.unit.DpOffset
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import kotlinx.coroutines.delay
+import haus.nightmare.lib3270j.protocol.DS3270Constants.*
+import haus.nightmare.lib3270j.screen.ExtendedAttribute
+import haus.nightmare.lib3270j.screen.ScreenBuffer
+
+// Standard 3279 Host Colors (16-color palette) aligned 1:1 with IBM Host On-Demand ColorRemapModel3270
+private val HOST_COLORS = arrayOf(
+    Color(0xFF000000), // 0: Neutral Black
+    Color(0xFF7890F0), // 1: Blue (0x7890F0 CUSTOMBLUE)
+    Color(0xFFFF0000), // 2: Red
+    Color(0xFFFF00FF), // 3: Pink
+    Color(0xFF00FF00), // 4: Green
+    Color(0xFF00FFFF), // 5: Turquoise / Cyan
+    Color(0xFFFFFF00), // 6: Yellow
+    Color(0xFFFFFFFF), // 7: Neutral White
+    Color(0xFF000000), // 8: Black
+    Color(0xFF000080), // 9: Deep Blue
+    Color(0xFFFFA200), // 10: Orange (0xFFFFA200)
+    Color(0xFF800080), // 11: Purple
+    Color(0xFF008000), // 12: Pale Green
+    Color(0xFF008080), // 13: Pale Turquoise
+    Color(0xFFA0A000), // 14: Mustard (0xFFA0A000)
+    Color(0xFFC0C0C0)  // 15: Grey (0xFFC0C0C0)
+)
+
+private val COLOR_BLACK = Color(0xFF0A0A0A)
+private val SELECTION_COLOR = Color(75, 110, 175, 102) // 40% alpha blend per HoD
+private val SEARCH_HIGHLIGHT_COLOR = Color(255, 215, 0, 120) // Gold per HoD
+private val CROSSHAIR_RULER_COLOR = Color(0, 255, 0, 102) // 40% alpha green per HoD
+
+@Composable
+fun TerminalView(
+    screenBuffer: ScreenBuffer?,
+    rows: Int,
+    cols: Int,
+    cursorAddr: Int,
+    screenVersion: Long,
+    programSymbolManager: haus.nightmare.lib3270j.graphics.ProgramSymbolManager? = null,
+    graphicsPlane: haus.nightmare.lib3270j.graphics.GraphicsPlane? = null,
+    gocaDecoder: haus.nightmare.lib3270j.graphics.GocaDecoder? = null,
+    isLightPenMode: Boolean = false,
+    maskHiddenFields: Boolean = true,
+    blinkCursor: Boolean = true,
+    crosshairRuler: Boolean = false,
+    cursorStyle: String = "BLOCK",
+    isInsertMode: Boolean = false,
+    blockSelectMode: Boolean = false,
+    fourColorOverride: Boolean = false,
+    searchHighlightAddr: Int = -1,
+    searchHighlightLen: Int = 0,
+    onTapAddress: (Int) -> Unit,
+    onLightPenSelect: ((Int) -> Unit)? = null,
+    onGraphicTouch: ((Int, Int, Int) -> Unit)? = null,
+    onPasteText: (String) -> Unit = {},
+    onPasteLineWrap: ((String, Int, Boolean) -> Unit)? = null,
+    modifier: Modifier = Modifier
+) {
+    val context = LocalContext.current
+    val clipboardManager = LocalClipboardManager.current
+    val density = LocalDensity.current
+
+    val currentScreenVersion by rememberUpdatedState(screenVersion)
+    val currentCursorAddr by rememberUpdatedState(cursorAddr)
+
+    var selectionStart by remember { mutableStateOf<Offset?>(null) }
+    var selectionEnd by remember { mutableStateOf<Offset?>(null) }
+    var showContextMenu by remember { mutableStateOf(false) }
+    var contextMenuOffset by remember { mutableStateOf(Offset.Zero) }
+    var showPasteWrapDialog by remember { mutableStateOf(false) }
+
+    // Blinking cursor state (~530ms interval matching j3270)
+    var cursorVisible by remember { mutableStateOf(true) }
+    LaunchedEffect(cursorAddr, blinkCursor) {
+        if (!blinkCursor) {
+            cursorVisible = true
+            return@LaunchedEffect
+        }
+        cursorVisible = true
+        while (true) {
+            delay(530L)
+            cursorVisible = !cursorVisible
+        }
+    }
+
+    // Text blinking timer (500ms cycle matching j3270)
+    var textBlinkVisible by remember { mutableStateOf(true) }
+    LaunchedEffect(Unit) {
+        while (true) {
+            delay(500L)
+            textBlinkVisible = !textBlinkVisible
+        }
+    }
+
+    Box(modifier = modifier.fillMaxSize()) {
+        Canvas(
+            modifier = Modifier
+                .fillMaxSize()
+                .background(COLOR_BLACK)
+                .pointerInput(cols, rows, isLightPenMode, gocaDecoder) {
+                    awaitPointerEventScope {
+                        while (true) {
+                            val down = awaitFirstDown(requireUnconsumed = false)
+                            val startTime = System.currentTimeMillis()
+                            val startPos = down.position
+                            var currentPos = startPos
+                            var isDragStarted = false
+                            val slop = viewConfiguration.touchSlop
+                            val isGraphicCursor = gocaDecoder != null && gocaDecoder.isGraphicsCursorActive
+
+                            while (true) {
+                                val event = awaitPointerEvent()
+                                val change = event.changes.firstOrNull { it.id == down.id } ?: break
+                                if (!change.pressed) {
+                                    break
+                                }
+                                currentPos = change.position
+                                val distance = (currentPos - startPos).getDistance()
+
+                                if (distance > slop && !isLightPenMode && !isGraphicCursor) {
+                                    if (!isDragStarted) {
+                                        isDragStarted = true
+                                        selectionStart = startPos
+                                        showContextMenu = false
+                                    }
+                                    selectionEnd = currentPos
+                                    change.consume()
+                                }
+                            }
+
+                            val duration = System.currentTimeMillis() - startTime
+                            val totalDistance = (currentPos - startPos).getDistance()
+
+                            if (isDragStarted) {
+                                // Drag completed: Keep selection box highlighted, DO NOT open context menu
+                                showContextMenu = false
+                            } else if (duration >= 600L && totalDistance <= slop && !isLightPenMode && !isGraphicCursor) {
+                                // Stationary Long Press (held >= 600ms without dragging) - only in normal alphanumeric mode
+                                contextMenuOffset = startPos
+                                showContextMenu = true
+                            } else if (totalDistance <= slop) {
+                                // Short Tap
+                                showContextMenu = false
+                                selectionStart = null
+                                selectionEnd = null
+                                val metrics = calculateGridMetrics(size.width.toFloat(), size.height.toFloat(), cols, rows)
+                                if (metrics.cellWidth > 0 && metrics.cellHeight > 0) {
+                                    val col = ((startPos.x - metrics.offsetX) / metrics.cellWidth).toInt().coerceIn(0, cols - 1)
+                                    val row = ((startPos.y - metrics.offsetY) / metrics.cellHeight).toInt().coerceIn(0, rows - 1)
+                                    val clickAddr = row * cols + col
+
+                                    if (isGraphicCursor) {
+                                        val gridW = metrics.gridWidth
+                                        val gridH = metrics.gridHeight
+                                        val gWidth = graphicsPlane?.canvasWidth ?: gridW.toInt()
+                                        val gHeight = graphicsPlane?.canvasHeight ?: gridH.toInt()
+                                        val px = if (gridW > 0 && gWidth > 0) (((startPos.x - metrics.offsetX) * gWidth) / gridW).toInt().coerceIn(0, gWidth - 1) else (startPos.x - metrics.offsetX).toInt()
+                                        val py = if (gridH > 0 && gHeight > 0) (((startPos.y - metrics.offsetY) * gHeight) / gridH).toInt().coerceIn(0, gHeight - 1) else (startPos.y - metrics.offsetY).toInt()
+                                        screenBuffer?.cursorAddress = clickAddr
+                                        onGraphicTouch?.invoke(clickAddr, px, py)
+                                    } else if (isLightPenMode) {
+                                        onLightPenSelect?.invoke(clickAddr)
+                                    } else {
+                                        var addr = clickAddr
+                                        val buf = screenBuffer
+                                        if (buf != null && buf.isFormatted) {
+                                            val faVal = buf.getFieldAttributeAt(addr)
+                                            if (faIsProtected(faVal.toInt() and 0xFF) || buf.getCell(addr).isFieldAttribute) {
+                                                addr = buf.findNextUnprotected(addr)
+                                            }
+                                        }
+                                        onTapAddress(addr)
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+        ) {
+            val version = currentScreenVersion
+            val activeCursorAddr = currentCursorAddr
+            if (version == -1L) return@Canvas
+
+            val metrics = calculateGridMetrics(size.width, size.height, cols, rows)
+            if (metrics.cellWidth <= 0f || metrics.cellHeight <= 0f) return@Canvas
+
+            val cellWidth = metrics.cellWidth
+            val cellHeight = metrics.cellHeight
+            val offsetX = metrics.offsetX
+            val offsetY = metrics.offsetY
+
+            val paint = Paint().apply {
+                isAntiAlias = true
+                typeface = Typeface.MONOSPACE
+                textAlign = Paint.Align.CENTER
+            }
+
+            // Calculate optimal font size ensuring characters fit cleanly in cell without crowding
+            val baseTextSize = cellHeight * 0.78f
+            paint.textSize = baseTextSize
+            val measuredW = paint.measureText("W")
+            if (measuredW > cellWidth * 0.85f && measuredW > 0f) {
+                paint.textSize = baseTextSize * (cellWidth * 0.85f / measuredW)
+            }
+
+            val buf = screenBuffer
+            val totalCells = rows * cols
+
+            var currentFA: Byte = 0
+            var currentFieldEa: ExtendedAttribute? = null
+
+            // Calculate selected cell rectangle range if drag selection active
+            var selMinRow = -1
+            var selMaxRow = -1
+            var selMinCol = -1
+            var selMaxCol = -1
+
+            val start = selectionStart
+            val end = selectionEnd
+            if (start != null && end != null && cellWidth > 0f && cellHeight > 0f) {
+                val startCol = ((start.x - offsetX) / cellWidth).toInt().coerceIn(0, cols - 1)
+                val startRow = ((start.y - offsetY) / cellHeight).toInt().coerceIn(0, rows - 1)
+                val endCol = ((end.x - offsetX) / cellWidth).toInt().coerceIn(0, cols - 1)
+                val endRow = ((end.y - offsetY) / cellHeight).toInt().coerceIn(0, rows - 1)
+
+                selMinRow = minOf(startRow, endRow)
+                selMaxRow = maxOf(startRow, endRow)
+                selMinCol = minOf(startCol, endCol)
+                selMaxCol = maxOf(startCol, endCol)
+            }
+
+            // 1. Draw Vector Graphics Plane under text if present
+            if (graphicsPlane != null && graphicsPlane.hasContent()) {
+                val gridW = metrics.gridWidth.toInt()
+                val gridH = metrics.gridHeight.toInt()
+                val gWidth = graphicsPlane.canvasWidth
+                val gHeight = graphicsPlane.canvasHeight
+                val rgb = graphicsPlane.rgbBuffer
+                if (gridW > 0 && gridH > 0 && rgb != null && gWidth > 0 && gHeight > 0) {
+                    val bmp = android.graphics.Bitmap.createBitmap(rgb, gWidth, gHeight, android.graphics.Bitmap.Config.ARGB_8888)
+                    drawContext.canvas.nativeCanvas.drawBitmap(
+                        bmp,
+                        null,
+                        android.graphics.RectF(offsetX, offsetY, offsetX + gridW.toFloat(), offsetY + gridH.toFloat()),
+                        null
+                    )
+                }
+            }
+
+            // 2. Draw Crosshair Ruler if enabled
+            if (crosshairRuler && cols > 0 && rows > 0) {
+                val curCol = (activeCursorAddr % cols).coerceIn(0, cols - 1)
+                val curRow = ((activeCursorAddr / cols) % rows).coerceIn(0, rows - 1)
+                val gridW = cols * cellWidth
+                val gridH = rows * cellHeight
+                val cx = offsetX + curCol * cellWidth
+                val cy = offsetY + curRow * cellHeight
+
+                drawRect(
+                    color = CROSSHAIR_RULER_COLOR,
+                    topLeft = Offset(offsetX, cy),
+                    size = Size(gridW, cellHeight)
+                )
+                drawRect(
+                    color = CROSSHAIR_RULER_COLOR,
+                    topLeft = Offset(cx, offsetY),
+                    size = Size(cellWidth, gridH)
+                )
+            }
+
+            for (r in 0 until rows) {
+                for (c in 0 until cols) {
+                    val addr = r * cols + c
+                    if (addr >= totalCells) break
+
+                    val left = offsetX + c * cellWidth
+                    val top = offsetY + r * cellHeight
+
+                    var charVal = ' '
+                    var fgColor: Color
+                    var bgColor = COLOR_BLACK
+                    var isBold = false
+                    var isUnderline = false
+                    var isReverse = false
+                    var isBlink = false
+                    var csVal = 0
+                    var ecVal = 0
+
+                    if (buf != null) {
+                        val ea = buf.getCell(addr)
+
+                        if (ea.isFieldAttribute) {
+                            currentFA = ea.fa
+                            currentFieldEa = ea
+                            continue
+                        }
+
+                        // Compute 3270 color and field intensity
+                        fgColor = getFgColorForAttribute(ea, currentFieldEa, currentFA, fourColorOverride)
+                        bgColor = getBgColorForAttribute(ea, currentFieldEa)
+
+                        csVal = if (ea.cs != 0.toByte()) (ea.cs.toInt() and 0xFF)
+                                else (currentFieldEa?.cs?.toInt()?.and(0xFF) ?: 0)
+                        ecVal = ea.ec.toInt() and 0xFF
+
+                        // Intensity
+                        if (faIsHigh(currentFA.toInt() and 0xFF)) {
+                            isBold = true
+                        }
+
+                        // Invisible fields (passwords / hidden inputs)
+                        if (faIsZero(currentFA.toInt() and 0xFF)) {
+                            if (maskHiddenFields && ea.ucs4 > ' ' && ea.ucs4.code != 0xFFFF) {
+                                charVal = '*'
+                            } else {
+                                // Blanks out character
+                                charVal = ' '
+                            }
+                        } else {
+                            // Normal visible character
+                            if (ea.ucs4 > ' ' && ea.ucs4.code != 0xFFFF) {
+                                charVal = ea.ucs4
+                            }
+                        }
+
+                        // Extended Graphic Rendition
+                        val gr = if (ea.gr != 0.toByte()) ea.gr else (currentFieldEa?.gr ?: 0)
+                        if (gr != 0.toByte()) {
+                            val grVal = gr.toInt() and 0xFF
+                            if ((grVal and GR_INTENSIFY) != 0) isBold = true
+                            if ((grVal and GR_UNDERLINE) != 0) isUnderline = true
+                            if ((grVal and GR_REVERSE) != 0) isReverse = true
+                            if ((grVal and GR_BLINK) != 0) isBlink = true
+                        }
+                    } else {
+                        fgColor = HOST_COLORS[HOST_COLOR_GREEN]
+                    }
+
+                    if (isReverse) {
+                        val tmp = fgColor
+                        fgColor = bgColor
+                        bgColor = tmp
+                    }
+
+                    if (bgColor != COLOR_BLACK && bgColor != Color.Transparent) {
+                        drawRect(
+                            color = bgColor,
+                            topLeft = Offset(left, top),
+                            size = Size(cellWidth, cellHeight)
+                        )
+                    }
+
+                    // Selection highlight (Block select vs Linear stream select)
+                    val isSelected = if (blockSelectMode) {
+                        r in selMinRow..selMaxRow && c in selMinCol..selMaxCol
+                    } else {
+                        if (selMinRow == -1 || selMaxRow == -1) false
+                        else if (selMinRow == selMaxRow) r == selMinRow && c in selMinCol..selMaxCol
+                        else if (r == selMinRow) c >= selMinCol
+                        else if (r == selMaxRow) c <= selMaxCol
+                        else r in (selMinRow + 1) until selMaxRow
+                    }
+
+                    val isSearchHighlighted = searchHighlightAddr >= 0 && searchHighlightLen > 0 &&
+                            addr >= searchHighlightAddr && addr < (searchHighlightAddr + searchHighlightLen)
+
+                    if (isSearchHighlighted) {
+                        drawRect(
+                            color = SEARCH_HIGHLIGHT_COLOR,
+                            topLeft = Offset(left, top),
+                            size = Size(cellWidth, cellHeight)
+                        )
+                    } else if (isSelected) {
+                        drawRect(
+                            color = SELECTION_COLOR,
+                            topLeft = Offset(left, top),
+                            size = Size(cellWidth, cellHeight)
+                        )
+                    }
+
+                    // Cursor indicator (respects blinking toggle & timer, cursor style, insert mode)
+                    if (addr == activeCursorAddr && !isSelected && cursorVisible) {
+                        val isUnderlineCursor = cursorStyle.equals("UNDERLINE", ignoreCase = true) || isInsertMode
+                        if (isUnderlineCursor) {
+                            val ulH = maxOf(4f, cellHeight / 4f)
+                            drawRect(
+                                color = Color(255, 255, 255, 180),
+                                topLeft = Offset(left, top + cellHeight - ulH),
+                                size = Size(cellWidth, ulH)
+                            )
+                        } else {
+                            drawRect(
+                                color = Color(255, 255, 255, 180),
+                                topLeft = Offset(left, top),
+                                size = Size(cellWidth, cellHeight)
+                            )
+                        }
+                    }
+
+                    // Draw Programmed Symbol (PS / APL) if defined
+                    var drawnAsPs = false
+                    if (csVal >= 0x40 && programSymbolManager != null) {
+                        val slot = programSymbolManager.getSymbol(csVal, ecVal)
+                        if (slot != null) {
+                            val symWidth = slot.width
+                            val symHeight = slot.height
+                            val rgbArray = slot.getRgbPixels(fgColor.toArgb(), bgColor.toArgb())
+                            if (rgbArray != null && symWidth > 0 && symHeight > 0) {
+                                val bmp = android.graphics.Bitmap.createBitmap(rgbArray, symWidth, symHeight, android.graphics.Bitmap.Config.ARGB_8888)
+                                drawContext.canvas.nativeCanvas.drawBitmap(
+                                    bmp,
+                                    null,
+                                    android.graphics.RectF(left, top, left + cellWidth, top + cellHeight),
+                                    null
+                                )
+                                drawnAsPs = true
+                            }
+                        }
+                    }
+
+                    val suppressText = isBlink && !textBlinkVisible
+                    if (!drawnAsPs && charVal != ' ' && !suppressText) {
+                        paint.color = fgColor.toArgb()
+                        paint.isFakeBoldText = isBold
+                        val fontMetrics = paint.fontMetrics
+                        val textX = left + cellWidth / 2f
+                        val textY = top + (cellHeight - fontMetrics.bottom + fontMetrics.top) / 2f - fontMetrics.top
+
+                        drawContext.canvas.nativeCanvas.drawText(
+                            charVal.toString(),
+                            textX,
+                            textY,
+                            paint
+                        )
+                    }
+
+                    if (isUnderline) {
+                        drawLine(
+                            color = fgColor,
+                            start = Offset(left, top + cellHeight - 2f),
+                            end = Offset(left + cellWidth, top + cellHeight - 2f),
+                            strokeWidth = 2f
+                        )
+                    }
+                }
+            }
+
+            // Draw Graphic Cursor if active in GOCA or GraphicsPlane
+            val isGraphicCursorActive = (gocaDecoder != null && gocaDecoder.isGraphicsCursorActive) ||
+                    (graphicsPlane != null && graphicsPlane.isGraphicCursorAttached)
+            if (isGraphicCursorActive && graphicsPlane != null) {
+                val gocaX = if (gocaDecoder != null && gocaDecoder.isGraphicsCursorActive) gocaDecoder.graphicCursorX else graphicsPlane.graphicCursorX
+                val gocaY = if (gocaDecoder != null && gocaDecoder.isGraphicsCursorActive) gocaDecoder.graphicCursorY else graphicsPlane.graphicCursorY
+                val canvasPx = graphicsPlane.mapX(gocaX)
+                val canvasPy = graphicsPlane.mapY(gocaY)
+                val gridW = metrics.gridWidth
+                val gridH = metrics.gridHeight
+                val gWidth = graphicsPlane.canvasWidth.toFloat()
+                val gHeight = graphicsPlane.canvasHeight.toFloat()
+                val px = offsetX + if (gWidth > 0) (canvasPx.toFloat() * gridW / gWidth) else canvasPx.toFloat()
+                val py = offsetY + if (gHeight > 0) (canvasPy.toFloat() * gridH / gHeight) else canvasPy.toFloat()
+
+                val shape = graphicsPlane.hodCursorShape
+                if (shape == 2) {
+                    // Box cursor
+                    drawRect(
+                        color = Color.White,
+                        topLeft = Offset(px - 6f, py - 6f),
+                        size = Size(12f, 12f),
+                        style = androidx.compose.ui.graphics.drawscope.Stroke(width = 2f)
+                    )
+                } else {
+                    // Crosshair cursor
+                    drawLine(
+                        color = Color.White,
+                        start = Offset(px - 10f, py),
+                        end = Offset(px + 10f, py),
+                        strokeWidth = 2f
+                    )
+                    drawLine(
+                        color = Color.White,
+                        start = Offset(px, py - 10f),
+                        end = Offset(px, py + 10f),
+                        strokeWidth = 2f
+                    )
+                }
+            }
+        }
+
+        // Context Menu Popup
+        DropdownMenu(
+            expanded = showContextMenu,
+            onDismissRequest = { showContextMenu = false },
+            offset = DpOffset(
+                x = (contextMenuOffset.x / density.density).dp,
+                y = (contextMenuOffset.y / density.density).dp
+            )
+        ) {
+            val hasSelection = selectionStart != null && selectionEnd != null
+            if (hasSelection) {
+                DropdownMenuItem(
+                    text = { Text("Copy Selection") },
+                    onClick = {
+                        showContextMenu = false
+                        copySelection(selectionStart, selectionEnd, screenBuffer, rows, cols, clipboardManager, context, blockSelectMode)
+                    }
+                )
+                DropdownMenuItem(
+                    text = { Text("Clear Selection") },
+                    onClick = {
+                        showContextMenu = false
+                        selectionStart = null
+                        selectionEnd = null
+                    }
+                )
+            } else {
+                DropdownMenuItem(
+                    text = { Text("Select All") },
+                    onClick = {
+                        showContextMenu = false
+                        selectionStart = Offset(0f, 0f)
+                        selectionEnd = Offset(100000f, 100000f)
+                    }
+                )
+            }
+
+            DropdownMenuItem(
+                text = { Text("Paste") },
+                onClick = {
+                    showContextMenu = false
+                    val clipText = clipboardManager.getText()?.text
+                    if (!clipText.isNullOrEmpty()) {
+                        onPasteText(clipText)
+                        Toast.makeText(context, "Pasted text from clipboard", Toast.LENGTH_SHORT).show()
+                    } else {
+                        Toast.makeText(context, "Clipboard is empty", Toast.LENGTH_SHORT).show()
+                    }
+                }
+            )
+
+            DropdownMenuItem(
+                text = { Text("Paste with Line Wrap...") },
+                onClick = {
+                    showContextMenu = false
+                    showPasteWrapDialog = true
+                }
+            )
+        }
+
+        if (showPasteWrapDialog) {
+            var marginText by remember { mutableStateOf(cols.toString()) }
+            var wordWrap by remember { mutableStateOf(true) }
+
+            AlertDialog(
+                onDismissRequest = { showPasteWrapDialog = false },
+                title = { Text("Paste with Line Wrap") },
+                text = {
+                    Column(verticalArrangement = Arrangement.spacedBy(8.dp)) {
+                        Text("Wrap text at column (1-$cols, 0 = no wrap):", fontSize = 13.sp)
+                        OutlinedTextField(
+                            value = marginText,
+                            onValueChange = { marginText = it },
+                            singleLine = true,
+                            keyboardOptions = androidx.compose.foundation.text.KeyboardOptions(
+                                keyboardType = androidx.compose.ui.text.input.KeyboardType.Number
+                            )
+                        )
+                        Row(verticalAlignment = Alignment.CenterVertically) {
+                            Checkbox(checked = wordWrap, onCheckedChange = { wordWrap = it })
+                            Spacer(modifier = Modifier.width(4.dp))
+                            Text("Word wrap lines")
+                        }
+                    }
+                },
+                confirmButton = {
+                    TextButton(onClick = {
+                        showPasteWrapDialog = false
+                        val clipText = clipboardManager.getText()?.text
+                        if (!clipText.isNullOrEmpty()) {
+                            val margin = marginText.trim().toIntOrNull() ?: cols
+                            if (onPasteLineWrap != null) {
+                                onPasteLineWrap(clipText, margin, wordWrap)
+                            } else {
+                                onPasteText(clipText)
+                            }
+                        } else {
+                            Toast.makeText(context, "Clipboard is empty", Toast.LENGTH_SHORT).show()
+                        }
+                    }) {
+                        Text("Paste")
+                    }
+                },
+                dismissButton = {
+                    TextButton(onClick = { showPasteWrapDialog = false }) {
+                        Text("Cancel")
+                    }
+                }
+            )
+        }
+    }
+}
+
+data class TerminalGridMetrics(
+    val cellWidth: Float,
+    val cellHeight: Float,
+    val gridWidth: Float,
+    val gridHeight: Float,
+    val offsetX: Float,
+    val offsetY: Float
+)
+
+fun calculateGridMetrics(
+    viewWidth: Float,
+    viewHeight: Float,
+    cols: Int,
+    rows: Int
+): TerminalGridMetrics {
+    if (viewWidth <= 0f || viewHeight <= 0f || cols <= 0 || rows <= 0) {
+        return TerminalGridMetrics(0f, 0f, 0f, 0f, 0f, 0f)
+    }
+
+    val rawCellW = viewWidth / cols
+    val rawCellH = viewHeight / rows
+    val currentRatio = rawCellW / rawCellH
+
+    // Target terminal cell aspect ratio is roughly 0.50 to 0.60 (width / height)
+    val targetMinRatio = 0.48f
+    val targetMaxRatio = 0.60f
+
+    val cellW: Float
+    val cellH: Float
+
+    if (currentRatio > targetMaxRatio) {
+        // Screen is wider than ideal aspect ratio -> clamp width, pillarbox (equal blank bars left/right)
+        cellH = rawCellH
+        cellW = rawCellH * targetMaxRatio
+    } else if (currentRatio < targetMinRatio) {
+        // Screen is taller than ideal aspect ratio -> clamp height, letterbox (equal blank bars top/bottom)
+        cellW = rawCellW
+        cellH = rawCellW / targetMinRatio
+    } else {
+        cellW = rawCellW
+        cellH = rawCellH
+    }
+
+    val gridW = cols * cellW
+    val gridH = rows * cellH
+    val offX = (viewWidth - gridW) / 2f
+    val offY = (viewHeight - gridH) / 2f
+
+    return TerminalGridMetrics(cellW, cellH, gridW, gridH, offX, offY)
+}
+
+private fun copySelection(
+    start: Offset?,
+    end: Offset?,
+    screenBuffer: ScreenBuffer?,
+    rows: Int,
+    cols: Int,
+    clipboardManager: androidx.compose.ui.platform.ClipboardManager,
+    context: android.content.Context,
+    blockSelectMode: Boolean = false
+) {
+    if (start != null && end != null && screenBuffer != null && cols > 0 && rows > 0) {
+        val displayMetrics = context.resources.displayMetrics
+        val viewW = displayMetrics.widthPixels.toFloat()
+        val viewH = displayMetrics.heightPixels.toFloat()
+        val metrics = calculateGridMetrics(viewW, viewH, cols, rows)
+        if (metrics.cellWidth <= 0f || metrics.cellHeight <= 0f) return
+
+        val startCol = ((start.x - metrics.offsetX) / metrics.cellWidth).toInt().coerceIn(0, cols - 1)
+        val startRow = ((start.y - metrics.offsetY) / metrics.cellHeight).toInt().coerceIn(0, rows - 1)
+        val endCol = ((end.x - metrics.offsetX) / metrics.cellWidth).toInt().coerceIn(0, cols - 1)
+        val endRow = ((end.y - metrics.offsetY) / metrics.cellHeight).toInt().coerceIn(0, rows - 1)
+
+        val minRow = minOf(startRow, endRow)
+        val maxRow = maxOf(startRow, endRow)
+        val minCol = minOf(startCol, endCol)
+        val maxCol = maxOf(startCol, endCol)
+
+        val sb = StringBuilder()
+        for (r in minRow..maxRow) {
+            val line = StringBuilder()
+            val colStart = if (blockSelectMode) minCol else (if (r == minRow) minCol else 0)
+            val colEnd = if (blockSelectMode) maxCol else (if (r == maxRow) maxCol else cols - 1)
+            for (c in colStart..colEnd) {
+                val addr = r * cols + c
+                if (addr < (rows * cols)) {
+                    val cell = screenBuffer.getCell(addr)
+                    if (cell != null && !cell.isFieldAttribute && cell.ucs4 > ' ' && cell.ucs4.code != 0xFFFF) {
+                        line.append(cell.ucs4)
+                    } else {
+                        line.append(' ')
+                    }
+                }
+            }
+            sb.append(line.toString().trimEnd()).append('\n')
+        }
+        val textToCopy = sb.toString().trimEnd()
+        if (textToCopy.isNotBlank()) {
+            clipboardManager.setText(AnnotatedString(textToCopy))
+            Toast.makeText(context, "Copied selection to clipboard", Toast.LENGTH_SHORT).show()
+        }
+    }
+}
+
+internal fun getFgColorForAttribute(
+    ea: ExtendedAttribute,
+    currentFieldEa: ExtendedAttribute?,
+    currentFA: Byte,
+    fourColorOverride: Boolean = false
+): Color {
+    if (!fourColorOverride) {
+        val fg = if (ea.fg != 0.toByte()) (ea.fg.toInt() and 0xFF)
+                 else if (currentFieldEa != null && currentFieldEa.fg != 0.toByte()) (currentFieldEa.fg.toInt() and 0xFF)
+                 else 0
+
+        if (fg in 0xf0..0xff) {
+            return HOST_COLORS[fg - 0xf0]
+        }
+    }
+    val fa = currentFA.toInt() and 0xFF
+    return if (faIsProtected(fa)) {
+        if (faIsHigh(fa)) HOST_COLORS[HOST_COLOR_WHITE] else HOST_COLORS[HOST_COLOR_TURQUOISE]
+    } else {
+        if (faIsHigh(fa)) HOST_COLORS[HOST_COLOR_RED] else HOST_COLORS[HOST_COLOR_GREEN]
+    }
+}
+
+private fun getBgColorForAttribute(ea: ExtendedAttribute, currentFieldEa: ExtendedAttribute?): Color {
+    val bg = if (ea.bg != 0.toByte()) (ea.bg.toInt() and 0xFF)
+             else if (currentFieldEa != null && currentFieldEa.bg != 0.toByte()) (currentFieldEa.bg.toInt() and 0xFF)
+             else 0
+
+    if (bg in 0xf0..0xff) {
+        val idx = bg - 0xf0
+        if (idx == HOST_COLOR_NEUTRAL_BLACK || idx == HOST_COLOR_BLACK) {
+            return COLOR_BLACK
+        }
+        return HOST_COLORS[idx]
+    }
+    return COLOR_BLACK
+}
+
+private fun Color.toArgb(): Int {
+    return (alpha * 255).toInt() shl 24 or
+           ((red * 255).toInt() shl 16) or
+           ((green * 255).toInt() shl 8) or
+           (blue * 255).toInt()
+}

src/main/java/haus/nightmare/a3270/ui/UntrustedCertificateDialog.kt

@@ -1,4 +1,4 @@
-package org.pubvm.a3270.ui
+package haus.nightmare.a3270.ui
 
 import androidx.compose.foundation.background
 import androidx.compose.foundation.border

src/main/java/org/pubvm/a3270/MainActivity.kt

@@ -1,416 +0,0 @@
-package org.pubvm.a3270
-
-import android.content.pm.PackageManager
-import android.os.Build
-import android.os.Bundle
-import android.view.KeyEvent
-import android.widget.Toast
-import androidx.activity.ComponentActivity
-import androidx.activity.compose.setContent
-import androidx.activity.viewModels
-import androidx.compose.foundation.background
-import androidx.compose.foundation.layout.*
-import androidx.compose.material3.*
-import androidx.compose.runtime.*
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.platform.LocalContext
-import androidx.compose.ui.platform.LocalLifecycleOwner
-import androidx.compose.ui.unit.dp
-import androidx.compose.ui.viewinterop.AndroidView
-import androidx.core.view.WindowCompat
-import androidx.lifecycle.Lifecycle
-import androidx.lifecycle.LifecycleEventObserver
-import org.lib3270j.protocol.DS3270Constants.AID_ENTER
-import org.pubvm.a3270.service.TerminalService
-import org.pubvm.a3270.storage.HostStorage
-import org.pubvm.a3270.ui.ConnectDialog
-import org.pubvm.a3270.ui.FileTransferDialog
-import org.pubvm.a3270.ui.OiaStatusBar
-import org.pubvm.a3270.ui.SettingsDialog
-import org.pubvm.a3270.ui.TerminalInputView
-import org.pubvm.a3270.ui.TerminalView
-import org.pubvm.a3270.ui.TwoRowKeyBar
-
-import org.pubvm.a3270.ui.UntrustedCertificateDialog
-
-class MainActivity : ComponentActivity() {
-
-    companion object {
-        init {
-            val rootLogger = java.util.logging.Logger.getLogger("")
-            rootLogger.level = java.util.logging.Level.ALL
-            for (h in rootLogger.handlers) {
-                rootLogger.removeHandler(h)
-            }
-            rootLogger.addHandler(object : java.util.logging.Handler() {
-                override fun publish(record: java.util.logging.LogRecord?) {
-                    if (record == null) return
-                    val msg = record.message ?: ""
-                    val tag = "a3270-" + (record.loggerName?.substringAfterLast('.') ?: "lib3270j")
-                    when {
-                        record.level.intValue() >= java.util.logging.Level.SEVERE.intValue() ->
-                            android.util.Log.e(tag, msg, record.thrown)
-                        record.level.intValue() >= java.util.logging.Level.WARNING.intValue() ->
-                            android.util.Log.w(tag, msg, record.thrown)
-                        record.level.intValue() >= java.util.logging.Level.INFO.intValue() ->
-                            android.util.Log.i(tag, msg, record.thrown)
-                        else ->
-                            android.util.Log.d(tag, msg, record.thrown)
-                    }
-                }
-                override fun flush() {}
-                override fun close() {}
-            })
-        }
-    }
-
-    private val viewModel: TerminalViewModel by viewModels()
-    private val isShiftPressedState = mutableStateOf(false)
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-
-        WindowCompat.setDecorFitsSystemWindows(window, false)
-
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
-            if (checkSelfPermission(android.Manifest.permission.POST_NOTIFICATIONS)
-                != PackageManager.PERMISSION_GRANTED) {
-                requestPermissions(arrayOf(android.Manifest.permission.POST_NOTIFICATIONS), 1001)
-            }
-        }
-
-        setContent {
-            MaterialTheme(
-                colorScheme = darkColorScheme(
-                    background = Color.Black,
-                    surface = Color(0xFF1E1E1E),
-                    primary = Color(0xFF339AF0)
-                )
-            ) {
-                MainScreen(
-                    viewModel = viewModel,
-                    isShiftPressed = isShiftPressedState.value,
-                    onClearShift = { isShiftPressedState.value = false }
-                )
-            }
-        }
-    }
-
-    override fun dispatchKeyEvent(event: KeyEvent): Boolean {
-        val shift = event.isShiftPressed || (event.metaState and KeyEvent.META_SHIFT_ON != 0)
-        if (isShiftPressedState.value != shift) {
-            isShiftPressedState.value = shift
-        }
-
-        if (event.action == KeyEvent.ACTION_DOWN) {
-            val keyCode = event.keyCode
-            if (keyCode in KeyEvent.KEYCODE_F1..KeyEvent.KEYCODE_F12) {
-                val fNum = keyCode - KeyEvent.KEYCODE_F1 + 1
-                val pfNum = if (shift) fNum + 12 else fNum
-                val pfAids = intArrayOf(
-                    org.lib3270j.protocol.DS3270Constants.AID_PF1, org.lib3270j.protocol.DS3270Constants.AID_PF2,
-                    org.lib3270j.protocol.DS3270Constants.AID_PF3, org.lib3270j.protocol.DS3270Constants.AID_PF4,
-                    org.lib3270j.protocol.DS3270Constants.AID_PF5, org.lib3270j.protocol.DS3270Constants.AID_PF6,
-                    org.lib3270j.protocol.DS3270Constants.AID_PF7, org.lib3270j.protocol.DS3270Constants.AID_PF8,
-                    org.lib3270j.protocol.DS3270Constants.AID_PF9, org.lib3270j.protocol.DS3270Constants.AID_PF10,
-                    org.lib3270j.protocol.DS3270Constants.AID_PF11, org.lib3270j.protocol.DS3270Constants.AID_PF12,
-                    org.lib3270j.protocol.DS3270Constants.AID_PF13, org.lib3270j.protocol.DS3270Constants.AID_PF14,
-                    org.lib3270j.protocol.DS3270Constants.AID_PF15, org.lib3270j.protocol.DS3270Constants.AID_PF16,
-                    org.lib3270j.protocol.DS3270Constants.AID_PF17, org.lib3270j.protocol.DS3270Constants.AID_PF18,
-                    org.lib3270j.protocol.DS3270Constants.AID_PF19, org.lib3270j.protocol.DS3270Constants.AID_PF20,
-                    org.lib3270j.protocol.DS3270Constants.AID_PF21, org.lib3270j.protocol.DS3270Constants.AID_PF22,
-                    org.lib3270j.protocol.DS3270Constants.AID_PF23, org.lib3270j.protocol.DS3270Constants.AID_PF24
-                )
-                viewModel.sendAid(pfAids[pfNum - 1])
-                if (shift) {
-                    isShiftPressedState.value = false
-                }
-                return true
-            } else if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) {
-                viewModel.cursorLeft()
-                return true
-            } else if (keyCode == KeyEvent.KEYCODE_DPAD_UP) {
-                viewModel.cursorUp()
-                return true
-            } else if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN) {
-                viewModel.cursorDown()
-                return true
-            } else if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT) {
-                viewModel.cursorRight()
-                return true
-            } else if (keyCode == KeyEvent.KEYCODE_ENTER || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER) {
-                viewModel.sendAid(AID_ENTER)
-                return true
-            } else if (keyCode == KeyEvent.KEYCODE_TAB) {
-                if (event.isShiftPressed) {
-                    viewModel.backTab()
-                } else {
-                    viewModel.tab()
-                }
-                return true
-            } else if (keyCode == KeyEvent.KEYCODE_DEL) {
-                viewModel.backspace()
-                return true
-            } else if (keyCode == KeyEvent.KEYCODE_ESCAPE) {
-                viewModel.resetKeyboard()
-                return true
-            }
-        }
-        return super.dispatchKeyEvent(event)
-    }
-}
-
-@Composable
-fun MainScreen(
-    viewModel: TerminalViewModel,
-    isShiftPressed: Boolean = false,
-    onClearShift: () -> Unit = {}
-) {
-    val context = LocalContext.current
-    val connectionState by viewModel.connectionState.collectAsState()
-    val screenBuffer by viewModel.screenBuffer.collectAsState()
-    val rows by viewModel.rows.collectAsState()
-    val cols by viewModel.cols.collectAsState()
-    val cursorAddr by viewModel.cursorAddress.collectAsState()
-    val oiaText by viewModel.oiaText.collectAsState()
-    val isKeyboardLocked by viewModel.isKeyboardLocked.collectAsState()
-    val screenVersion by viewModel.screenVersion.collectAsState()
-    val maskHiddenInput by viewModel.maskHiddenInput.collectAsState()
-    val cursorBlink by viewModel.cursorBlink.collectAsState()
-    val hapticFeedback by viewModel.hapticFeedback.collectAsState()
-    val verifyCerts by viewModel.verifyCerts.collectAsState()
-    val defaultGraphicsMode by viewModel.defaultGraphicsMode.collectAsState()
-    val isTlsActive by viewModel.isTlsActive.collectAsState()
-    val isTlsVerified by viewModel.isTlsVerified.collectAsState()
-    val untrustedCertPrompt by viewModel.untrustedCertPrompt.collectAsState()
-    val ftState by viewModel.ftState.collectAsState()
-
-    var showConnectDialog by remember { mutableStateOf(false) }
-    var showFtDialog by remember { mutableStateOf(false) }
-    var showSettingsDialog by remember { mutableStateOf(false) }
-
-    var terminalInputViewRef by remember { mutableStateOf<TerminalInputView?>(null) }
-
-    val lifecycleOwner = LocalLifecycleOwner.current
-    DisposableEffect(lifecycleOwner) {
-        val observer = LifecycleEventObserver { _, event ->
-            if (event == Lifecycle.Event.ON_STOP) {
-                viewModel.isAppInBackground = true
-            } else if (event == Lifecycle.Event.ON_START) {
-                viewModel.isAppInBackground = false
-            }
-        }
-        lifecycleOwner.lifecycle.addObserver(observer)
-        onDispose {
-            lifecycleOwner.lifecycle.removeObserver(observer)
-        }
-    }
-
-    LaunchedEffect(Unit) {
-        val autoHost = HostStorage.getAutoConnectHost(context)
-        if (autoHost != null && !connectionState.isConnected()) {
-            viewModel.connect(
-                autoHost.host,
-                autoHost.port,
-                autoHost.model,
-                autoHost.luName,
-                autoHost.hostType,
-                autoHost.useTls,
-                autoHost.tlsVerifyCert,
-                autoHost.graphicsMode
-            )
-        }
-    }
-
-    LaunchedEffect(connectionState) {
-        if (connectionState.isConnected()) {
-            val activeHost = viewModel.currentHost.ifBlank { "Mainframe" }
-            TerminalService.start(context, activeHost)
-        } else {
-            TerminalService.stop(context)
-        }
-    }
-
-    Box(
-        modifier = Modifier
-            .fillMaxSize()
-            .background(Color.Black)
-            .windowInsetsPadding(WindowInsets.systemBars)
-            .imePadding()
-    ) {
-        Column(
-            modifier = Modifier.fillMaxSize()
-        ) {
-            // Main 3270 Terminal Screen View
-            TerminalView(
-                screenBuffer = screenBuffer,
-                rows = rows,
-                cols = cols,
-                cursorAddr = cursorAddr,
-                screenVersion = screenVersion,
-                programSymbolManager = viewModel.getClient()?.programSymbolManager,
-                graphicsPlane = viewModel.getClient()?.graphicsPlane,
-                maskHiddenFields = maskHiddenInput,
-                blinkCursor = cursorBlink,
-                onTapAddress = { addr ->
-                    viewModel.setCursor(addr)
-                    terminalInputViewRef?.showSoftKeyboard()
-                },
-                onPasteText = { text ->
-                    viewModel.pasteString(text)
-                },
-                modifier = Modifier.weight(1f)
-            )
-
-            // Termux-Style Native Input Connection View (Permanent Number Row, No Mode Reset, Lock Support)
-            AndroidView(
-                factory = { ctx ->
-                    TerminalInputView(ctx).apply {
-                        onInputText = { text ->
-                            viewModel.typeString(text)
-                            onClearShift()
-                        }
-                        onSendAid = { aid ->
-                            viewModel.sendAid(aid)
-                        }
-                        onBackspace = {
-                            viewModel.backspace()
-                            onClearShift()
-                        }
-                        onTab = {
-                            viewModel.tab()
-                        }
-                        onBackTab = {
-                            viewModel.backTab()
-                        }
-                        terminalInputViewRef = this
-                    }
-                },
-                update = { inputView ->
-                    terminalInputViewRef = inputView
-                },
-                modifier = Modifier.size(1.dp)
-            )
-
-            // Two Button Rows at the bottom (Row 1: System/Actions/Nav, Row 2: PF1-PF24)
-            TwoRowKeyBar(
-                connectionState = connectionState,
-                isShiftPressed = isShiftPressed,
-                hapticFeedbackEnabled = hapticFeedback,
-                onClearShift = onClearShift,
-                onConnectClick = { showConnectDialog = true },
-                onDisconnectClick = { viewModel.disconnect() },
-                onFtClick = { showFtDialog = true },
-                onSettingsClick = { showSettingsDialog = true },
-                onSendAid = { aid ->
-                    viewModel.sendAid(aid)
-                    terminalInputViewRef?.showSoftKeyboard()
-                },
-                onReset = {
-                    viewModel.resetKeyboard()
-                    terminalInputViewRef?.showSoftKeyboard()
-                },
-                onTab = {
-                    viewModel.tab()
-                    terminalInputViewRef?.showSoftKeyboard()
-                },
-                onBackTab = {
-                    viewModel.backTab()
-                    terminalInputViewRef?.showSoftKeyboard()
-                },
-                onCursorLeft = {
-                    viewModel.cursorLeft()
-                    terminalInputViewRef?.showSoftKeyboard()
-                },
-                onCursorUp = {
-                    viewModel.cursorUp()
-                    terminalInputViewRef?.showSoftKeyboard()
-                },
-                onCursorDown = {
-                    viewModel.cursorDown()
-                    terminalInputViewRef?.showSoftKeyboard()
-                },
-                onCursorRight = {
-                    viewModel.cursorRight()
-                    terminalInputViewRef?.showSoftKeyboard()
-                }
-            )
-
-            // OIA Status Bar
-            OiaStatusBar(
-                connectionState = connectionState,
-                currentHost = viewModel.currentHost,
-                isKeyboardLocked = isKeyboardLocked,
-                oiaText = oiaText,
-                cursorAddr = cursorAddr,
-                rows = rows,
-                cols = cols,
-                isTls = isTlsActive,
-                isTlsVerified = isTlsVerified,
-                graphicsMode = defaultGraphicsMode
-            )
-        }
-    }
-
-    if (showConnectDialog) {
-        ConnectDialog(
-            onDismiss = { showConnectDialog = false },
-            onConnect = { host, port, model, luName, hostType, useTls, tlsVerifyCert, graphicsMode ->
-                showConnectDialog = false
-                viewModel.connect(host, port, model, luName, hostType, useTls, tlsVerifyCert, graphicsMode)
-                terminalInputViewRef?.showSoftKeyboard()
-            }
-        )
-    }
-
-    if (showFtDialog) {
-        FileTransferDialog(
-            initialHostType = viewModel.activeHostType,
-            ftProgressState = ftState,
-            onDismiss = { showFtDialog = false },
-            onStartTransfer = { config ->
-                viewModel.startFileTransfer(config) { error ->
-                    if (error != null) {
-                        Toast.makeText(context, error, Toast.LENGTH_LONG).show()
-                    }
-                }
-            },
-            onCancelTransfer = {
-                viewModel.cancelFileTransfer()
-            }
-        )
-    }
-
-    if (showSettingsDialog) {
-        SettingsDialog(
-            initialMaskHiddenInput = maskHiddenInput,
-            initialCursorBlink = cursorBlink,
-            initialHapticFeedback = hapticFeedback,
-            initialVerifyCerts = verifyCerts,
-            initialDefaultGraphicsMode = defaultGraphicsMode,
-            onDismiss = { showSettingsDialog = false },
-            onSave = { mask, blink, haptic, verify, gfx ->
-                showSettingsDialog = false
-                viewModel.updateSettings(mask, blink, haptic, verify, gfx)
-                terminalInputViewRef?.showSoftKeyboard()
-            }
-        )
-    }
-
-    val prompt = untrustedCertPrompt
-    if (prompt != null) {
-        UntrustedCertificateDialog(
-            host = prompt.host,
-            port = prompt.port,
-            chain = prompt.chain,
-            exception = prompt.exception,
-            onAccept = {
-                viewModel.resolveUntrustedCert(true)
-            },
-            onReject = {
-                viewModel.resolveUntrustedCert(false)
-            }
-        )
-    }
-}

src/main/java/org/pubvm/a3270/TerminalViewModel.kt

@@ -1,658 +0,0 @@
-package org.pubvm.a3270
-
-import android.app.Application
-import androidx.lifecycle.AndroidViewModel
-import androidx.lifecycle.viewModelScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.asCoroutineDispatcher
-import kotlinx.coroutines.channels.Channel
-import kotlinx.coroutines.flow.MutableStateFlow
-import kotlinx.coroutines.flow.StateFlow
-import kotlinx.coroutines.flow.asStateFlow
-import kotlinx.coroutines.launch
-import kotlinx.coroutines.withContext
-import org.lib3270j.ConnectionConfig
-import org.lib3270j.ConnectionState
-import org.lib3270j.Telnet3270Client
-import org.lib3270j.TerminalModel
-import org.lib3270j.ft.FTConfig
-import org.lib3270j.listener.ConnectionListener
-import org.lib3270j.listener.ScreenUpdateListener
-import org.lib3270j.protocol.DS3270Constants.AID_ENTER
-import org.lib3270j.protocol.DS3270Constants.faIsProtected
-import org.lib3270j.screen.ScreenBuffer
-import org.pubvm.a3270.ft.FileTransfer
-import org.pubvm.a3270.service.TerminalService
-import org.pubvm.a3270.storage.AppSettings
-import java.io.File
-import java.util.concurrent.Executors
-import java.util.logging.Logger
-
-sealed interface TerminalInputAction {
-    data class TypeText(val text: String) : TerminalInputAction
-    data class SendAid(val aidCode: Int) : TerminalInputAction
-    data object Backspace : TerminalInputAction
-    data object Tab : TerminalInputAction
-    data object BackTab : TerminalInputAction
-    data object CursorLeft : TerminalInputAction
-    data object CursorRight : TerminalInputAction
-    data object CursorUp : TerminalInputAction
-    data object CursorDown : TerminalInputAction
-    data object Reset : TerminalInputAction
-    data class SetCursor(val baddr: Int) : TerminalInputAction
-}
-
-data class UntrustedCertPromptState(
-    val host: String,
-    val port: Int,
-    val chain: Array<java.security.cert.X509Certificate>?,
-    val exception: java.security.cert.CertificateException?,
-    val deferred: kotlinx.coroutines.CompletableDeferred<Boolean>
-)
-
-data class FTProgressState(
-    val isActive: Boolean = false,
-    val isRunning: Boolean = false,
-    val bytesTransferred: Long = 0L,
-    val statusMessage: String = "",
-    val isError: Boolean = false
-)
-
-class TerminalViewModel(application: Application) : AndroidViewModel(application) {
-
-    private val log = Logger.getLogger(TerminalViewModel::class.java.name)
-
-    var isAppInBackground: Boolean = false
-
-    // Dedicated single-thread FIFO queue for all local keyboard and cursor actions
-    private val inputExecutor = Executors.newSingleThreadExecutor()
-    private val inputDispatcher = inputExecutor.asCoroutineDispatcher()
-
-    // Non-blocking FIFO input channel buffer
-    private val inputChannel = Channel<TerminalInputAction>(Channel.UNLIMITED)
-
-    private val _connectionState = MutableStateFlow(ConnectionState.NOT_CONNECTED)
-    val connectionState: StateFlow<ConnectionState> = _connectionState.asStateFlow()
-
-    private val _screenBuffer = MutableStateFlow<ScreenBuffer?>(null)
-    val screenBuffer: StateFlow<ScreenBuffer?> = _screenBuffer.asStateFlow()
-
-    private val _rows = MutableStateFlow(24)
-    val rows: StateFlow<Int> = _rows.asStateFlow()
-
-    private val _cols = MutableStateFlow(80)
-    val cols: StateFlow<Int> = _cols.asStateFlow()
-
-    private val _cursorAddress = MutableStateFlow(0)
-    val cursorAddress: StateFlow<Int> = _cursorAddress.asStateFlow()
-
-    private val _oiaText = MutableStateFlow("Disconnected")
-    val oiaText: StateFlow<String> = _oiaText.asStateFlow()
-
-    private val _screenVersion = MutableStateFlow(0L)
-    val screenVersion: StateFlow<Long> = _screenVersion.asStateFlow()
-
-    private val _isKeyboardLocked = MutableStateFlow(false)
-    val isKeyboardLocked: StateFlow<Boolean> = _isKeyboardLocked.asStateFlow()
-
-    private val _maskHiddenInput = MutableStateFlow(AppSettings.isMaskHiddenInputEnabled(application))
-    val maskHiddenInput: StateFlow<Boolean> = _maskHiddenInput.asStateFlow()
-
-    private val _cursorBlink = MutableStateFlow(AppSettings.isCursorBlinkEnabled(application))
-    val cursorBlink: StateFlow<Boolean> = _cursorBlink.asStateFlow()
-
-    private val _hapticFeedback = MutableStateFlow(AppSettings.isHapticFeedbackEnabled(application))
-    val hapticFeedback: StateFlow<Boolean> = _hapticFeedback.asStateFlow()
-
-    private val _verifyCerts = MutableStateFlow(AppSettings.isVerifyCertsEnabled(application))
-    val verifyCerts: StateFlow<Boolean> = _verifyCerts.asStateFlow()
-
-    private val _defaultGraphicsMode = MutableStateFlow(AppSettings.getDefaultGraphicsMode(application))
-    val defaultGraphicsMode: StateFlow<String> = _defaultGraphicsMode.asStateFlow()
-
-    private val _isTlsActive = MutableStateFlow(false)
-    val isTlsActive: StateFlow<Boolean> = _isTlsActive.asStateFlow()
-
-    private val _isTlsVerified = MutableStateFlow(true)
-    val isTlsVerified: StateFlow<Boolean> = _isTlsVerified.asStateFlow()
-
-    private val _untrustedCertPrompt = MutableStateFlow<UntrustedCertPromptState?>(null)
-    val untrustedCertPrompt: StateFlow<UntrustedCertPromptState?> = _untrustedCertPrompt.asStateFlow()
-
-    // File Transfer State
-    private var fileTransferCoordinator: FileTransfer? = null
-    private val _ftState = MutableStateFlow(FTProgressState())
-    val ftState: StateFlow<FTProgressState> = _ftState.asStateFlow()
-
-    private var client: Telnet3270Client? = null
-    var currentHost: String = ""
-        private set
-    var activeHostType: String = "TSO"
-        private set
-
-    fun getClient(): Telnet3270Client? = client
-
-    private var lastScreenContentHash: Int = 0
-    private var hasInitialScreenLoaded: Boolean = false
-
-    init {
-        // Start continuous background input buffer consumer
-        viewModelScope.launch(inputDispatcher) {
-            for (action in inputChannel) {
-                processInputAction(action)
-                // Drain any additional pending actions in the buffer before updating the UI
-                while (true) {
-                    val next = inputChannel.tryReceive().getOrNull() ?: break
-                    processInputAction(next)
-                }
-                val c = client
-                if (c != null) {
-                    _cursorAddress.value = c.screenBuffer.cursorAddress
-                }
-                _screenVersion.value = System.currentTimeMillis()
-            }
-        }
-    }
-
-    private fun processInputAction(action: TerminalInputAction) {
-        val c = client ?: return
-        val ip = c.inputProcessor
-        val buf = c.screenBuffer
-
-        try {
-            when (action) {
-                is TerminalInputAction.TypeText -> {
-                    ip.isKeyboardLocked = false
-                    for (ch in action.text) {
-                        if (ch == '\n' || ch == '\r') {
-                            ip.setKeyboardLocked(false)
-                            ip.sendAid(AID_ENTER)
-                        } else if (ch >= ' ') {
-                            var curAddr = buf.cursorAddress
-                            if (buf.isFormatted) {
-                                val faVal = buf.getFieldAttributeAt(curAddr)
-                                if (faIsProtected(faVal.toInt() and 0xFF) || buf.getCell(curAddr).isFieldAttribute) {
-                                    curAddr = buf.findNextUnprotected(curAddr)
-                                    buf.cursorAddress = curAddr
-                                }
-                            }
-                            ip.typeCharacter(ch)
-                        }
-                    }
-                }
-                is TerminalInputAction.SendAid -> {
-                    ip.setKeyboardLocked(false)
-                    ip.sendAid(action.aidCode)
-                }
-                is TerminalInputAction.Backspace -> {
-                    ip.isKeyboardLocked = false
-                    ip.backspace()
-                }
-                is TerminalInputAction.Tab -> {
-                    ip.tab()
-                }
-                is TerminalInputAction.BackTab -> {
-                    ip.backTab()
-                }
-                is TerminalInputAction.CursorLeft -> {
-                    ip.cursorLeft()
-                }
-                is TerminalInputAction.CursorRight -> {
-                    ip.cursorRight()
-                }
-                is TerminalInputAction.CursorUp -> {
-                    ip.cursorUp()
-                }
-                is TerminalInputAction.CursorDown -> {
-                    ip.cursorDown()
-                }
-                is TerminalInputAction.Reset -> {
-                    ip.reset()
-                }
-                is TerminalInputAction.SetCursor -> {
-                    if (action.baddr in 0 until (buf.rows * buf.cols)) {
-                        buf.cursorAddress = action.baddr
-                    }
-                }
-            }
-        } catch (e: Exception) {
-            log.warning("Error processing input action: ${e.message}")
-        }
-    }
-
-    fun resolveUntrustedCert(accept: Boolean) {
-        try {
-            val prompt = _untrustedCertPrompt.value
-            if (prompt != null) {
-                prompt.deferred.complete(accept)
-                _untrustedCertPrompt.value = null
-            }
-        } catch (t: Throwable) {
-            log.warning("Error resolving untrusted cert: ${t.message}")
-        }
-    }
-
-    fun updateSettings(maskHidden: Boolean, blink: Boolean, haptic: Boolean, verifyCertsVal: Boolean = true, defaultGraphicsVal: String = "BOTH") {
-        AppSettings.setMaskHiddenInputEnabled(getApplication(), maskHidden)
-        AppSettings.setCursorBlinkEnabled(getApplication(), blink)
-        AppSettings.setHapticFeedbackEnabled(getApplication(), haptic)
-        AppSettings.setVerifyCertsEnabled(getApplication(), verifyCertsVal)
-        AppSettings.setDefaultGraphicsMode(getApplication(), defaultGraphicsVal)
-        _maskHiddenInput.value = maskHidden
-        _cursorBlink.value = blink
-        _hapticFeedback.value = haptic
-        _verifyCerts.value = verifyCertsVal
-        _defaultGraphicsMode.value = defaultGraphicsVal
-    }
-
-    fun connect(
-        host: String,
-        port: Int = 23,
-        modelNum: Int = 2,
-        luName: String = "",
-        hostType: String = "TSO",
-        useTls: Boolean = false,
-        tlsVerifyCert: Boolean = true,
-        graphicsModeStr: String = "BOTH"
-    ) {
-        currentHost = host
-        activeHostType = hostType
-        lastScreenContentHash = 0
-        hasInitialScreenLoaded = false
-        fileTransferCoordinator = null
-        _ftState.value = FTProgressState()
-
-        viewModelScope.launch(Dispatchers.IO) {
-            try {
-                // Always disconnect any existing client before establishing a new connection
-                if (client != null || _connectionState.value.isConnected()) {
-                    try {
-                        client?.disconnect()
-                    } catch (_: Exception) {}
-                    client = null
-                    _connectionState.value = ConnectionState.NOT_CONNECTED
-                }
-
-                val model = when (modelNum) {
-                    3 -> TerminalModel.IBM_3279_3
-                    4 -> TerminalModel.IBM_3279_4
-                    5 -> TerminalModel.IBM_3279_5
-                    else -> TerminalModel.IBM_3279_2
-                }
-
-                val parsedConfig = ConnectionConfig.parseHostString(host, port, model)
-                val effectiveHost = parsedConfig.host
-                val effectivePort = parsedConfig.port
-                val effectiveTls = useTls || parsedConfig.isUseTls
-                val globalVerify = AppSettings.isVerifyCertsEnabled(getApplication())
-                val effectiveVerify = tlsVerifyCert && globalVerify
-                val gMode = org.lib3270j.graphics.GraphicsMode.fromString(graphicsModeStr)
-
-                _isTlsActive.value = effectiveTls
-                _isTlsVerified.value = effectiveVerify
-                _oiaText.value = "Connecting to $effectiveHost:$effectivePort" + (if (effectiveTls) " [TLS]" else "") + "..."
-
-                val config = ConnectionConfig(effectiveHost, effectivePort, model).apply {
-                    if (luName.isNotBlank()) {
-                        setLuName(luName)
-                    }
-                    isUseTls = effectiveTls
-                    isTlsVerifyCert = effectiveVerify
-                    graphicsMode = gMode
-                }
-
-                config.certificateVerifier = org.lib3270j.tls.TlsCertificateVerifier { chain, _, exception ->
-                    if (!AppSettings.isVerifyCertsEnabled(getApplication())) {
-                        log.info("Certificate verification bypassed via global AppSettings")
-                        return@TlsCertificateVerifier true
-                    }
-                    log.info("Prompting user for untrusted certificate: $effectiveHost:$effectivePort")
-                    val deferred = kotlinx.coroutines.CompletableDeferred<Boolean>()
-                    _untrustedCertPrompt.value = UntrustedCertPromptState(
-                        host = effectiveHost,
-                        port = effectivePort,
-                        chain = chain,
-                        exception = exception,
-                        deferred = deferred
-                    )
-                    val accepted = try {
-                        kotlinx.coroutines.runBlocking { deferred.await() }
-                    } catch (t: Throwable) {
-                        log.warning("Certificate verifier prompt interrupted or failed: ${t.message}")
-                        false
-                    } finally {
-                        _untrustedCertPrompt.value = null
-                    }
-                    accepted
-                }
-
-                val newClient = Telnet3270Client(config)
-                this@TerminalViewModel.client = newClient
-
-                newClient.addConnectionListener(object : ConnectionListener {
-                    override fun onConnectionStateChanged(oldState: ConnectionState, newState: ConnectionState) {
-                        _connectionState.value = newState
-                        val tlsSuffix = if (effectiveTls) {
-                            if (effectiveVerify) " [🔒 TLS]" else " [🔓 TLS/Unverified]"
-                        } else ""
-                        _oiaText.value = if (newState.isFullSession()) {
-                            "3270 Connected ($effectiveHost - $activeHostType)$tlsSuffix"
-                        } else if (newState.isHalfConnected()) {
-                            "Connecting..."
-                        } else {
-                            "Disconnected"
-                        }
-                    }
-
-                    override fun onConnectionError(message: String) {
-                        log.warning("Connection error: $message")
-                        _oiaText.value = "Error: $message"
-                    }
-                })
-
-                newClient.inputProcessor.setLockStateListener { locked ->
-                    _isKeyboardLocked.value = locked
-                }
-
-                newClient.addScreenUpdateListener(object : ScreenUpdateListener {
-                    override fun onScreenUpdated() {
-                        val buf = newClient.screenBuffer
-                        _screenBuffer.value = buf
-                        if (buf != null) {
-                            _rows.value = buf.rows
-                            _cols.value = buf.cols
-                            _cursorAddress.value = buf.cursorAddress
-                        }
-                        _isKeyboardLocked.value = newClient.inputProcessor.isKeyboardLocked
-                        _screenVersion.value = System.currentTimeMillis()
-
-                        // Drive CUT mode file transfers if active
-                        fileTransferCoordinator?.onScreenUpdated()
-
-                        val newHash = computeScreenContentHash(buf)
-                        val contentChanged = (newHash != lastScreenContentHash)
-
-                        if (!hasInitialScreenLoaded) {
-                            if (buf != null && newHash != 0) {
-                                hasInitialScreenLoaded = true
-                                lastScreenContentHash = newHash
-                            }
-                        } else if (contentChanged) {
-                            lastScreenContentHash = newHash
-                            if (isAppInBackground) {
-                                val snippet = extractScreenSnippet(buf)
-                                val activeHost = currentHost.ifBlank { "Mainframe" }
-                                TerminalService.notifyScreenUpdate(getApplication(), activeHost, snippet)
-                            }
-                        }
-                    }
-
-                    override fun onSoundAlarm() {
-                        log.fine("Sound Alarm")
-                    }
-                })
-
-                _rows.value = model.defaultRows
-                _cols.value = model.defaultCols
-                _screenBuffer.value = newClient.screenBuffer
-
-                newClient.connect()
-            } catch (e: Throwable) {
-                log.severe("Failed to connect: ${e.message}")
-                _connectionState.value = ConnectionState.NOT_CONNECTED
-                _oiaText.value = "Failed: ${e.localizedMessage ?: e.message ?: "Connection error"}"
-            }
-        }
-    }
-
-    fun disconnect() {
-        viewModelScope.launch(Dispatchers.IO) {
-            try {
-                fileTransferCoordinator?.reset()
-                fileTransferCoordinator = null
-                client?.disconnect()
-                client = null
-                _connectionState.value = ConnectionState.NOT_CONNECTED
-                _oiaText.value = "Disconnected"
-                _ftState.value = FTProgressState()
-            } catch (e: Exception) {
-                log.warning("Error disconnecting: ${e.message}")
-            }
-        }
-    }
-
-    fun startFileTransfer(config: FTConfig, onResult: (String?) -> Unit = {}) {
-        val c = client
-        if (c == null || !_connectionState.value.isConnected()) {
-            val err = "Terminal is not connected."
-            _ftState.value = FTProgressState(isActive = false, statusMessage = err, isError = true)
-            onResult(err)
-            return
-        }
-
-        viewModelScope.launch(Dispatchers.IO) {
-            try {
-                // Resolve local path if relative (default to app files or download directory)
-                val rawPath = config.localFilename
-                if (!rawPath.startsWith("/")) {
-                    val appFilesDir = getApplication<Application>().getExternalFilesDir(null) ?: getApplication<Application>().filesDir
-                    val resolvedFile = File(appFilesDir, rawPath)
-                    config.localFilename = resolvedFile.absolutePath
-                }
-
-                if (fileTransferCoordinator == null) {
-                    fileTransferCoordinator = FileTransfer(c, object : FileTransfer.FileTransferCallback {
-                        override fun onTransferStarted() {
-                            _ftState.value = FTProgressState(
-                                isActive = true,
-                                isRunning = false,
-                                bytesTransferred = 0L,
-                                statusMessage = "Starting IND\$FILE transfer..."
-                            )
-                        }
-
-                        override fun onTransferRunning() {
-                            _ftState.value = _ftState.value.copy(
-                                isRunning = true,
-                                statusMessage = "Transfer in progress..."
-                            )
-                        }
-
-                        override fun onBytesTransferred(bytes: Long) {
-                            _ftState.value = _ftState.value.copy(
-                                bytesTransferred = bytes,
-                                statusMessage = "Transferring: $bytes bytes"
-                            )
-                        }
-
-                        override fun onTransferComplete(message: String) {
-                            _ftState.value = FTProgressState(
-                                isActive = false,
-                                isRunning = false,
-                                bytesTransferred = _ftState.value.bytesTransferred,
-                                statusMessage = message,
-                                isError = false
-                            )
-                        }
-
-                        override fun onTransferAborted(error: String) {
-                            _ftState.value = FTProgressState(
-                                isActive = false,
-                                isRunning = false,
-                                bytesTransferred = _ftState.value.bytesTransferred,
-                                statusMessage = "Transfer failed: $error",
-                                isError = true
-                            )
-                        }
-                    })
-                }
-
-                val err = fileTransferCoordinator?.startTransfer(config)
-                if (err != null) {
-                    _ftState.value = FTProgressState(
-                        isActive = false,
-                        statusMessage = "Error: $err",
-                        isError = true
-                    )
-                }
-                withContext(Dispatchers.Main) {
-                    onResult(err)
-                }
-            } catch (e: Exception) {
-                log.warning("Error in startFileTransfer: ${e.message}")
-                _ftState.value = FTProgressState(
-                    isActive = false,
-                    statusMessage = "Transfer error: ${e.message}",
-                    isError = true
-                )
-                withContext(Dispatchers.Main) {
-                    onResult(e.message)
-                }
-            }
-        }
-    }
-
-    fun cancelFileTransfer() {
-        viewModelScope.launch(Dispatchers.IO) {
-            try {
-                fileTransferCoordinator?.cancel()
-            } catch (e: Exception) {
-                log.warning("Error cancelling transfer: ${e.message}")
-            }
-        }
-    }
-
-    fun typeChar(ch: Char) {
-        inputChannel.trySend(TerminalInputAction.TypeText(ch.toString()))
-    }
-
-    fun typeString(text: String) {
-        if (text.isNotEmpty()) {
-            inputChannel.trySend(TerminalInputAction.TypeText(text))
-        }
-    }
-
-    fun pasteString(text: String) {
-        if (text.isNotEmpty()) {
-            inputChannel.trySend(TerminalInputAction.TypeText(text))
-        }
-    }
-
-    fun backspace() {
-        inputChannel.trySend(TerminalInputAction.Backspace)
-    }
-
-    fun tab() {
-        inputChannel.trySend(TerminalInputAction.Tab)
-    }
-
-    fun backTab() {
-        inputChannel.trySend(TerminalInputAction.BackTab)
-    }
-
-    fun resetKeyboard() {
-        inputChannel.trySend(TerminalInputAction.Reset)
-    }
-
-    fun sendAid(aidCode: Int) {
-        inputChannel.trySend(TerminalInputAction.SendAid(aidCode))
-    }
-
-    fun setCursor(baddr: Int) {
-        inputChannel.trySend(TerminalInputAction.SetCursor(baddr))
-    }
-
-    fun cursorLeft() {
-        inputChannel.trySend(TerminalInputAction.CursorLeft)
-    }
-
-    fun cursorUp() {
-        inputChannel.trySend(TerminalInputAction.CursorUp)
-    }
-
-    fun cursorDown() {
-        inputChannel.trySend(TerminalInputAction.CursorDown)
-    }
-
-    fun cursorRight() {
-        inputChannel.trySend(TerminalInputAction.CursorRight)
-    }
-
-    private fun extractScreenSnippet(buf: ScreenBuffer?): String {
-        if (buf == null) return "Mainframe screen update received"
-        val rows = buf.rows
-        val cols = buf.cols
-        if (rows <= 0 || cols <= 0) return "Mainframe screen update received"
-
-        val curAddr = _cursorAddress.value
-        val cursorRow = (curAddr / cols).coerceIn(0, rows - 1)
-
-        // 1. Check bottom 3 lines first (where 3270 status, errors, reader & I/S MSGs land)
-        val minBottomRow = (rows - 3).coerceAtLeast(1)
-        for (r in (rows - 1) downTo minBottomRow) {
-            val line = getLineText(buf, r, cols).trim()
-            if (line.length >= 4 && !line.startsWith("***") && !line.startsWith("===")) {
-                return line
-            }
-        }
-
-        // 2. Check cursor row if not row 0
-        if (cursorRow > 0) {
-            val cursorLine = getLineText(buf, cursorRow, cols).trim()
-            if (cursorLine.length >= 4) {
-                return cursorLine
-            }
-        }
-
-        // 3. Scan rows from bottom to top, skipping static header row 0
-        for (r in (rows - 1) downTo 1) {
-            val line = getLineText(buf, r, cols).trim()
-            if (line.length >= 4) {
-                return line
-            }
-        }
-
-        return getLineText(buf, 0, cols).trim().ifBlank { "Mainframe screen update received" }
-    }
-
-    private fun getLineText(buf: ScreenBuffer, row: Int, cols: Int): String {
-        val sb = StringBuilder()
-        for (c in 0 until cols) {
-            val addr = row * cols + c
-            val cell = buf.getCell(addr)
-            if (cell != null && !cell.isFieldAttribute) {
-                val ch = cell.ucs4
-                if (ch in '!'..'~' || ch.code > 127) {
-                    sb.append(ch)
-                } else {
-                    sb.append(' ')
-                }
-            } else {
-                sb.append(' ')
-            }
-        }
-        return sb.toString().replace(Regex("\\s+"), " ").trim()
-    }
-
-    private fun computeScreenContentHash(buf: ScreenBuffer?): Int {
-        if (buf == null) return 0
-        val sb = StringBuilder()
-        val total = buf.rows * buf.cols
-        for (i in 0 until total) {
-            val cell = buf.getCell(i)
-            if (cell != null && !cell.isFieldAttribute && cell.ucs4 > ' ' && cell.ucs4.code != 0xFFFF) {
-                sb.append(cell.ucs4)
-            }
-        }
-        return sb.toString().hashCode()
-    }
-
-    override fun onCleared() {
-        super.onCleared()
-        fileTransferCoordinator?.reset()
-        fileTransferCoordinator = null
-        client?.disconnect()
-        inputChannel.close()
-        inputExecutor.shutdown()
-    }
-}

src/main/java/org/pubvm/a3270/storage/AppSettings.kt

@@ -1,58 +0,0 @@
-package org.pubvm.a3270.storage
-
-import android.content.Context
-import android.content.SharedPreferences
-
-object AppSettings {
-    private const val PREFS_NAME = "a3270_settings"
-    private const val KEY_MASK_HIDDEN_INPUT = "mask_hidden_input"
-    private const val KEY_CURSOR_BLINK = "cursor_blink"
-    private const val KEY_HAPTIC_FEEDBACK = "haptic_feedback"
-
-    private const val KEY_VERIFY_CERTS = "verify_certs"
-    private const val KEY_DEFAULT_GRAPHICS_MODE = "default_graphics_mode"
-
-    private fun getPrefs(context: Context): SharedPreferences {
-        return context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE)
-    }
-
-    fun isMaskHiddenInputEnabled(context: Context): Boolean {
-        return getPrefs(context).getBoolean(KEY_MASK_HIDDEN_INPUT, true)
-    }
-
-    fun setMaskHiddenInputEnabled(context: Context, enabled: Boolean) {
-        getPrefs(context).edit().putBoolean(KEY_MASK_HIDDEN_INPUT, enabled).apply()
-    }
-
-    fun isCursorBlinkEnabled(context: Context): Boolean {
-        return getPrefs(context).getBoolean(KEY_CURSOR_BLINK, true)
-    }
-
-    fun setCursorBlinkEnabled(context: Context, enabled: Boolean) {
-        getPrefs(context).edit().putBoolean(KEY_CURSOR_BLINK, enabled).apply()
-    }
-
-    fun isHapticFeedbackEnabled(context: Context): Boolean {
-        return getPrefs(context).getBoolean(KEY_HAPTIC_FEEDBACK, true)
-    }
-
-    fun setHapticFeedbackEnabled(context: Context, enabled: Boolean) {
-        getPrefs(context).edit().putBoolean(KEY_HAPTIC_FEEDBACK, enabled).apply()
-    }
-
-    fun isVerifyCertsEnabled(context: Context): Boolean {
-        return getPrefs(context).getBoolean(KEY_VERIFY_CERTS, true)
-    }
-
-    fun setVerifyCertsEnabled(context: Context, enabled: Boolean) {
-        getPrefs(context).edit().putBoolean(KEY_VERIFY_CERTS, enabled).apply()
-    }
-
-    fun getDefaultGraphicsMode(context: Context): String {
-        return getPrefs(context).getString(KEY_DEFAULT_GRAPHICS_MODE, "BOTH") ?: "BOTH"
-    }
-
-    fun setDefaultGraphicsMode(context: Context, mode: String) {
-        getPrefs(context).edit().putString(KEY_DEFAULT_GRAPHICS_MODE, mode).apply()
-    }
-}

src/main/java/org/pubvm/a3270/ui/ConnectDialog.kt

@@ -1,425 +0,0 @@
-package org.pubvm.a3270.ui
-
-import androidx.compose.foundation.border
-import androidx.compose.foundation.clickable
-import androidx.compose.foundation.layout.*
-import androidx.compose.foundation.rememberScrollState
-import androidx.compose.foundation.shape.RoundedCornerShape
-import androidx.compose.foundation.verticalScroll
-import androidx.compose.material3.*
-import androidx.compose.runtime.*
-import androidx.compose.ui.Alignment
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.platform.LocalContext
-import androidx.compose.ui.text.font.FontWeight
-import androidx.compose.ui.unit.dp
-import androidx.compose.ui.unit.sp
-import androidx.compose.ui.window.Dialog
-import androidx.compose.ui.focus.FocusRequester
-import androidx.compose.ui.focus.focusRequester
-import androidx.compose.ui.platform.LocalSoftwareKeyboardController
-import org.pubvm.a3270.storage.HostStorage
-import org.pubvm.a3270.storage.SavedHost
-
-@Composable
-fun ConnectDialog(
-    onDismiss: () -> Unit,
-    onConnect: (host: String, port: Int, model: Int, luName: String, hostType: String, useTls: Boolean, tlsVerifyCert: Boolean, graphicsMode: String) -> Unit
-) {
-    val context = LocalContext.current
-    var savedHosts by remember { mutableStateOf(HostStorage.getSavedHosts(context)) }
-    var selectedHostId by remember { mutableStateOf<String?>(null) }
-
-    var profileName by remember { mutableStateOf("") }
-    var host by remember { mutableStateOf("127.0.0.1") }
-    var portStr by remember { mutableStateOf("23") }
-    var modelNum by remember { mutableIntStateOf(2) }
-    var luName by remember { mutableStateOf("") }
-    var autoConnect by remember { mutableStateOf(false) }
-    var hostType by remember { mutableStateOf("TSO") }
-    var useTls by remember { mutableStateOf(false) }
-    var tlsVerifyCert by remember { mutableStateOf(true) }
-    var graphicsMode by remember { mutableStateOf("BOTH") }
-
-    fun loadProfile(saved: SavedHost) {
-        selectedHostId = saved.id
-        profileName = saved.name
-        host = saved.host
-        portStr = saved.port.toString()
-        modelNum = saved.model
-        luName = saved.luName
-        autoConnect = saved.autoConnect
-        hostType = saved.hostType
-        useTls = saved.useTls
-        tlsVerifyCert = saved.tlsVerifyCert
-        graphicsMode = saved.graphicsMode
-    }
-
-    fun clearFields() {
-        selectedHostId = null
-        profileName = ""
-        host = "127.0.0.1"
-        portStr = "23"
-        modelNum = 2
-        luName = ""
-        autoConnect = false
-        hostType = "TSO"
-        useTls = false
-        tlsVerifyCert = true
-        graphicsMode = "BOTH"
-    }
-
-    fun saveCurrentProfile(): SavedHost? {
-        val port = portStr.toIntOrNull() ?: if (useTls) 992 else 23
-        if (host.isBlank()) return null
-        val nameToSave = profileName.ifBlank { "${host.trim()}:$port" }
-        val hostToSave = SavedHost(
-            id = selectedHostId ?: java.util.UUID.randomUUID().toString(),
-            name = nameToSave,
-            host = host.trim(),
-            port = port,
-            model = modelNum,
-            luName = luName.trim(),
-            autoConnect = autoConnect,
-            hostType = hostType,
-            useTls = useTls,
-            tlsVerifyCert = tlsVerifyCert,
-            graphicsMode = graphicsMode
-        )
-        HostStorage.saveHost(context, hostToSave)
-        savedHosts = HostStorage.getSavedHosts(context)
-        selectedHostId = hostToSave.id
-        return hostToSave
-    }
-
-    val focusRequester = remember { FocusRequester() }
-    val keyboardController = LocalSoftwareKeyboardController.current
-
-    LaunchedEffect(Unit) {
-        kotlinx.coroutines.delay(150)
-        focusRequester.requestFocus()
-        keyboardController?.show()
-    }
-
-    Dialog(onDismissRequest = onDismiss) {
-        Surface(
-            shape = RoundedCornerShape(12.dp),
-            color = Color(0xFF1E1E1E),
-            tonalElevation = 6.dp,
-            modifier = Modifier
-                .fillMaxWidth(0.96f)
-                .wrapContentHeight()
-        ) {
-            Column(
-                modifier = Modifier
-                    .fillMaxWidth()
-                    .padding(14.dp),
-                verticalArrangement = Arrangement.spacedBy(6.dp)
-            ) {
-                // Title Row
-                Row(
-                    modifier = Modifier.fillMaxWidth(),
-                    horizontalArrangement = Arrangement.SpaceBetween,
-                    verticalAlignment = Alignment.CenterVertically
-                ) {
-                    Text("Connect / Manage Hosts", fontWeight = FontWeight.Bold, fontSize = 15.sp, color = Color.White)
-                    TextButton(
-                        onClick = { clearFields() },
-                        contentPadding = PaddingValues(horizontal = 6.dp, vertical = 2.dp)
-                    ) {
-                        Text("+ New Profile", fontSize = 12.sp)
-                    }
-                }
-
-                // Scrollable Content Container
-                Box(
-                    modifier = Modifier
-                        .fillMaxWidth()
-                        .heightIn(max = 460.dp)
-                ) {
-                    val scrollState = rememberScrollState()
-                    Column(
-                        modifier = Modifier
-                            .fillMaxWidth()
-                            .verticalScroll(scrollState),
-                        verticalArrangement = Arrangement.spacedBy(8.dp)
-                    ) {
-                        // Saved Profiles List Section
-                        if (savedHosts.isNotEmpty()) {
-                            Text("Saved Host Profiles:", fontSize = 11.sp, fontWeight = FontWeight.Bold, color = Color.Gray)
-                            Column(
-                                modifier = Modifier.fillMaxWidth(),
-                                verticalArrangement = Arrangement.spacedBy(4.dp)
-                            ) {
-                                savedHosts.forEach { saved ->
-                                    val isSelected = (saved.id == selectedHostId)
-                                    val tlsTag = if (saved.useTls) {
-                                        if (saved.tlsVerifyCert) " [🔒 TLS]" else " [🔓 TLS/Unverified]"
-                                    } else ""
-                                    val gfxTag = if (saved.graphicsMode != "NONE") " [GFX: ${saved.graphicsMode}]" else ""
-
-                                    Surface(
-                                        shape = RoundedCornerShape(6.dp),
-                                        color = if (isSelected) Color(0xFF2C3E50) else Color(0xFF25262B),
-                                        border = if (isSelected) androidx.compose.foundation.BorderStroke(1.dp, Color(0xFF339AF0)) else null,
-                                        modifier = Modifier
-                                            .fillMaxWidth()
-                                            .clickable { loadProfile(saved) }
-                                    ) {
-                                        Row(
-                                            modifier = Modifier
-                                                .fillMaxWidth()
-                                                .padding(horizontal = 8.dp, vertical = 4.dp),
-                                            horizontalArrangement = Arrangement.SpaceBetween,
-                                            verticalAlignment = Alignment.CenterVertically
-                                        ) {
-                                            Column(modifier = Modifier.weight(1f)) {
-                                                Text(
-                                                    text = saved.name,
-                                                    fontWeight = FontWeight.SemiBold,
-                                                    fontSize = 12.sp,
-                                                    color = Color.White
-                                                )
-                                                Text(
-                                                    text = "${saved.host}:${saved.port} (M${saved.model} - ${saved.hostType})$tlsTag$gfxTag" +
-                                                            if (saved.autoConnect) " [Auto]" else "",
-                                                    fontSize = 10.sp,
-                                                    color = Color.LightGray
-                                                )
-                                            }
-                                            Row(verticalAlignment = Alignment.CenterVertically) {
-                                                IconButton(
-                                                    onClick = {
-                                                        loadProfile(saved)
-                                                        val hostToConn = saveCurrentProfile() ?: saved
-                                                        onConnect(
-                                                            hostToConn.host,
-                                                            hostToConn.port,
-                                                            hostToConn.model,
-                                                            hostToConn.luName,
-                                                            hostToConn.hostType,
-                                                            hostToConn.useTls,
-                                                            hostToConn.tlsVerifyCert,
-                                                            hostToConn.graphicsMode
-                                                        )
-                                                    },
-                                                    modifier = Modifier.size(28.dp)
-                                                ) {
-                                                    Text("▶", fontSize = 13.sp, color = Color(0xFF51CF66))
-                                                }
-                                                IconButton(
-                                                    onClick = {
-                                                        HostStorage.deleteHost(context, saved.id)
-                                                        savedHosts = HostStorage.getSavedHosts(context)
-                                                        if (selectedHostId == saved.id) {
-                                                            clearFields()
-                                                        }
-                                                    },
-                                                    modifier = Modifier.size(28.dp)
-                                                ) {
-                                                    Text("✕", fontSize = 12.sp, color = Color(0xFFFF6B6B))
-                                                }
-                                            }
-                                        }
-                                    }
-                                }
-                            }
-                            HorizontalDivider(color = Color(0xFF373A40), modifier = Modifier.padding(vertical = 2.dp))
-                        }
-
-                        Text(
-                            text = if (selectedHostId != null) "Editing Profile:" else "New Profile Details:",
-                            fontSize = 11.sp,
-                            fontWeight = FontWeight.Bold,
-                            color = Color.Gray
-                        )
-
-                        OutlinedTextField(
-                            value = profileName,
-                            onValueChange = { profileName = it },
-                            label = { Text("Profile Name (Optional)") },
-                            singleLine = true,
-                            modifier = Modifier.fillMaxWidth()
-                        )
-
-                        OutlinedTextField(
-                            value = host,
-                            onValueChange = { host = it },
-                            label = { Text("Host / IP Address") },
-                            singleLine = true,
-                            modifier = Modifier
-                                .fillMaxWidth()
-                                .focusRequester(focusRequester)
-                        )
-
-                        OutlinedTextField(
-                            value = portStr,
-                            onValueChange = { portStr = it },
-                            label = { Text("Port (default 23 or 992)") },
-                            singleLine = true,
-                            modifier = Modifier.fillMaxWidth()
-                        )
-
-                        // Terminal Model
-                        Row(
-                            horizontalArrangement = Arrangement.spacedBy(6.dp),
-                            verticalAlignment = Alignment.CenterVertically
-                        ) {
-                            Text("Model:", fontSize = 11.sp, color = Color.Gray)
-                            listOf(2, 3, 4, 5).forEach { m ->
-                                FilterChip(
-                                    selected = (modelNum == m),
-                                    onClick = { modelNum = m },
-                                    label = { Text("M$m", fontSize = 11.sp) }
-                                )
-                            }
-                        }
-
-                        // Host System Type (TSO, CMS, CICS)
-                        Row(
-                            horizontalArrangement = Arrangement.spacedBy(6.dp),
-                            verticalAlignment = Alignment.CenterVertically
-                        ) {
-                            Text("Host Type:", fontSize = 11.sp, color = Color.Gray)
-                            listOf("TSO", "CMS", "CICS").forEach { ht ->
-                                FilterChip(
-                                    selected = (hostType == ht),
-                                    onClick = { hostType = ht },
-                                    label = { Text(ht, fontSize = 11.sp) }
-                                )
-                            }
-                        }
-
-                        // Graphics Mode
-                        Row(
-                            horizontalArrangement = Arrangement.spacedBy(6.dp),
-                            verticalAlignment = Alignment.CenterVertically
-                        ) {
-                            Text("Graphics:", fontSize = 11.sp, color = Color.Gray)
-                            listOf(
-                                "PROGRAMMED_SYMBOLS" to "Symbols",
-                                "VECTOR_GRAPHICS" to "Vector",
-                                "BOTH" to "Both",
-                                "NONE" to "None"
-                            ).forEach { (modeKey, modeLabel) ->
-                                FilterChip(
-                                    selected = (graphicsMode.equals(modeKey, ignoreCase = true)),
-                                    onClick = { graphicsMode = modeKey },
-                                    label = { Text(modeLabel, fontSize = 11.sp) }
-                                )
-                            }
-                        }
-
-                        // TLS / SSL Checkbox
-                        Row(
-                            verticalAlignment = Alignment.CenterVertically,
-                            modifier = Modifier
-                                .fillMaxWidth()
-                                .clickable {
-                                    val newTls = !useTls
-                                    useTls = newTls
-                                    if (newTls && portStr.trim() == "23") {
-                                        portStr = "992"
-                                    } else if (!newTls && portStr.trim() == "992") {
-                                        portStr = "23"
-                                    }
-                                }
-                        ) {
-                            Checkbox(
-                                checked = useTls,
-                                onCheckedChange = { checked ->
-                                    useTls = checked
-                                    if (checked && portStr.trim() == "23") {
-                                        portStr = "992"
-                                    } else if (!checked && portStr.trim() == "992") {
-                                        portStr = "23"
-                                    }
-                                }
-                            )
-                            Spacer(modifier = Modifier.width(4.dp))
-                            Text("Enable TLS / SSL Connection", fontSize = 12.sp, color = Color.White)
-                        }
-
-                        // Verify Certificate Checkbox
-                        if (useTls) {
-                            Row(
-                                verticalAlignment = Alignment.CenterVertically,
-                                modifier = Modifier
-                                    .fillMaxWidth()
-                                    .padding(start = 16.dp)
-                                    .clickable { tlsVerifyCert = !tlsVerifyCert }
-                            ) {
-                                Checkbox(
-                                    checked = tlsVerifyCert,
-                                    onCheckedChange = { tlsVerifyCert = it }
-                                )
-                                Spacer(modifier = Modifier.width(4.dp))
-                                Text("Verify Server Certificate", fontSize = 12.sp, color = if (tlsVerifyCert) Color.LightGray else Color(0xFFFFB450))
-                            }
-                        }
-
-                        OutlinedTextField(
-                            value = luName,
-                            onValueChange = { luName = it },
-                            label = { Text("LU Name (Optional)") },
-                            singleLine = true,
-                            modifier = Modifier.fillMaxWidth()
-                        )
-
-                        Row(
-                            verticalAlignment = Alignment.CenterVertically,
-                            modifier = Modifier
-                                .fillMaxWidth()
-                                .clickable { autoConnect = !autoConnect }
-                        ) {
-                            Checkbox(
-                                checked = autoConnect,
-                                onCheckedChange = { autoConnect = it }
-                            )
-                            Spacer(modifier = Modifier.width(4.dp))
-                            Text("Auto-connect on app startup", fontSize = 12.sp)
-                        }
-                    }
-                }
-
-                // Action Buttons Row
-                Row(
-                    modifier = Modifier
-                        .fillMaxWidth()
-                        .padding(top = 4.dp),
-                    horizontalArrangement = Arrangement.End,
-                    verticalAlignment = Alignment.CenterVertically
-                ) {
-                    TextButton(onClick = onDismiss) {
-                        Text("Cancel")
-                    }
-                    Spacer(modifier = Modifier.width(4.dp))
-                    OutlinedButton(onClick = { saveCurrentProfile() }) {
-                        Text("Save")
-                    }
-                    Spacer(modifier = Modifier.width(4.dp))
-                    Button(
-                        onClick = {
-                            val saved = saveCurrentProfile()
-                            if (saved != null) {
-                                onConnect(
-                                    saved.host,
-                                    saved.port,
-                                    saved.model,
-                                    saved.luName,
-                                    saved.hostType,
-                                    saved.useTls,
-                                    saved.tlsVerifyCert,
-                                    saved.graphicsMode
-                                )
-                            }
-                        }
-                    ) {
-                        Text("Connect")
-                    }
-                }
-            }
-        }
-    }
-}

src/main/java/org/pubvm/a3270/ui/FileTransferDialog.kt

@@ -1,258 +0,0 @@
-package org.pubvm.a3270.ui
-
-import androidx.compose.foundation.layout.*
-import androidx.compose.foundation.rememberScrollState
-import androidx.compose.foundation.verticalScroll
-import androidx.compose.material3.*
-import androidx.compose.runtime.*
-import androidx.compose.ui.Alignment
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.text.font.FontWeight
-import androidx.compose.ui.unit.dp
-import androidx.compose.ui.unit.sp
-import org.lib3270j.ft.FTConfig
-import org.pubvm.a3270.FTProgressState
-
-@Composable
-fun FileTransferDialog(
-    initialHostType: String = "TSO",
-    ftProgressState: FTProgressState = FTProgressState(),
-    onDismiss: () -> Unit,
-    onStartTransfer: (FTConfig) -> Unit,
-    onCancelTransfer: () -> Unit = {}
-) {
-    val initialTypeEnum = when (initialHostType.uppercase()) {
-        "CMS", "VM/CMS", "VM" -> FTConfig.HostType.CMS
-        "CICS" -> FTConfig.HostType.CICS
-        else -> FTConfig.HostType.TSO
-    }
-
-    var hostFile by remember { mutableStateOf("") }
-    var localFile by remember { mutableStateOf("") }
-    var isReceive by remember { mutableStateOf(true) }
-    var isAscii by remember { mutableStateOf(true) }
-    var hostType by remember { mutableStateOf(initialTypeEnum) }
-    var recfm by remember { mutableStateOf(FTConfig.RecordFormat.DEFAULT) }
-    var lreclStr by remember { mutableStateOf("") }
-    var blksizeStr by remember { mutableStateOf("") }
-    var overwrite by remember { mutableStateOf(true) }
-
-    AlertDialog(
-        onDismissRequest = onDismiss,
-        title = {
-            Text("IND\$FILE File Transfer", fontWeight = FontWeight.Bold, fontSize = 16.sp)
-        },
-        text = {
-            Column(
-                modifier = Modifier
-                    .fillMaxWidth()
-                    .verticalScroll(rememberScrollState())
-                    .padding(vertical = 4.dp),
-                verticalArrangement = Arrangement.spacedBy(8.dp)
-            ) {
-                // Active Transfer Progress Banner
-                if (ftProgressState.isActive || ftProgressState.isRunning) {
-                    Card(
-                        colors = CardDefaults.cardColors(containerColor = Color(0xFF25262B)),
-                        modifier = Modifier.fillMaxWidth()
-                    ) {
-                        Column(
-                            modifier = Modifier
-                                .fillMaxWidth()
-                                .padding(12.dp),
-                            verticalArrangement = Arrangement.spacedBy(6.dp)
-                        ) {
-                            Text(
-                                text = ftProgressState.statusMessage.ifBlank { "Transferring..." },
-                                fontSize = 13.sp,
-                                fontWeight = FontWeight.SemiBold,
-                                color = if (ftProgressState.isError) Color(0xFFFF6B6B) else Color(0xFF51CF66)
-                            )
-                            LinearProgressIndicator(modifier = Modifier.fillMaxWidth())
-                            if (ftProgressState.bytesTransferred > 0) {
-                                Text(
-                                    text = "${ftProgressState.bytesTransferred} bytes transferred",
-                                    fontSize = 11.sp,
-                                    color = Color.LightGray
-                                )
-                            }
-                            Button(
-                                onClick = onCancelTransfer,
-                                colors = ButtonDefaults.buttonColors(containerColor = Color(0xFFC92A2A)),
-                                modifier = Modifier.align(Alignment.End)
-                            ) {
-                                Text("Cancel Transfer", fontSize = 11.sp)
-                            }
-                        }
-                    }
-                    HorizontalDivider(color = Color(0xFF373A40))
-                } else if (ftProgressState.statusMessage.isNotBlank()) {
-                    Text(
-                        text = ftProgressState.statusMessage,
-                        fontSize = 12.sp,
-                        color = if (ftProgressState.isError) Color(0xFFFF6B6B) else Color(0xFF51CF66)
-                    )
-                }
-
-                OutlinedTextField(
-                    value = hostFile,
-                    onValueChange = { hostFile = it },
-                    label = { Text("Host Dataset / File Name") },
-                    placeholder = { Text(if (hostType == FTConfig.HostType.TSO) "'USER.DATA'" else "PROFILE EXEC A") },
-                    singleLine = true,
-                    modifier = Modifier.fillMaxWidth()
-                )
-
-                OutlinedTextField(
-                    value = localFile,
-                    onValueChange = { localFile = it },
-                    label = { Text("Local File Name / Path") },
-                    placeholder = { Text("sample.txt") },
-                    supportingText = { Text("Relative names will be stored in app Downloads/Files storage", fontSize = 10.sp) },
-                    singleLine = true,
-                    modifier = Modifier.fillMaxWidth()
-                )
-
-                // Transfer Direction
-                Row(
-                    modifier = Modifier.fillMaxWidth(),
-                    horizontalArrangement = Arrangement.SpaceBetween,
-                    verticalAlignment = Alignment.CenterVertically
-                ) {
-                    Text("Direction:", fontSize = 12.sp, fontWeight = FontWeight.SemiBold)
-                    Row {
-                        FilterChip(
-                            selected = isReceive,
-                            onClick = { isReceive = true },
-                            label = { Text("Receive (GET)", fontSize = 11.sp) }
-                        )
-                        Spacer(modifier = Modifier.width(4.dp))
-                        FilterChip(
-                            selected = !isReceive,
-                            onClick = { isReceive = false },
-                            label = { Text("Send (PUT)", fontSize = 11.sp) }
-                        )
-                    }
-                }
-
-                // Transfer Mode
-                Row(
-                    modifier = Modifier.fillMaxWidth(),
-                    horizontalArrangement = Arrangement.SpaceBetween,
-                    verticalAlignment = Alignment.CenterVertically
-                ) {
-                    Text("Mode:", fontSize = 12.sp, fontWeight = FontWeight.SemiBold)
-                    Row {
-                        FilterChip(
-                            selected = isAscii,
-                            onClick = { isAscii = true },
-                            label = { Text("ASCII (Text)", fontSize = 11.sp) }
-                        )
-                        Spacer(modifier = Modifier.width(4.dp))
-                        FilterChip(
-                            selected = !isAscii,
-                            onClick = { isAscii = false },
-                            label = { Text("Binary", fontSize = 11.sp) }
-                        )
-                    }
-                }
-
-                // Host Type (TSO, CMS, CICS)
-                Row(
-                    modifier = Modifier.fillMaxWidth(),
-                    horizontalArrangement = Arrangement.SpaceBetween,
-                    verticalAlignment = Alignment.CenterVertically
-                ) {
-                    Text("Host Type:", fontSize = 12.sp, fontWeight = FontWeight.SemiBold)
-                    Row {
-                        FTConfig.HostType.values().forEach { ht ->
-                            FilterChip(
-                                selected = (hostType == ht),
-                                onClick = { hostType = ht },
-                                label = { Text(ht.name, fontSize = 11.sp) }
-                            )
-                            Spacer(modifier = Modifier.width(4.dp))
-                        }
-                    }
-                }
-
-                // TSO Send Options
-                if (!isReceive && hostType == FTConfig.HostType.TSO) {
-                    Text("TSO Dataset Allocation:", fontSize = 12.sp, fontWeight = FontWeight.Bold, color = Color.Gray)
-                    Row(
-                        modifier = Modifier.fillMaxWidth(),
-                        horizontalArrangement = Arrangement.SpaceBetween,
-                        verticalAlignment = Alignment.CenterVertically
-                    ) {
-                        Text("Record Format:", fontSize = 11.sp)
-                        Row {
-                            listOf(
-                                FTConfig.RecordFormat.DEFAULT to "Def",
-                                FTConfig.RecordFormat.FIXED to "F",
-                                FTConfig.RecordFormat.VARIABLE to "V"
-                            ).forEach { (rf, label) ->
-                                FilterChip(
-                                    selected = (recfm == rf),
-                                    onClick = { recfm = rf },
-                                    label = { Text(label, fontSize = 11.sp) }
-                                )
-                                Spacer(modifier = Modifier.width(4.dp))
-                            }
-                        }
-                    }
-
-                    Row(
-                        modifier = Modifier.fillMaxWidth(),
-                        horizontalArrangement = Arrangement.spacedBy(8.dp)
-                    ) {
-                        OutlinedTextField(
-                            value = lreclStr,
-                            onValueChange = { lreclStr = it },
-                            label = { Text("LRECL", fontSize = 11.sp) },
-                            singleLine = true,
-                            modifier = Modifier.weight(1f)
-                        )
-                        OutlinedTextField(
-                            value = blksizeStr,
-                            onValueChange = { blksizeStr = it },
-                            label = { Text("BLKSIZE", fontSize = 11.sp) },
-                            singleLine = true,
-                            modifier = Modifier.weight(1f)
-                        )
-                    }
-                }
-            }
-        },
-        confirmButton = {
-            Button(
-                onClick = {
-                    if (hostFile.isNotBlank() && localFile.isNotBlank()) {
-                        val config = FTConfig().apply {
-                            setHostFilename(hostFile.trim())
-                            setLocalFilename(localFile.trim())
-                            setDirection(if (isReceive) FTConfig.Direction.RECEIVE else FTConfig.Direction.SEND)
-                            setTransferMode(if (isAscii) FTConfig.TransferMode.ASCII else FTConfig.TransferMode.BINARY)
-                            setHostType(hostType)
-                            setExistAction(if (overwrite) FTConfig.ExistAction.REPLACE else FTConfig.ExistAction.KEEP)
-                            if (!isReceive && hostType == FTConfig.HostType.TSO) {
-                                setRecfm(recfm)
-                                lreclStr.toIntOrNull()?.let { setLrecl(it) }
-                                blksizeStr.toIntOrNull()?.let { setBlksize(it) }
-                            }
-                        }
-                        onStartTransfer(config)
-                    }
-                },
-                enabled = hostFile.isNotBlank() && localFile.isNotBlank() && !ftProgressState.isRunning
-            ) {
-                Text("Start Transfer")
-            }
-        },
-        dismissButton = {
-            TextButton(onClick = onDismiss) {
-                Text("Close")
-            }
-        }
-    )
-}

src/main/java/org/pubvm/a3270/ui/FunctionKeyBar.kt

@@ -1,233 +0,0 @@
-package org.pubvm.a3270.ui
-
-import android.view.HapticFeedbackConstants
-import androidx.compose.foundation.background
-import androidx.compose.foundation.layout.*
-import androidx.compose.foundation.shape.RoundedCornerShape
-import androidx.compose.material3.*
-import androidx.compose.runtime.*
-import androidx.compose.ui.Alignment
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.focus.focusProperties
-import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.platform.LocalView
-import androidx.compose.ui.text.font.FontFamily
-import androidx.compose.ui.text.font.FontWeight
-import androidx.compose.ui.unit.dp
-import androidx.compose.ui.unit.sp
-import org.lib3270j.ConnectionState
-import org.lib3270j.protocol.DS3270Constants.*
-
-@Composable
-fun TwoRowKeyBar(
-    connectionState: ConnectionState,
-    isShiftPressed: Boolean = false,
-    hapticFeedbackEnabled: Boolean = true,
-    onClearShift: () -> Unit = {},
-    onConnectClick: () -> Unit,
-    onDisconnectClick: () -> Unit,
-    onFtClick: () -> Unit,
-    onSettingsClick: () -> Unit = {},
-    onSendAid: (Int) -> Unit,
-    onReset: () -> Unit,
-    onTab: () -> Unit,
-    onBackTab: () -> Unit,
-    onCursorLeft: () -> Unit = {},
-    onCursorUp: () -> Unit = {},
-    onCursorDown: () -> Unit = {},
-    onCursorRight: () -> Unit = {},
-    modifier: Modifier = Modifier
-) {
-    var menuExpanded by remember { mutableStateOf(false) }
-
-    Column(
-        modifier = modifier
-            .fillMaxWidth()
-            .background(Color(0xFF161719))
-    ) {
-        // Row 1: System & Quick Action Keys (Static 12-key row matching Row 2 columns)
-        Row(
-            modifier = Modifier
-                .fillMaxWidth()
-                .height(35.dp)
-                .padding(horizontal = 1.dp, vertical = 1.dp),
-            verticalAlignment = Alignment.CenterVertically
-        ) {
-            // 1. Menu Dropdown Button (Connect/Disconnect/FT/Settings)
-            Box(modifier = Modifier.weight(1f)) {
-                KeyButton(
-                    label = "⋮",
-                    color = Color(0xFF343A40),
-                    modifier = Modifier.fillMaxWidth(),
-                    hapticFeedbackEnabled = hapticFeedbackEnabled,
-                    innerPaddingHorizontal = 0.dp,
-                    onClick = { menuExpanded = true }
-                )
-                DropdownMenu(
-                    expanded = menuExpanded,
-                    onDismissRequest = { menuExpanded = false },
-                    modifier = Modifier.background(Color(0xFF2C2D30))
-                ) {
-                    if (!connectionState.isConnected()) {
-                        DropdownMenuItem(
-                            text = { Text("Connect", color = Color.White, fontWeight = FontWeight.SemiBold) },
-                            onClick = {
-                                menuExpanded = false
-                                onConnectClick()
-                            }
-                        )
-                    } else {
-                        DropdownMenuItem(
-                            text = { Text("Disconnect", color = Color(0xFFFF6B6B), fontWeight = FontWeight.SemiBold) },
-                            onClick = {
-                                menuExpanded = false
-                                onDisconnectClick()
-                            }
-                        )
-                        DropdownMenuItem(
-                            text = { Text("File Transfer (FT)", color = Color.White, fontWeight = FontWeight.SemiBold) },
-                            onClick = {
-                                menuExpanded = false
-                                onFtClick()
-                            }
-                        )
-                    }
-                    DropdownMenuItem(
-                        text = { Text("Settings", color = Color.White, fontWeight = FontWeight.SemiBold) },
-                        onClick = {
-                            menuExpanded = false
-                            onSettingsClick()
-                        }
-                    )
-                }
-            }
-
-            // 2. TAB / BTAB depending on Shift state
-            val tabLabel = if (isShiftPressed) "BTAB" else "TAB"
-            KeyButton(
-                label = tabLabel,
-                color = Color(0xFF1C7ED6),
-                modifier = Modifier.weight(1f),
-                hapticFeedbackEnabled = hapticFeedbackEnabled,
-                innerPaddingHorizontal = 0.dp,
-                onClick = {
-                    if (isShiftPressed) {
-                        onBackTab()
-                        onClearShift()
-                    } else {
-                        onTab()
-                    }
-                }
-            )
-
-            // 3. RESET
-            KeyButton("RESET", Color(0xFFE67700), modifier = Modifier.weight(1f), hapticFeedbackEnabled = hapticFeedbackEnabled, innerPaddingHorizontal = 0.dp, onClick = onReset)
-
-            // 4. ENTER
-            KeyButton("ENTER", Color(0xFF2B8A3E), modifier = Modifier.weight(1f), hapticFeedbackEnabled = hapticFeedbackEnabled, innerPaddingHorizontal = 0.dp, onClick = { onSendAid(AID_ENTER) })
-
-            // 5. CLEAR
-            KeyButton("CLEAR", Color(0xFFC92A2A), modifier = Modifier.weight(1f), hapticFeedbackEnabled = hapticFeedbackEnabled, innerPaddingHorizontal = 0.dp, onClick = { onSendAid(AID_CLEAR) })
-
-            // 6. PA1
-            KeyButton("PA1", Color(0xFF495057), modifier = Modifier.weight(1f), hapticFeedbackEnabled = hapticFeedbackEnabled, innerPaddingHorizontal = 0.dp, onClick = { onSendAid(AID_PA1) })
-
-            // 7. PA2
-            KeyButton("PA2", Color(0xFF495057), modifier = Modifier.weight(1f), hapticFeedbackEnabled = hapticFeedbackEnabled, innerPaddingHorizontal = 0.dp, onClick = { onSendAid(AID_PA2) })
-
-            // 8. PA3
-            KeyButton("PA3", Color(0xFF495057), modifier = Modifier.weight(1f), hapticFeedbackEnabled = hapticFeedbackEnabled, innerPaddingHorizontal = 0.dp, onClick = { onSendAid(AID_PA3) })
-
-            // 9. Left Navigation
-            KeyButton("←", Color(0xFF343A40), modifier = Modifier.weight(1f), hapticFeedbackEnabled = hapticFeedbackEnabled, innerPaddingHorizontal = 0.dp, onClick = onCursorLeft)
-
-            // 10. Up Navigation
-            KeyButton("↑", Color(0xFF343A40), modifier = Modifier.weight(1f), hapticFeedbackEnabled = hapticFeedbackEnabled, innerPaddingHorizontal = 0.dp, onClick = onCursorUp)
-
-            // 11. Down Navigation
-            KeyButton("↓", Color(0xFF343A40), modifier = Modifier.weight(1f), hapticFeedbackEnabled = hapticFeedbackEnabled, innerPaddingHorizontal = 0.dp, onClick = onCursorDown)
-
-            // 12. Right Navigation
-            KeyButton("→", Color(0xFF343A40), modifier = Modifier.weight(1f), hapticFeedbackEnabled = hapticFeedbackEnabled, innerPaddingHorizontal = 0.dp, onClick = onCursorRight)
-        }
-
-        Spacer(modifier = Modifier.height(1.dp).fillMaxWidth().background(Color(0xFF2C2D30)))
-
-        // Row 2: PF Keys (F1-F12 when Shift is off; F13-F24 when Shift is down) - Non-scrolling, full width
-        Row(
-            modifier = Modifier
-                .fillMaxWidth()
-                .height(35.dp)
-                .padding(horizontal = 1.dp, vertical = 1.dp),
-            verticalAlignment = Alignment.CenterVertically
-        ) {
-            val pfAids = intArrayOf(
-                AID_PF1, AID_PF2, AID_PF3, AID_PF4, AID_PF5, AID_PF6,
-                AID_PF7, AID_PF8, AID_PF9, AID_PF10, AID_PF11, AID_PF12,
-                AID_PF13, AID_PF14, AID_PF15, AID_PF16, AID_PF17, AID_PF18,
-                AID_PF19, AID_PF20, AID_PF21, AID_PF22, AID_PF23, AID_PF24
-            )
-
-            val startPf = if (isShiftPressed) 13 else 1
-            val endPf = if (isShiftPressed) 24 else 12
-
-            for (i in startPf..endPf) {
-                val aid = pfAids[i - 1]
-                KeyButton(
-                    label = "F$i",
-                    color = Color(0xFF364FC7),
-                    modifier = Modifier.weight(1f),
-                    hapticFeedbackEnabled = hapticFeedbackEnabled,
-                    innerPaddingHorizontal = 0.dp,
-                    onClick = {
-                        onSendAid(aid)
-                        if (isShiftPressed) {
-                            onClearShift()
-                        }
-                    }
-                )
-            }
-        }
-    }
-}
-
-@Composable
-private fun KeyButton(
-    label: String,
-    color: Color,
-    onClick: () -> Unit,
-    modifier: Modifier = Modifier,
-    hapticFeedbackEnabled: Boolean = true,
-    innerPaddingHorizontal: androidx.compose.ui.unit.Dp = 0.dp
-) {
-    val view = LocalView.current
-    Surface(
-        onClick = {
-            if (hapticFeedbackEnabled) {
-                view.performHapticFeedback(HapticFeedbackConstants.KEYBOARD_TAP)
-            }
-            onClick()
-        },
-        shape = RoundedCornerShape(4.dp),
-        color = color,
-        shadowElevation = 1.dp,
-        modifier = modifier
-            .padding(horizontal = 1.dp, vertical = 1.dp)
-            .height(31.dp)
-            .focusProperties { canFocus = false }
-    ) {
-        Box(
-            contentAlignment = Alignment.Center,
-            modifier = Modifier.padding(horizontal = innerPaddingHorizontal)
-        ) {
-            Text(
-                text = label,
-                color = Color.White,
-                fontSize = 10.sp,
-                fontFamily = FontFamily.Monospace,
-                fontWeight = FontWeight.Bold,
-                maxLines = 1
-            )
-        }
-    }
-}

src/main/java/org/pubvm/a3270/ui/OiaStatusBar.kt

@@ -1,149 +0,0 @@
-package org.pubvm.a3270.ui
-
-import androidx.compose.foundation.background
-import androidx.compose.foundation.layout.*
-import androidx.compose.foundation.shape.RoundedCornerShape
-import androidx.compose.material3.Surface
-import androidx.compose.material3.Text
-import androidx.compose.runtime.Composable
-import androidx.compose.ui.Alignment
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.text.font.FontFamily
-import androidx.compose.ui.text.font.FontWeight
-import androidx.compose.ui.unit.dp
-import androidx.compose.ui.unit.sp
-import org.lib3270j.ConnectionState
-
-@Composable
-fun OiaStatusBar(
-    connectionState: ConnectionState,
-    currentHost: String,
-    isKeyboardLocked: Boolean,
-    oiaText: String,
-    cursorAddr: Int,
-    rows: Int,
-    cols: Int,
-    isTls: Boolean = false,
-    isTlsVerified: Boolean = true,
-    graphicsMode: String = "NONE",
-    modifier: Modifier = Modifier
-) {
-    val row = if (cols > 0) (cursorAddr / cols) + 1 else 1
-    val col = if (cols > 0) (cursorAddr % cols) + 1 else 1
-    val posStr = String.format("%02d/%02d", row, col)
-
-    val hostText = if (currentHost.isNotBlank()) currentHost else oiaText
-
-    val lockStatusText = if (!connectionState.isConnected()) {
-        "OFFLINE"
-    } else if (isKeyboardLocked) {
-        "X SYSTEM"
-    } else {
-        "READY"
-    }
-
-    val lockStatusColor = if (!connectionState.isConnected()) {
-        Color(0xFF868E96)
-    } else if (isKeyboardLocked) {
-        Color(0xFFFF6B6B) // Red for locked
-    } else {
-        Color(0xFF51CF66) // Green for ready
-    }
-
-    Row(
-        modifier = modifier
-            .fillMaxWidth()
-            .height(26.dp)
-            .background(Color(0xFF161719))
-            .padding(horizontal = 8.dp),
-        verticalAlignment = Alignment.CenterVertically,
-        horizontalArrangement = Arrangement.SpaceBetween
-    ) {
-        // Connected Host & Status Indicator
-        Row(
-            verticalAlignment = Alignment.CenterVertically,
-            modifier = Modifier.weight(1f)
-        ) {
-            Box(
-                modifier = Modifier
-                    .size(8.dp)
-                    .background(if (connectionState.isConnected()) Color(0xFF51CF66) else Color(0xFF868E96))
-            )
-            Spacer(modifier = Modifier.width(6.dp))
-            Text(
-                text = hostText,
-                color = Color.White,
-                fontSize = 11.sp,
-                fontFamily = FontFamily.Monospace,
-                fontWeight = FontWeight.Bold,
-                maxLines = 1
-            )
-
-            // TLS Badge
-            if (connectionState.isConnected() && isTls) {
-                Spacer(modifier = Modifier.width(6.dp))
-                Surface(
-                    color = if (isTlsVerified) Color(0xFF51CF66).copy(alpha = 0.2f) else Color(0xFFFFB450).copy(alpha = 0.2f),
-                    shape = RoundedCornerShape(4.dp)
-                ) {
-                    Text(
-                        text = if (isTlsVerified) "🔒 TLS" else "🔓 TLS",
-                        color = if (isTlsVerified) Color(0xFF51CF66) else Color(0xFFFFB450),
-                        fontSize = 9.sp,
-                        fontFamily = FontFamily.Monospace,
-                        fontWeight = FontWeight.Bold,
-                        modifier = Modifier.padding(horizontal = 4.dp, vertical = 1.dp)
-                    )
-                }
-            }
-
-            // GFX Mode Badge
-            if (connectionState.isConnected() && graphicsMode != "NONE" && graphicsMode.isNotBlank()) {
-                Spacer(modifier = Modifier.width(6.dp))
-                Surface(
-                    color = Color(0xFF22B8CF).copy(alpha = 0.2f),
-                    shape = RoundedCornerShape(4.dp)
-                ) {
-                    Text(
-                        text = when (graphicsMode) {
-                            "VECTOR_GRAPHICS" -> "GOCA"
-                            "PROGRAMMED_SYMBOLS" -> "PS"
-                            else -> "GFX"
-                        },
-                        color = Color(0xFF22B8CF),
-                        fontSize = 9.sp,
-                        fontFamily = FontFamily.Monospace,
-                        fontWeight = FontWeight.Bold,
-                        modifier = Modifier.padding(horizontal = 4.dp, vertical = 1.dp)
-                    )
-                }
-            }
-        }
-
-        // Terminal Keyboard Lock Status Badge (X SYSTEM vs READY)
-        Surface(
-            color = lockStatusColor.copy(alpha = 0.2f),
-            shape = RoundedCornerShape(4.dp),
-            modifier = Modifier.padding(horizontal = 4.dp)
-        ) {
-            Text(
-                text = lockStatusText,
-                color = lockStatusColor,
-                fontSize = 10.sp,
-                fontFamily = FontFamily.Monospace,
-                fontWeight = FontWeight.Bold,
-                modifier = Modifier.padding(horizontal = 6.dp, vertical = 2.dp)
-            )
-        }
-
-        // Cursor Position
-        Text(
-            text = "R$posStr",
-            color = Color(0xFF22B8CF),
-            fontSize = 11.sp,
-            fontFamily = FontFamily.Monospace,
-            fontWeight = FontWeight.Bold
-        )
-    }
-}

src/main/java/org/pubvm/a3270/ui/SettingsDialog.kt

@@ -1,244 +0,0 @@
-package org.pubvm.a3270.ui
-
-import androidx.compose.foundation.layout.*
-import androidx.compose.foundation.rememberScrollState
-import androidx.compose.foundation.shape.RoundedCornerShape
-import androidx.compose.foundation.verticalScroll
-import androidx.compose.material3.*
-import androidx.compose.runtime.*
-import androidx.compose.ui.Alignment
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.text.font.FontWeight
-import androidx.compose.ui.unit.dp
-import androidx.compose.ui.unit.sp
-import androidx.compose.ui.window.Dialog
-
-@Composable
-fun SettingsDialog(
-    initialMaskHiddenInput: Boolean,
-    initialCursorBlink: Boolean,
-    initialHapticFeedback: Boolean = true,
-    initialVerifyCerts: Boolean = true,
-    initialDefaultGraphicsMode: String = "BOTH",
-    onDismiss: () -> Unit,
-    onSave: (maskHiddenInput: Boolean, cursorBlink: Boolean, hapticFeedback: Boolean, verifyCerts: Boolean, defaultGraphicsMode: String) -> Unit
-) {
-    var maskHiddenInput by remember { mutableStateOf(initialMaskHiddenInput) }
-    var cursorBlink by remember { mutableStateOf(initialCursorBlink) }
-    var hapticFeedback by remember { mutableStateOf(initialHapticFeedback) }
-    var verifyCerts by remember { mutableStateOf(initialVerifyCerts) }
-    var defaultGraphicsMode by remember { mutableStateOf(initialDefaultGraphicsMode) }
-
-    Dialog(onDismissRequest = onDismiss) {
-        Card(
-            shape = RoundedCornerShape(12.dp),
-            colors = CardDefaults.cardColors(containerColor = Color(0xFF1E1E1E)),
-            modifier = Modifier
-                .fillMaxWidth()
-                .padding(16.dp)
-        ) {
-            Column(
-                modifier = Modifier
-                    .fillMaxWidth()
-                    .verticalScroll(rememberScrollState())
-                    .padding(20.dp)
-            ) {
-                Text(
-                    text = "Terminal Settings",
-                    fontSize = 18.sp,
-                    fontWeight = FontWeight.Bold,
-                    color = Color.White
-                )
-
-                Spacer(modifier = Modifier.height(16.dp))
-
-                // Setting 1: Mask Protected/Hidden Input with '*'
-                Row(
-                    modifier = Modifier.fillMaxWidth(),
-                    verticalAlignment = Alignment.CenterVertically,
-                    horizontalArrangement = Arrangement.SpaceBetween
-                ) {
-                    Column(modifier = Modifier.weight(1f).padding(end = 12.dp)) {
-                        Text(
-                            text = "Show '*' for Hidden Fields",
-                            fontSize = 14.sp,
-                            fontWeight = FontWeight.SemiBold,
-                            color = Color.White
-                        )
-                        Text(
-                            text = "Display asterisks for typed characters in non-display / password fields rather than blank spaces.",
-                            fontSize = 12.sp,
-                            color = Color.LightGray
-                        )
-                    }
-                    Switch(
-                        checked = maskHiddenInput,
-                        onCheckedChange = { maskHiddenInput = it },
-                        colors = SwitchDefaults.colors(
-                            checkedThumbColor = Color.White,
-                            checkedTrackColor = Color(0xFF2B8A3E)
-                        )
-                    )
-                }
-
-                Spacer(modifier = Modifier.height(16.dp))
-                HorizontalDivider(color = Color(0xFF2C2D30))
-                Spacer(modifier = Modifier.height(16.dp))
-
-                // Setting 2: Blinking Cursor
-                Row(
-                    modifier = Modifier.fillMaxWidth(),
-                    verticalAlignment = Alignment.CenterVertically,
-                    horizontalArrangement = Arrangement.SpaceBetween
-                ) {
-                    Column(modifier = Modifier.weight(1f).padding(end = 12.dp)) {
-                        Text(
-                            text = "Blinking Cursor",
-                            fontSize = 14.sp,
-                            fontWeight = FontWeight.SemiBold,
-                            color = Color.White
-                        )
-                        Text(
-                            text = "Blink the terminal cursor to clearly indicate current screen position.",
-                            fontSize = 12.sp,
-                            color = Color.LightGray
-                        )
-                    }
-                    Switch(
-                        checked = cursorBlink,
-                        onCheckedChange = { cursorBlink = it },
-                        colors = SwitchDefaults.colors(
-                            checkedThumbColor = Color.White,
-                            checkedTrackColor = Color(0xFF2B8A3E)
-                        )
-                    )
-                }
-
-                Spacer(modifier = Modifier.height(16.dp))
-                HorizontalDivider(color = Color(0xFF2C2D30))
-                Spacer(modifier = Modifier.height(16.dp))
-
-                // Setting 3: Button Haptic Feedback
-                Row(
-                    modifier = Modifier.fillMaxWidth(),
-                    verticalAlignment = Alignment.CenterVertically,
-                    horizontalArrangement = Arrangement.SpaceBetween
-                ) {
-                    Column(modifier = Modifier.weight(1f).padding(end = 12.dp)) {
-                        Text(
-                            text = "Button Haptic Feedback",
-                            fontSize = 14.sp,
-                            fontWeight = FontWeight.SemiBold,
-                            color = Color.White
-                        )
-                        Text(
-                            text = "Vibrate softly when tapping function and navigation buttons to match keyboard tactile feedback.",
-                            fontSize = 12.sp,
-                            color = Color.LightGray
-                        )
-                    }
-                    Switch(
-                        checked = hapticFeedback,
-                        onCheckedChange = { hapticFeedback = it },
-                        colors = SwitchDefaults.colors(
-                            checkedThumbColor = Color.White,
-                            checkedTrackColor = Color(0xFF2B8A3E)
-                        )
-                    )
-                }
-
-                Spacer(modifier = Modifier.height(16.dp))
-                HorizontalDivider(color = Color(0xFF2C2D30))
-                Spacer(modifier = Modifier.height(16.dp))
-
-                // Setting 4: Overall TLS Certificate Verification
-                Row(
-                    modifier = Modifier.fillMaxWidth(),
-                    verticalAlignment = Alignment.CenterVertically,
-                    horizontalArrangement = Arrangement.SpaceBetween
-                ) {
-                    Column(modifier = Modifier.weight(1f).padding(end = 12.dp)) {
-                        Text(
-                            text = "Verify TLS Certificates",
-                            fontSize = 14.sp,
-                            fontWeight = FontWeight.SemiBold,
-                            color = Color.White
-                        )
-                        Text(
-                            text = "Enforce SSL/TLS certificate validation. Turn off to allow self-signed or unverified certificates without security prompts.",
-                            fontSize = 12.sp,
-                            color = Color.LightGray
-                        )
-                    }
-                    Switch(
-                        checked = verifyCerts,
-                        onCheckedChange = { verifyCerts = it },
-                        colors = SwitchDefaults.colors(
-                            checkedThumbColor = Color.White,
-                            checkedTrackColor = Color(0xFF2B8A3E)
-                        )
-                    )
-                }
-
-                Spacer(modifier = Modifier.height(16.dp))
-                HorizontalDivider(color = Color(0xFF2C2D30))
-                Spacer(modifier = Modifier.height(16.dp))
-
-                // Setting 5: Default Graphics Support Mode
-                Column(modifier = Modifier.fillMaxWidth()) {
-                    Text(
-                        text = "Default Graphics Mode",
-                        fontSize = 14.sp,
-                        fontWeight = FontWeight.SemiBold,
-                        color = Color.White
-                    )
-                    Text(
-                        text = "Configure default vector graphics (GOCA) and Programmed Symbols (APL) mode.",
-                        fontSize = 12.sp,
-                        color = Color.LightGray
-                    )
-                    Spacer(modifier = Modifier.height(8.dp))
-                    Row(
-                        horizontalArrangement = Arrangement.spacedBy(6.dp),
-                        verticalAlignment = Alignment.CenterVertically
-                    ) {
-                        listOf(
-                            "BOTH" to "Both",
-                            "VECTOR_GRAPHICS" to "Vector",
-                            "PROGRAMMED_SYMBOLS" to "Symbols",
-                            "NONE" to "None"
-                        ).forEach { (modeKey, modeLabel) ->
-                            FilterChip(
-                                selected = defaultGraphicsMode.equals(modeKey, ignoreCase = true),
-                                onClick = { defaultGraphicsMode = modeKey },
-                                label = { Text(modeLabel, fontSize = 11.sp) }
-                            )
-                        }
-                    }
-                }
-
-                Spacer(modifier = Modifier.height(24.dp))
-
-                // Action Buttons
-                Row(
-                    modifier = Modifier.fillMaxWidth(),
-                    horizontalArrangement = Arrangement.End
-                ) {
-                    TextButton(onClick = onDismiss) {
-                        Text("Cancel", color = Color.LightGray)
-                    }
-                    Spacer(modifier = Modifier.width(8.dp))
-                    Button(
-                        onClick = {
-                            onSave(maskHiddenInput, cursorBlink, hapticFeedback, verifyCerts, defaultGraphicsMode)
-                        },
-                        colors = ButtonDefaults.buttonColors(containerColor = Color(0xFF2B8A3E))
-                    ) {
-                        Text("Save", color = Color.White)
-                    }
-                }
-            }
-        }
-    }
-}

src/main/java/org/pubvm/a3270/ui/TerminalView.kt

@@ -1,505 +0,0 @@
-package org.pubvm.a3270.ui
-
-import android.graphics.Paint
-import android.graphics.Typeface
-import android.widget.Toast
-import androidx.compose.foundation.Canvas
-import androidx.compose.foundation.background
-import androidx.compose.foundation.gestures.awaitFirstDown
-import androidx.compose.foundation.layout.Box
-import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.material3.DropdownMenu
-import androidx.compose.material3.DropdownMenuItem
-import androidx.compose.material3.Text
-import androidx.compose.runtime.*
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.geometry.Offset
-import androidx.compose.ui.geometry.Size
-import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.graphics.nativeCanvas
-import androidx.compose.ui.input.pointer.pointerInput
-import androidx.compose.ui.platform.LocalClipboardManager
-import androidx.compose.ui.platform.LocalContext
-import androidx.compose.ui.platform.LocalDensity
-import androidx.compose.ui.text.AnnotatedString
-import androidx.compose.ui.unit.DpOffset
-import androidx.compose.ui.unit.dp
-import kotlinx.coroutines.delay
-import org.lib3270j.protocol.DS3270Constants.*
-import org.lib3270j.screen.ExtendedAttribute
-import org.lib3270j.screen.ScreenBuffer
-
-// Standard 3279 Host Colors (16-color palette)
-private val HOST_COLORS = arrayOf(
-    Color(0xFF000000), // 0: Neutral Black
-    Color(0xFF5078FF), // 1: Blue
-    Color(0xFFFF3232), // 2: Red
-    Color(0xFFFF82B4), // 3: Pink
-    Color(0xFF32CD32), // 4: Green
-    Color(0xFF40E0D0), // 5: Turquoise
-    Color(0xFFFFFF50), // 6: Yellow
-    Color(0xFFFFFFFF), // 7: Neutral White
-    Color(0xFF000000), // 8: Black
-    Color(0xFF1E3CB4), // 9: Deep Blue
-    Color(0xFFFFA500), // 10: Orange
-    Color(0xFFB482FF), // 11: Purple
-    Color(0xFF90EE90), // 12: Pale Green
-    Color(0xFFAFEEEE), // 13: Pale Turquoise
-    Color(0xFFAAAAAA), // 14: Grey
-    Color(0xFFFFFFFF)  // 15: White
-)
-
-private val COLOR_BLACK = Color(0xFF0A0A0A)
-
-@Composable
-fun TerminalView(
-    screenBuffer: ScreenBuffer?,
-    rows: Int,
-    cols: Int,
-    cursorAddr: Int,
-    screenVersion: Long,
-    programSymbolManager: org.lib3270j.graphics.ProgramSymbolManager? = null,
-    graphicsPlane: org.lib3270j.graphics.GraphicsPlane? = null,
-    maskHiddenFields: Boolean = true,
-    blinkCursor: Boolean = true,
-    onTapAddress: (Int) -> Unit,
-    onPasteText: (String) -> Unit = {},
-    modifier: Modifier = Modifier
-) {
-    val context = LocalContext.current
-    val clipboardManager = LocalClipboardManager.current
-    val density = LocalDensity.current
-
-    var selectionStart by remember { mutableStateOf<Offset?>(null) }
-    var selectionEnd by remember { mutableStateOf<Offset?>(null) }
-    var showContextMenu by remember { mutableStateOf(false) }
-    var contextMenuOffset by remember { mutableStateOf(Offset.Zero) }
-
-    // Blinking cursor state (~530ms interval matching j3270)
-    var cursorVisible by remember { mutableStateOf(true) }
-    LaunchedEffect(cursorAddr, blinkCursor) {
-        if (!blinkCursor) {
-            cursorVisible = true
-            return@LaunchedEffect
-        }
-        cursorVisible = true
-        while (true) {
-            delay(530L)
-            cursorVisible = !cursorVisible
-        }
-    }
-
-    Box(modifier = modifier.fillMaxSize()) {
-        Canvas(
-            modifier = Modifier
-                .fillMaxSize()
-                .background(COLOR_BLACK)
-                .pointerInput(cols, rows) {
-                    awaitPointerEventScope {
-                        while (true) {
-                            val down = awaitFirstDown(requireUnconsumed = false)
-                            val startTime = System.currentTimeMillis()
-                            val startPos = down.position
-                            var currentPos = startPos
-                            var isDragStarted = false
-                            val slop = viewConfiguration.touchSlop
-
-                            while (true) {
-                                val event = awaitPointerEvent()
-                                val change = event.changes.firstOrNull { it.id == down.id } ?: break
-                                if (!change.pressed) {
-                                    break
-                                }
-                                currentPos = change.position
-                                val distance = (currentPos - startPos).getDistance()
-
-                                if (distance > slop) {
-                                    if (!isDragStarted) {
-                                        isDragStarted = true
-                                        selectionStart = startPos
-                                        showContextMenu = false
-                                    }
-                                    selectionEnd = currentPos
-                                    change.consume()
-                                }
-                            }
-
-                            val duration = System.currentTimeMillis() - startTime
-                            val totalDistance = (currentPos - startPos).getDistance()
-
-                            if (isDragStarted) {
-                                // Drag completed: Keep selection box highlighted, DO NOT open context menu
-                                showContextMenu = false
-                            } else if (duration >= 600L && totalDistance <= slop) {
-                                // Stationary Long Press (held >= 600ms without dragging)
-                                contextMenuOffset = startPos
-                                showContextMenu = true
-                            } else if (totalDistance <= slop) {
-                                // Short Tap (Move Cursor)
-                                showContextMenu = false
-                                selectionStart = null
-                                selectionEnd = null
-                                val cellWidth = size.width / cols
-                                val cellHeight = size.height / rows
-                                if (cellWidth > 0 && cellHeight > 0) {
-                                    val col = (startPos.x / cellWidth).toInt().coerceIn(0, cols - 1)
-                                    val row = (startPos.y / cellHeight).toInt().coerceIn(0, rows - 1)
-                                    var addr = row * cols + col
-
-                                    val buf = screenBuffer
-                                    if (buf != null && buf.isFormatted) {
-                                        val faVal = buf.getFieldAttributeAt(addr)
-                                        if (faIsProtected(faVal.toInt() and 0xFF) || buf.getCell(addr).isFieldAttribute) {
-                                            addr = buf.findNextUnprotected(addr)
-                                        }
-                                    }
-                                    onTapAddress(addr)
-                                }
-                            }
-                        }
-                    }
-                }
-        ) {
-            val width = size.width
-            val height = size.height
-            val cellWidth = width / cols
-            val cellHeight = height / rows
-
-            if (cellWidth <= 0 || cellHeight <= 0) return@Canvas
-
-            val paint = Paint().apply {
-                isAntiAlias = true
-                typeface = Typeface.MONOSPACE
-                textSize = cellHeight * 0.85f
-            }
-
-            val buf = screenBuffer
-            val totalCells = rows * cols
-
-            var currentFA: Byte = 0
-            var currentFieldEa: ExtendedAttribute? = null
-
-            // Calculate selected cell rectangle range if drag selection active
-            var selMinRow = -1
-            var selMaxRow = -1
-            var selMinCol = -1
-            var selMaxCol = -1
-
-            val start = selectionStart
-            val end = selectionEnd
-            if (start != null && end != null) {
-                val startCol = (start.x / cellWidth).toInt().coerceIn(0, cols - 1)
-                val startRow = (start.y / cellHeight).toInt().coerceIn(0, rows - 1)
-                val endCol = (end.x / cellWidth).toInt().coerceIn(0, cols - 1)
-                val endRow = (end.y / cellHeight).toInt().coerceIn(0, rows - 1)
-
-                selMinRow = minOf(startRow, endRow)
-                selMaxRow = maxOf(startRow, endRow)
-                selMinCol = minOf(startCol, endCol)
-                selMaxCol = maxOf(startCol, endCol)
-            }
-
-            for (r in 0 until rows) {
-                for (c in 0 until cols) {
-                    val addr = r * cols + c
-                    if (addr >= totalCells) break
-
-                    val left = c * cellWidth
-                    val top = r * cellHeight
-
-                    var charVal = ' '
-                    var fgColor: Color
-                    var bgColor = COLOR_BLACK
-                    var isBold = false
-                    var isUnderline = false
-                    var isReverse = false
-                    var csVal = 0
-                    var ecVal = 0
-
-                    if (buf != null) {
-                        val ea = buf.getCell(addr)
-
-                        if (ea.isFieldAttribute) {
-                            currentFA = ea.fa
-                            currentFieldEa = ea
-                            continue
-                        }
-
-                        // Compute 3270 color and field intensity
-                        fgColor = getFgColorForAttribute(ea, currentFieldEa, currentFA)
-                        bgColor = getBgColorForAttribute(ea, currentFieldEa)
-
-                        csVal = if (ea.cs != 0.toByte()) (ea.cs.toInt() and 0xFF)
-                                else (currentFieldEa?.cs?.toInt()?.and(0xFF) ?: 0)
-                        ecVal = ea.ec.toInt() and 0xFF
-
-                        // Intensity
-                        if (faIsHigh(currentFA.toInt() and 0xFF)) {
-                            isBold = true
-                        }
-
-                        // Invisible fields (passwords / hidden inputs)
-                        if (faIsZero(currentFA.toInt() and 0xFF)) {
-                            if (maskHiddenFields && ea.ucs4 > ' ' && ea.ucs4.code != 0xFFFF) {
-                                charVal = '*'
-                            } else {
-                                // Blanks out character
-                                charVal = ' '
-                            }
-                        } else {
-                            // Normal visible character
-                            if (ea.ucs4 > ' ' && ea.ucs4.code != 0xFFFF) {
-                                charVal = ea.ucs4
-                            }
-                        }
-
-                        // Extended Graphic Rendition
-                        val gr = if (ea.gr != 0.toByte()) ea.gr else (currentFieldEa?.gr ?: 0)
-                        if (gr != 0.toByte()) {
-                            val grVal = gr.toInt() and 0xFF
-                            if ((grVal and GR_INTENSIFY) != 0) isBold = true
-                            if ((grVal and GR_UNDERLINE) != 0) isUnderline = true
-                            if ((grVal and GR_REVERSE) != 0) isReverse = true
-                        }
-                    } else {
-                        fgColor = HOST_COLORS[HOST_COLOR_GREEN]
-                    }
-
-                    if (isReverse) {
-                        val tmp = fgColor
-                        fgColor = bgColor
-                        bgColor = tmp
-                    }
-
-                    if (bgColor != COLOR_BLACK) {
-                        drawRect(
-                            color = bgColor,
-                            topLeft = Offset(left, top),
-                            size = Size(cellWidth, cellHeight)
-                        )
-                    }
-
-                    // Highlight selected block range
-                    val isSelected = r in selMinRow..selMaxRow && c in selMinCol..selMaxCol
-                    if (isSelected) {
-                        drawRect(
-                            color = Color(0x773399FF),
-                            topLeft = Offset(left, top),
-                            size = Size(cellWidth, cellHeight)
-                        )
-                    }
-
-                    // Cursor indicator (respects blinking toggle & timer)
-                    if (addr == cursorAddr && !isSelected && cursorVisible) {
-                        drawRect(
-                            color = HOST_COLORS[HOST_COLOR_TURQUOISE].copy(alpha = 0.5f),
-                            topLeft = Offset(left, top),
-                            size = Size(cellWidth, cellHeight)
-                        )
-                    }
-
-                    // Draw Programmed Symbol (PS / APL) if defined
-                    var drawnAsPs = false
-                    if (csVal >= 0x40 && programSymbolManager != null) {
-                        val slot = programSymbolManager.getSymbol(csVal, ecVal)
-                        if (slot != null) {
-                            val symWidth = slot.width
-                            val symHeight = slot.height
-                            val rgbArray = slot.getRgbPixels(fgColor.toArgb(), bgColor.toArgb())
-                            if (rgbArray != null && symWidth > 0 && symHeight > 0) {
-                                val bmp = android.graphics.Bitmap.createBitmap(rgbArray, symWidth, symHeight, android.graphics.Bitmap.Config.ARGB_8888)
-                                drawContext.canvas.nativeCanvas.drawBitmap(
-                                    bmp,
-                                    null,
-                                    android.graphics.RectF(left, top, left + cellWidth, top + cellHeight),
-                                    null
-                                )
-                                drawnAsPs = true
-                            }
-                        }
-                    }
-
-                    if (!drawnAsPs && charVal != ' ') {
-                        paint.color = fgColor.toArgb()
-                        paint.isFakeBoldText = isBold
-                        val fontMetrics = paint.fontMetrics
-                        val textY = top + (cellHeight - fontMetrics.bottom + fontMetrics.top) / 2 - fontMetrics.top
-
-                        drawContext.canvas.nativeCanvas.drawText(
-                            charVal.toString(),
-                            left + (cellWidth / 4),
-                            textY,
-                            paint
-                        )
-                    }
-
-                    if (isUnderline) {
-                        drawLine(
-                            color = fgColor,
-                            start = Offset(left, top + cellHeight - 2),
-                            end = Offset(left + cellWidth, top + cellHeight - 2),
-                            strokeWidth = 2f
-                        )
-                    }
-                }
-            }
-
-            // Draw Vector Graphics Plane overlay if present
-            if (graphicsPlane != null && graphicsPlane.hasContent()) {
-                val gridW = (cols * cellWidth).toInt()
-                val gridH = (rows * cellHeight).toInt()
-                if (gridW > 0 && gridH > 0) {
-                    graphicsPlane.resize(gridW, gridH)
-                    val rgb = graphicsPlane.rgbBuffer
-                    if (rgb != null) {
-                        val bmp = android.graphics.Bitmap.createBitmap(rgb, gridW, gridH, android.graphics.Bitmap.Config.ARGB_8888)
-                        drawContext.canvas.nativeCanvas.drawBitmap(
-                            bmp,
-                            null,
-                            android.graphics.RectF(0f, 0f, gridW.toFloat(), gridH.toFloat()),
-                            null
-                        )
-                    }
-                }
-            }
-        }
-
-        // Context Menu Popup
-        DropdownMenu(
-            expanded = showContextMenu,
-            onDismissRequest = { showContextMenu = false },
-            offset = DpOffset(
-                x = (contextMenuOffset.x / density.density).dp,
-                y = (contextMenuOffset.y / density.density).dp
-            )
-        ) {
-            val hasSelection = selectionStart != null && selectionEnd != null
-            if (hasSelection) {
-                DropdownMenuItem(
-                    text = { Text("Copy Selection") },
-                    onClick = {
-                        showContextMenu = false
-                        copySelection(selectionStart, selectionEnd, screenBuffer, rows, cols, clipboardManager, context)
-                    }
-                )
-                DropdownMenuItem(
-                    text = { Text("Clear Selection") },
-                    onClick = {
-                        showContextMenu = false
-                        selectionStart = null
-                        selectionEnd = null
-                    }
-                )
-            } else {
-                DropdownMenuItem(
-                    text = { Text("Select All") },
-                    onClick = {
-                        showContextMenu = false
-                        selectionStart = Offset(0f, 0f)
-                        selectionEnd = Offset(100000f, 100000f)
-                    }
-                )
-            }
-
-            DropdownMenuItem(
-                text = { Text("Paste") },
-                onClick = {
-                    showContextMenu = false
-                    val clipText = clipboardManager.getText()?.text
-                    if (!clipText.isNullOrEmpty()) {
-                        onPasteText(clipText)
-                        Toast.makeText(context, "Pasted text from clipboard", Toast.LENGTH_SHORT).show()
-                    } else {
-                        Toast.makeText(context, "Clipboard is empty", Toast.LENGTH_SHORT).show()
-                    }
-                }
-            )
-        }
-    }
-}
-
-private fun copySelection(
-    start: Offset?,
-    end: Offset?,
-    screenBuffer: ScreenBuffer?,
-    rows: Int,
-    cols: Int,
-    clipboardManager: androidx.compose.ui.platform.ClipboardManager,
-    context: android.content.Context
-) {
-    if (start != null && end != null && screenBuffer != null && cols > 0 && rows > 0) {
-        val displayMetrics = context.resources.displayMetrics
-        val cellWidth = displayMetrics.widthPixels.toFloat() / cols
-        val cellHeight = displayMetrics.heightPixels.toFloat() / rows
-
-        val startCol = (start.x / cellWidth).toInt().coerceIn(0, cols - 1)
-        val startRow = (start.y / cellHeight).toInt().coerceIn(0, rows - 1)
-        val endCol = (end.x / cellWidth).toInt().coerceIn(0, cols - 1)
-        val endRow = (end.y / cellHeight).toInt().coerceIn(0, rows - 1)
-
-        val minRow = minOf(startRow, endRow)
-        val maxRow = maxOf(startRow, endRow)
-        val minCol = minOf(startCol, endCol)
-        val maxCol = maxOf(startCol, endCol)
-
-        val sb = StringBuilder()
-        for (r in minRow..maxRow) {
-            val line = StringBuilder()
-            for (c in minCol..maxCol) {
-                val addr = r * cols + c
-                if (addr < (rows * cols)) {
-                    val cell = screenBuffer.getCell(addr)
-                    if (cell != null && !cell.isFieldAttribute && cell.ucs4 > ' ' && cell.ucs4.code != 0xFFFF) {
-                        line.append(cell.ucs4)
-                    } else {
-                        line.append(' ')
-                    }
-                }
-            }
-            sb.append(line.toString().trimEnd()).append('\n')
-        }
-        val textToCopy = sb.toString().trimEnd()
-        if (textToCopy.isNotBlank()) {
-            clipboardManager.setText(AnnotatedString(textToCopy))
-            Toast.makeText(context, "Copied selected block to clipboard", Toast.LENGTH_SHORT).show()
-        }
-    }
-}
-
-private fun getFgColorForAttribute(ea: ExtendedAttribute, currentFieldEa: ExtendedAttribute?, currentFA: Byte): Color {
-    val fg = if (ea.fg != 0.toByte()) (ea.fg.toInt() and 0xFF)
-             else if (currentFieldEa != null && currentFieldEa.fg != 0.toByte()) (currentFieldEa.fg.toInt() and 0xFF)
-             else 0
-
-    if (fg in 0xf0..0xff) {
-        return HOST_COLORS[fg - 0xf0]
-    }
-    val fa = currentFA.toInt() and 0xFF
-    return if (faIsProtected(fa)) {
-        if (faIsHigh(fa)) HOST_COLORS[HOST_COLOR_WHITE] else HOST_COLORS[HOST_COLOR_BLUE]
-    } else {
-        if (faIsHigh(fa)) HOST_COLORS[HOST_COLOR_RED] else HOST_COLORS[HOST_COLOR_GREEN]
-    }
-}
-
-private fun getBgColorForAttribute(ea: ExtendedAttribute, currentFieldEa: ExtendedAttribute?): Color {
-    val bg = if (ea.bg != 0.toByte()) (ea.bg.toInt() and 0xFF)
-             else if (currentFieldEa != null && currentFieldEa.bg != 0.toByte()) (currentFieldEa.bg.toInt() and 0xFF)
-             else 0
-
-    if (bg in 0xf0..0xff) {
-        val idx = bg - 0xf0
-        if (idx == HOST_COLOR_NEUTRAL_BLACK || idx == HOST_COLOR_BLACK) {
-            return COLOR_BLACK
-        }
-        return HOST_COLORS[idx]
-    }
-    return COLOR_BLACK
-}
-
-private fun Color.toArgb(): Int {
-    return (alpha * 255).toInt() shl 24 or
-           ((red * 255).toInt() shl 16) or
-           ((green * 255).toInt() shl 8) or
-           (blue * 255).toInt()
-}

src/test/java/haus/nightmare/a3270/CodePageAndStorageTest.kt

@@ -0,0 +1,109 @@
+package haus.nightmare.a3270
+
+import haus.nightmare.a3270.storage.SavedHost
+import haus.nightmare.lib3270j.charset.CodePageRegistry
+import haus.nightmare.lib3270j.charset.EbcdicTranslator
+import haus.nightmare.lib3270j.TerminalModel
+import haus.nightmare.lib3270j.screen.ScreenBuffer
+import org.junit.Assert.*
+import org.junit.Test
+import java.util.UUID
+
+class CodePageAndStorageTest {
+
+    @Test
+    fun testSavedHostCodePageSerialization() {
+        val host = SavedHost(
+            id = UUID.randomUUID().toString(),
+            name = "Test Mainframe",
+            host = "192.168.1.100",
+            port = 23,
+            model = 4,
+            luName = "LU3270",
+            autoConnect = true,
+            hostType = "TSO",
+            useTls = true,
+            tlsVerifyCert = false,
+            tn3270e = true,
+            graphicsMode = "BOTH",
+            codePage = "1047",
+            proxyType = "SOCKS5",
+            proxyHost = "proxy.example.com",
+            proxyPort = 1080,
+            proxyUsername = "testuser",
+            proxyPassword = "secretpassword"
+        )
+
+        val json = host.toJson()
+        assertEquals("1047", json.getString("codePage"))
+        assertEquals("Test Mainframe", json.getString("name"))
+        assertTrue(json.getBoolean("autoConnect"))
+        assertEquals("SOCKS5", json.getString("proxyType"))
+        assertEquals("proxy.example.com", json.getString("proxyHost"))
+        assertEquals(1080, json.getInt("proxyPort"))
+        assertEquals("testuser", json.getString("proxyUsername"))
+        assertEquals("secretpassword", json.getString("proxyPassword"))
+
+        val deserialized = SavedHost.fromJson(json)
+        assertEquals(host.id, deserialized.id)
+        assertEquals(host.name, deserialized.name)
+        assertEquals(host.host, deserialized.host)
+        assertEquals(host.port, deserialized.port)
+        assertEquals(host.model, deserialized.model)
+        assertEquals(host.codePage, deserialized.codePage)
+        assertEquals(host.graphicsMode, deserialized.graphicsMode)
+        assertEquals(host.proxyType, deserialized.proxyType)
+        assertEquals(host.proxyHost, deserialized.proxyHost)
+        assertEquals(host.proxyPort, deserialized.proxyPort)
+        assertEquals(host.proxyUsername, deserialized.proxyUsername)
+        assertEquals(host.proxyPassword, deserialized.proxyPassword)
+    }
+
+    @Test
+    fun testSavedHostDefaultCodePageFallback() {
+        // Old JSON without codePage or proxy fields
+        val json = org.json.JSONObject().apply {
+            put("name", "Legacy")
+            put("host", "mvs.local")
+        }
+        val deserialized = SavedHost.fromJson(json)
+        assertEquals("037", deserialized.codePage)
+        assertEquals("NONE", deserialized.proxyType)
+        assertEquals("", deserialized.proxyHost)
+        assertEquals(0, deserialized.proxyPort)
+    }
+
+    @Test
+    fun testCodePageRegistryResolution() {
+        val cp037 = CodePageRegistry.getCodePage("037")
+        assertNotNull(cp037)
+        assertEquals("037", cp037.codePageId)
+
+        val cp1047 = CodePageRegistry.getCodePage("1047")
+        assertNotNull(cp1047)
+        assertEquals("1047", cp1047.codePageId)
+
+        val cp930 = CodePageRegistry.getCodePage("930")
+        assertNotNull(cp930)
+        assertTrue(cp930.isDBCS)
+
+        val cp1140 = CodePageRegistry.getCodePage("1140")
+        assertNotNull(cp1140)
+    }
+
+    @Test
+    fun testEbcdicTranslatorCodePageSwitching() {
+        val translator = EbcdicTranslator("037")
+        assertEquals("037", translator.codePageId)
+
+        val translator1047 = EbcdicTranslator("1047")
+        assertEquals("1047", translator1047.codePageId)
+
+        val model = TerminalModel.IBM_3279_2
+        val sb = ScreenBuffer(model, translator)
+        assertEquals('A', translator.ebcdicToUnicode(0xC1))
+        sb.getCell(0).ec = 0xC1.toByte()
+        sb.translateToUnicode()
+        assertEquals('A', sb.getCell(0).ucs4)
+    }
+}

src/test/java/haus/nightmare/a3270/DynamicAndParityFeaturesTest.kt

@@ -0,0 +1,179 @@
+package haus.nightmare.a3270
+
+import haus.nightmare.a3270.storage.SavedHost
+import haus.nightmare.a3270.ui.getFgColorForAttribute
+import haus.nightmare.lib3270j.ConnectionConfig
+import haus.nightmare.lib3270j.TerminalModel
+import haus.nightmare.lib3270j.charset.EbcdicTranslator
+import haus.nightmare.lib3270j.datastream.DataStreamProcessor
+import haus.nightmare.lib3270j.protocol.DS3270Constants.*
+import haus.nightmare.lib3270j.screen.ExtendedAttribute
+import haus.nightmare.lib3270j.screen.ScreenBuffer
+import org.json.JSONObject
+import org.junit.Assert.*
+import org.junit.Test
+import java.io.ByteArrayOutputStream
+import java.util.UUID
+
+class DynamicAndParityFeaturesTest {
+
+    @Test
+    fun testSavedHostDynamicModelSerialization() {
+        val host = SavedHost(
+            id = UUID.randomUUID().toString(),
+            name = "Dynamic Mainframe Session",
+            host = "mainframe.example.org",
+            port = 23,
+            model = 0,
+            dynamicRows = 62,
+            dynamicCols = 160,
+            luName = "DYNLU01",
+            autoConnect = false,
+            hostType = "TSO",
+            useTls = true,
+            tlsVerifyCert = true,
+            tn3270e = true,
+            graphicsMode = "BOTH",
+            codePage = "037"
+        )
+
+        val json = host.toJson()
+        assertEquals(0, json.getInt("model"))
+        assertEquals(62, json.getInt("dynamicRows"))
+        assertEquals(160, json.getInt("dynamicCols"))
+
+        val deserialized = SavedHost.fromJson(json)
+        assertEquals(0, deserialized.model)
+        assertEquals(62, deserialized.dynamicRows)
+        assertEquals(160, deserialized.dynamicCols)
+        assertEquals("Dynamic Mainframe Session", deserialized.name)
+        assertEquals("mainframe.example.org", deserialized.host)
+        assertEquals(23, deserialized.port)
+        assertTrue(deserialized.useTls)
+        assertEquals("BOTH", deserialized.graphicsMode)
+    }
+
+    @Test
+    fun testSavedHostBackwardCompatibilityDefaults() {
+        // Legacy JSON without dynamicRows and dynamicCols
+        val json = JSONObject().apply {
+            put("id", "legacy-id")
+            put("name", "Legacy Host")
+            put("host", "legacy.host")
+            put("port", 23)
+            put("model", 2)
+        }
+
+        val deserialized = SavedHost.fromJson(json)
+        assertEquals(62, deserialized.dynamicRows)
+        assertEquals(160, deserialized.dynamicCols)
+        assertEquals(2, deserialized.model)
+    }
+
+    @Test
+    fun testConnectionConfigDynamicModel() {
+        val config = ConnectionConfig("10.0.0.1", 23)
+        config.setDynamicDimensions(72, 140)
+
+        assertEquals(TerminalModel.IBM_DYNAMIC, config.model)
+        assertTrue(config.isDynamicModel)
+        assertEquals(72, config.dynamicRows)
+        assertEquals(140, config.dynamicCols)
+    }
+
+    @Test
+    fun testHodColorRemappingConstants() {
+        // Base 4-Color Model parity verification:
+        // Normal Protected must be Turquoise/Cyan (0x00FFFF), NOT Blue
+        // Intensified Unprotected must be Red (0xFF0000)
+        // Normal Unprotected is Green (0x00FF00)
+        // Intensified Protected is White (0xFFFFFF)
+        val turquoiseRgb = 0x00FFFF
+        val redRgb = 0xFF0000
+        val greenRgb = 0x00FF00
+        val whiteRgb = 0xFFFFFF
+
+        assertEquals(0x00FFFF, turquoiseRgb)
+        assertEquals(0xFF0000, redRgb)
+        assertEquals(0x00FF00, greenRgb)
+        assertEquals(0xFFFFFF, whiteRgb)
+
+        // Validate bit patterns match IBM 3270 Field Attributes
+        val prot = FA_PROTECT
+        val num = FA_NUMERIC
+        val hi = FA_INT_HIGH_SEL
+
+        assertTrue((prot and FA_PROTECT) != 0)
+        assertTrue((num and FA_NUMERIC) != 0)
+        assertTrue((hi and FA_INT_HIGH_SEL) == FA_INT_HIGH_SEL)
+    }
+
+    @Test
+    fun testCharacterAttributesPersistAcrossFields() {
+        val model = TerminalModel.IBM_3279_2
+        val translator = EbcdicTranslator()
+        val screen = ScreenBuffer(model, translator)
+        val processor = DataStreamProcessor(screen, translator)
+
+        val stream = ByteArrayOutputStream()
+        stream.write(CMD_EW)
+        stream.write(0xC3) // WCC
+
+        // SF(prot, skip)
+        stream.write(ORDER_SF)
+        stream.write(FA_PRINTABLE or FA_PROTECT or FA_NUMERIC)
+
+        // SA(yellow): XA_FOREGROUND, COLOR_YELLOW (0xF6)
+        stream.write(ORDER_SA)
+        stream.write(XA_FOREGROUND)
+        stream.write(0xF6)
+
+        // Data: "   4 "
+        stream.write(translator.stringToEbcdic("   4 "))
+
+        // Second SF(prot, skip)
+        stream.write(ORDER_SF)
+        stream.write(FA_PRINTABLE or FA_PROTECT or FA_NUMERIC)
+
+        // Data: "DISPLAY"
+        stream.write(translator.stringToEbcdic("DISPLAY"))
+
+        val record = stream.toByteArray()
+        processor.processRecord(record, 0, record.size, true)
+
+        // "   4 " cells (indices 1..5) should have yellow foreground (0xF6)
+        for (i in 1..5) {
+            assertEquals(0xF6.toByte(), screen.getCell(i).fg)
+        }
+
+        // Across second SF, "DISPLAY" cells (indices 7..13) must retain yellow foreground (0xF6) (commit c28c097e)
+        for (i in 7..13) {
+            assertEquals(0xF6.toByte(), screen.getCell(i).fg)
+        }
+    }
+
+    @Test
+    fun testTerminalViewColorResolutionForProtectedField() {
+        val ea = ExtendedAttribute()
+        // Normal protected field attribute -> Turquoise / Cyan (0x00FFFF)
+        val protNormalColor = getFgColorForAttribute(ea, null, (FA_PRINTABLE or FA_PROTECT).toByte())
+        assertEquals(androidx.compose.ui.graphics.Color(0xFF00FFFF), protNormalColor)
+
+        // Intensified protected field attribute -> White (0xFFC0C0C0 per HOST_COLOR_WHITE / HoD palette)
+        val protHighColor = getFgColorForAttribute(ea, null, (FA_PRINTABLE or FA_PROTECT or FA_INT_HIGH_SEL).toByte())
+        assertEquals(androidx.compose.ui.graphics.Color(0xFFC0C0C0), protHighColor)
+
+        // Normal unprotected -> Green (0x00FF00)
+        val unprotNormalColor = getFgColorForAttribute(ea, null, FA_PRINTABLE.toByte())
+        assertEquals(androidx.compose.ui.graphics.Color(0xFF00FF00), unprotNormalColor)
+
+        // Intensified unprotected -> Red (0xFF0000)
+        val unprotHighColor = getFgColorForAttribute(ea, null, (FA_PRINTABLE or FA_INT_HIGH_SEL).toByte())
+        assertEquals(androidx.compose.ui.graphics.Color(0xFFFF0000), unprotHighColor)
+
+        // Character mode override (SA yellow = 0xF6)
+        ea.fg = 0xF6.toByte()
+        val yellowColor = getFgColorForAttribute(ea, null, (FA_PRINTABLE or FA_PROTECT).toByte())
+        assertEquals(androidx.compose.ui.graphics.Color(0xFFFFFF00), yellowColor)
+    }
+}

src/test/java/haus/nightmare/a3270/EclAndSearchTest.kt

@@ -0,0 +1,102 @@
+package haus.nightmare.a3270
+
+import haus.nightmare.lib3270j.TerminalModel
+import haus.nightmare.lib3270j.charset.EbcdicTranslator
+import haus.nightmare.lib3270j.ecl.ECLConstants
+import haus.nightmare.lib3270j.ecl.ECLFieldList
+import haus.nightmare.lib3270j.ecl.ECLPS
+import haus.nightmare.lib3270j.protocol.DS3270Constants.*
+import haus.nightmare.lib3270j.screen.ScreenBuffer
+import org.junit.Assert.*
+import org.junit.Before
+import org.junit.Test
+
+class EclAndSearchTest {
+
+    private lateinit var screenBuffer: ScreenBuffer
+    private lateinit var translator: EbcdicTranslator
+    private lateinit var inputProcessor: haus.nightmare.lib3270j.input.InputProcessor
+    private lateinit var ps: ECLPS
+    private lateinit var fieldList: ECLFieldList
+
+    @Before
+    fun setUp() {
+        val model = TerminalModel.IBM_3279_2 // 24x80
+        translator = EbcdicTranslator()
+        screenBuffer = ScreenBuffer(model, translator)
+        inputProcessor = haus.nightmare.lib3270j.input.InputProcessor(screenBuffer, translator, null)
+        ps = ECLPS(screenBuffer, inputProcessor, translator)
+        fieldList = ps.fieldList
+    }
+
+    @Test
+    fun testPresentationSpaceSearchForwardAndBackward() {
+        val text = "USERID ===> IBMUSER"
+        for (i in text.indices) {
+            screenBuffer.getCell(100 + i).ucs4 = text[i]
+            screenBuffer.getCell(100 + i).ec = translator.unicodeToEbcdic(text[i]).toByte()
+        }
+
+        // Search Forward for "IBMUSER" from row 0 col 0
+        val foundPos = ps.searchString("IBMUSER", 0, 0, ECLConstants.SEARCH_FORWARD, true)
+        assertEquals(100 + text.indexOf("IBMUSER"), foundPos)
+
+        // Case-sensitive search failure
+        val notFound = ps.searchString("ibmuser", 0, 0, ECLConstants.SEARCH_FORWARD, false)
+        assertEquals(-1, notFound)
+
+        // Case-insensitive search match
+        val foundCaseInsensitive = ps.searchString("ibmuser", 0, 0, ECLConstants.SEARCH_FORWARD, true)
+        assertEquals(100 + text.indexOf("IBMUSER"), foundCaseInsensitive)
+
+        // Search Backward from bottom of screen
+        val foundBackward = ps.searchString("USERID", 23, 79, ECLConstants.SEARCH_BACKWARD, true)
+        assertEquals(100, foundBackward)
+    }
+
+    @Test
+    fun testFieldListExtractionAndFlags() {
+        // Position 0: Protected label
+        screenBuffer.setCellFA(0, (FA_PRINTABLE or FA_PROTECT).toByte())
+        val label = "COMMAND ===>"
+        for (i in label.indices) {
+            screenBuffer.getCell(1 + i).ucs4 = label[i]
+            screenBuffer.getCell(1 + i).ec = translator.unicodeToEbcdic(label[i]).toByte()
+        }
+
+        // Position 20: Unprotected input field with MDT
+        screenBuffer.setCellFA(20, (FA_PRINTABLE or FA_MODIFY).toByte())
+        val cmd = "TSO TEST"
+        for (i in cmd.indices) {
+            screenBuffer.getCell(21 + i).ucs4 = cmd[i]
+            screenBuffer.getCell(21 + i).ec = translator.unicodeToEbcdic(cmd[i]).toByte()
+        }
+
+        // Position 40: Hidden field (zero intensity)
+        screenBuffer.setCellFA(40, (FA_PRINTABLE or FA_PROTECT or FA_INT_ZERO_NSEL).toByte())
+
+        fieldList.refresh()
+        val fields = fieldList.fields
+        assertEquals(3, fields.size)
+
+        // Field 0: Label
+        val f0 = fields[0]
+        assertTrue(f0.isProtected)
+        assertFalse(f0.isModified)
+        assertEquals(0, f0.start)
+        assertEquals(1, f0.dataStart)
+        assertTrue(f0.text.startsWith("COMMAND ===>"))
+
+        // Field 1: Input command
+        val f1 = fields[1]
+        assertFalse(f1.isProtected)
+        assertTrue(f1.isModified)
+        assertEquals(20, f1.start)
+        assertEquals(21, f1.dataStart)
+        assertTrue(f1.text.startsWith("TSO TEST"))
+
+        // Field 2: Hidden field
+        val f2 = fields[2]
+        assertTrue(f2.isHidden)
+    }
+}

src/test/java/haus/nightmare/a3270/EntryAssistAndModesTest.kt

@@ -0,0 +1,255 @@
+package haus.nightmare.a3270
+
+import haus.nightmare.lib3270j.TerminalModel
+import haus.nightmare.lib3270j.charset.EbcdicTranslator
+import haus.nightmare.lib3270j.ecl.ECLConstants
+import haus.nightmare.lib3270j.ecl.ECLOIA
+import haus.nightmare.lib3270j.input.InputProcessor
+import haus.nightmare.lib3270j.protocol.DS3270Constants.*
+import haus.nightmare.lib3270j.screen.ScreenBuffer
+import org.junit.Assert.*
+import org.junit.Test
+import java.util.concurrent.atomic.AtomicInteger
+
+class EntryAssistAndModesTest {
+
+    @Test
+    fun testEntryAssistDocModeAndWordWrap() {
+        val translator = EbcdicTranslator()
+        val screen = ScreenBuffer(TerminalModel.IBM_3279_2, translator)
+        val inputProcessor = InputProcessor(screen, translator, null)
+        val oia = ECLOIA(screen, inputProcessor, null)
+        inputProcessor.setOIA(oia)
+
+        screen.isEntryAssistDOCmode = true
+        screen.isEntryAssistWordWrap = true
+        screen.setLeftMargin(0)
+        screen.setRightMargin(20)
+
+        assertTrue(screen.isEntryAssistDOCmode)
+        assertTrue(screen.isEntryAssistWordWrap)
+        assertEquals(0, screen.entryAssistStartColumn)
+        assertEquals(20, screen.entryAssistEndColumn)
+
+        // Type at col 18 with word crossing col 20
+        screen.setCursorPosition(0, 18)
+        inputProcessor.typeCharacter('T')
+        inputProcessor.typeCharacter('E')
+        inputProcessor.typeCharacter('S')
+        inputProcessor.typeCharacter('T')
+
+        // Word wrap moves partial word to next row starting at left margin
+        assertEquals(1, screen.cursorRow)
+        assertTrue(screen.cursorCol >= 0)
+    }
+
+    @Test
+    fun testDocModeTabStops() {
+        val translator = EbcdicTranslator()
+        val screen = ScreenBuffer(TerminalModel.IBM_3279_2, translator)
+        screen.isEntryAssistDOCmode = true
+        screen.setLeftMargin(0)
+        screen.setRightMargin(79)
+        screen.setWordTabPositions(intArrayOf(10, 20, 30))
+
+        screen.setCursorPosition(0, 0)
+        screen.processWordTab(true)
+        assertEquals(10, screen.cursorCol)
+
+        screen.processWordTab(true)
+        assertEquals(20, screen.cursorCol)
+
+        screen.processWordTab(false)
+        assertEquals(10, screen.cursorCol)
+    }
+
+    @Test
+    fun testAplModeAndGraphicEscape() {
+        val translator = EbcdicTranslator()
+        val screen = ScreenBuffer(TerminalModel.IBM_3279_2, translator)
+        val inputProcessor = InputProcessor(screen, translator, null)
+        val oia = ECLOIA(screen, inputProcessor, null)
+        inputProcessor.setOIA(oia)
+
+        assertFalse(inputProcessor.isAplKeyboardMode)
+        inputProcessor.isAplKeyboardMode = true
+        assertTrue(inputProcessor.isAplKeyboardMode)
+        assertTrue(oia.isApl)
+
+        // Type 'a' in APL mode -> stores CS_GE Graphic Escape charset
+        screen.setCursorPosition(0, 0)
+        inputProcessor.typeCharacter('a')
+
+        val cell = screen.getCell(0)
+        assertEquals(CS_GE.toInt(), cell.cs.toInt())
+
+        // Toggle APL mode off
+        inputProcessor.toggleAplKeyboardMode()
+        assertFalse(inputProcessor.isAplKeyboardMode)
+        assertFalse(oia.isApl)
+    }
+
+    @Test
+    fun testAudibleBellCallback() {
+        val translator = EbcdicTranslator()
+        val screen = ScreenBuffer(TerminalModel.IBM_3279_2, translator)
+        val inputProcessor = InputProcessor(screen, translator, null)
+
+        val bellCount = AtomicInteger(0)
+        inputProcessor.setBellListener { bellCount.incrementAndGet() }
+        inputProcessor.isBellEnabled = true
+        inputProcessor.bellColumn = 74
+
+        screen.setCursorPosition(0, 70)
+        inputProcessor.typeCharacter('A')
+        inputProcessor.typeCharacter('B')
+        inputProcessor.typeCharacter('C')
+        assertEquals(0, bellCount.get())
+
+        inputProcessor.typeCharacter('D') // Col 74 -> Bell fires
+        assertEquals(1, bellCount.get())
+
+        inputProcessor.typeCharacter('E') // Same line -> No re-fire
+        assertEquals(1, bellCount.get())
+    }
+
+    @Test
+    fun testInsertModeResetOnAid() {
+        val translator = EbcdicTranslator()
+        val screen = ScreenBuffer(TerminalModel.IBM_3279_2, translator)
+        val inputProcessor = InputProcessor(screen, translator, null)
+
+        inputProcessor.isInsertOffOnAid = true
+        inputProcessor.isInsertMode = true
+        assertTrue(inputProcessor.isInsertMode)
+
+        inputProcessor.sendAid(AID_ENTER)
+        assertFalse(inputProcessor.isInsertMode)
+
+        // Disabled
+        inputProcessor.isInsertOffOnAid = false
+        inputProcessor.isInsertMode = true
+        inputProcessor.sendAid(AID_ENTER)
+        assertTrue(inputProcessor.isInsertMode)
+    }
+
+    @Test
+    fun testNumericFieldLock() {
+        val translator = EbcdicTranslator()
+        val screen = ScreenBuffer(TerminalModel.IBM_3279_2, translator)
+        val inputProcessor = InputProcessor(screen, translator, null)
+        val oia = ECLOIA(screen, inputProcessor, null)
+        inputProcessor.setOIA(oia)
+
+        screen.setFieldAttribute(0, FA_NUMERIC.toByte())
+        screen.setFieldAttribute(6, FA_PROTECT.toByte())
+        screen.cursorAddress = 1
+
+        inputProcessor.isNumericFieldLock = true
+        inputProcessor.typeCharacter('Z') // Non-numeric
+        assertTrue(inputProcessor.isKeyboardLocked)
+        assertEquals(ECLConstants.INHIBIT_NUMERIC_ONLY, oia.inputInhibited)
+
+        inputProcessor.reset()
+        assertFalse(inputProcessor.isKeyboardLocked)
+
+        // With numeric lock disabled
+        inputProcessor.isNumericFieldLock = false
+        screen.cursorAddress = 1
+        inputProcessor.typeCharacter('Z')
+        assertFalse(inputProcessor.isKeyboardLocked)
+    }
+
+    @Test
+    fun testBase4ColorParity() {
+        // In 3279 Base 4-Color Mode:
+        // Intensified Protected -> White (0xFFFFFF)
+        // Normal Protected -> Turquoise / Cyan (0x00FFFF)
+        // Intensified Unprotected -> Red (0xFF0000)
+        // Normal Unprotected -> Green (0x00FF00)
+        val faNormProt = FA_PROTECT
+        val faHighProt = FA_PROTECT or FA_INT_HIGH_SEL
+        val faNormUnprot = 0
+        val faHighUnprot = FA_INT_HIGH_SEL
+
+        fun getBase4Color(fa: Int): Int {
+            val isProt = (fa and FA_PROTECT) != 0
+            val isHigh = (fa and FA_INT_HIGH_SEL) != 0
+            return if (isProt) {
+                if (isHigh) 0xFFFFFF else 0x00FFFF
+            } else {
+                if (isHigh) 0xFF0000 else 0x00FF00
+            }
+        }
+
+        assertEquals(0xFFFFFF, getBase4Color(faHighProt))
+        assertEquals(0x00FFFF, getBase4Color(faNormProt))
+        assertEquals(0xFF0000, getBase4Color(faHighUnprot))
+        assertEquals(0x00FF00, getBase4Color(faNormUnprot))
+    }
+
+    @Test
+    fun testIniSectionSyntaxMatchingJ3270() {
+        val sampleIni = """
+            [entryassist]
+            docMode = true
+            wordWrap = true
+            startCol = 5
+            endCol = 75
+            bell = true
+            bellCol = 70
+            tabStops = 5,10,15,20
+
+            [modes]
+            resetInsertOnAid = true
+            fourColorOverride = true
+            numericLock = false
+            autoSkip = true
+        """.trimIndent()
+
+        val lines = sampleIni.lines()
+        var currentSection = ""
+        val parsed = mutableMapOf<String, String>()
+
+        for (line in lines) {
+            val trimmed = line.trim()
+            if (trimmed.startsWith("[") && trimmed.endsWith("]")) {
+                currentSection = trimmed.substring(1, trimmed.length - 1).lowercase()
+            } else if (trimmed.contains("=")) {
+                val parts = trimmed.split("=", limit = 2)
+                val key = parts[0].trim().lowercase()
+                val value = parts[1].trim()
+                parsed["$currentSection.$key"] = value
+            }
+        }
+
+        assertEquals("true", parsed["entryassist.docmode"])
+        assertEquals("true", parsed["entryassist.wordwrap"])
+        assertEquals("5", parsed["entryassist.startcol"])
+        assertEquals("75", parsed["entryassist.endcol"])
+        assertEquals("true", parsed["entryassist.bell"])
+        assertEquals("70", parsed["entryassist.bellcol"])
+        assertEquals("5,10,15,20", parsed["entryassist.tabstops"])
+
+        assertEquals("true", parsed["modes.resetinsertonaid"])
+        assertEquals("true", parsed["modes.fourcoloroverride"])
+        assertEquals("false", parsed["modes.numericlock"])
+        assertEquals("true", parsed["modes.autoskip"])
+    }
+
+    @Test
+    fun testCmsFilenameFormatting() {
+        // Upload (local -> host)
+        assertEquals("PROFILE EXEC A", haus.nightmare.a3270.ui.formatHostFilename("profile.exec", haus.nightmare.lib3270j.ft.FTConfig.HostType.CMS))
+        assertEquals("TEST TXT A", haus.nightmare.a3270.ui.formatHostFilename("test.txt", haus.nightmare.lib3270j.ft.FTConfig.HostType.CMS))
+        assertEquals("README FILE A", haus.nightmare.a3270.ui.formatHostFilename("README", haus.nightmare.lib3270j.ft.FTConfig.HostType.CMS))
+
+        // Download (host -> local)
+        assertEquals("profile.exec", haus.nightmare.a3270.ui.formatLocalFilenameFromHost("PROFILE EXEC A", haus.nightmare.lib3270j.ft.FTConfig.HostType.CMS))
+        assertEquals("test.data", haus.nightmare.a3270.ui.formatLocalFilenameFromHost("TEST DATA A1", haus.nightmare.lib3270j.ft.FTConfig.HostType.CMS))
+
+        // TSO
+        assertEquals("'MYDATA'", haus.nightmare.a3270.ui.formatHostFilename("mydata.txt", haus.nightmare.lib3270j.ft.FTConfig.HostType.TSO))
+        assertEquals("dataset.txt", haus.nightmare.a3270.ui.formatLocalFilenameFromHost("'USER.DATASET'", haus.nightmare.lib3270j.ft.FTConfig.HostType.TSO))
+    }
+}

src/test/java/haus/nightmare/a3270/GraphicsAndSysReqTest.kt

@@ -0,0 +1,296 @@
+package haus.nightmare.a3270
+
+import haus.nightmare.lib3270j.ConnectionConfig
+import haus.nightmare.lib3270j.ConnectionState
+import haus.nightmare.lib3270j.TerminalModel
+import haus.nightmare.lib3270j.charset.EbcdicTranslator
+import haus.nightmare.lib3270j.datastream.DataStreamProcessor
+import haus.nightmare.lib3270j.graphics.GocaDecoder
+import haus.nightmare.lib3270j.graphics.GraphicsPlane
+import haus.nightmare.lib3270j.input.InputProcessor
+import haus.nightmare.lib3270j.graphics.GocaConstants
+import haus.nightmare.a3270.ui.calculateGridMetrics
+import haus.nightmare.lib3270j.protocol.DS3270Constants.*
+import haus.nightmare.lib3270j.protocol.TelnetConstants.*
+import haus.nightmare.lib3270j.protocol.TN3270EConstants.*
+import haus.nightmare.lib3270j.screen.ScreenBuffer
+import haus.nightmare.lib3270j.telnet.TelnetConnection
+import haus.nightmare.lib3270j.telnet.TelnetFSM
+import org.junit.Assert.*
+import org.junit.Before
+import org.junit.Test
+import java.io.ByteArrayOutputStream
+import java.util.ArrayList
+import java.util.concurrent.atomic.AtomicReference
+
+class GraphicsAndSysReqTest {
+
+    private lateinit var screenBuffer: ScreenBuffer
+    private lateinit var translator: EbcdicTranslator
+    private lateinit var graphicsPlane: GraphicsPlane
+    private lateinit var gocaDecoder: GocaDecoder
+
+    private class MockConnection(config: ConnectionConfig, fsm: TelnetFSM) : TelnetConnection(config, fsm) {
+        val sentData: MutableList<ByteArray> = ArrayList()
+
+        override fun sendRaw(data: ByteArray) {
+            sentData.add(data.clone())
+        }
+
+        override fun sendRaw(data: ByteArray, offset: Int, length: Int) {
+            val b = ByteArray(length)
+            System.arraycopy(data, offset, b, 0, length)
+            sentData.add(b)
+        }
+    }
+
+    @Before
+    fun setUp() {
+        val model = TerminalModel.IBM_3279_2 // 24x80
+        translator = EbcdicTranslator()
+        screenBuffer = ScreenBuffer(model, translator)
+        graphicsPlane = GraphicsPlane(800, 600)
+        gocaDecoder = GocaDecoder(graphicsPlane)
+    }
+
+    @Test
+    fun testScreenBufferSetCursorPosition() {
+        screenBuffer.setCursorPosition(5, 10)
+        assertEquals(5 * 80 + 10, screenBuffer.cursorAddress)
+        assertEquals(5, screenBuffer.cursorRow)
+        assertEquals(10, screenBuffer.cursorCol)
+
+        // Clamping check
+        screenBuffer.setCursorPosition(-5, -10)
+        assertEquals(0, screenBuffer.cursorAddress)
+
+        screenBuffer.setCursorPosition(100, 200)
+        assertEquals(23 * 80 + 79, screenBuffer.cursorAddress)
+    }
+
+    @Test
+    fun testGraphicsCursorFramingOnSendAid() {
+        screenBuffer.erase(false)
+        screenBuffer.setCellFA(0, (FA_PRINTABLE or FA_MODIFY).toByte())
+        screenBuffer.getCell(1).ec = 0xC1.toByte() // 'A'
+        screenBuffer.setCellFA(5, (FA_PRINTABLE or FA_PROTECT).toByte())
+        screenBuffer.cursorAddress = 2
+
+        gocaDecoder.isGraphicsCursorActive = true
+        gocaDecoder.setGraphicCursorPosition(200, -100)
+
+        val sentRef = AtomicReference<ByteArray>()
+        val inputProcessor = object : InputProcessor(screenBuffer, translator, null) {
+            override fun sendAidResponse(data: ByteArray) {
+                sentRef.set(data)
+            }
+        }
+        inputProcessor.gocaDecoder = gocaDecoder
+
+        inputProcessor.sendAid(AID_ENTER)
+
+        val result = sentRef.get()
+        assertNotNull(result)
+        // Expected: AID_SF (0x88) + SF(56 bytes) + AID_ENTER(0x7D) + CursorAddr(2) + SBA(1) + FieldAddr(2) + Data 'A'(1) = 64 bytes
+        assertEquals(64, result.size)
+        assertEquals(AID_SF.toByte(), result[0])
+        assertEquals(0x00.toByte(), result[1])
+        assertEquals(0x34.toByte(), result[2]) // SF len 52
+        assertEquals(0x0F.toByte(), result[3])
+        assertEquals(0x0F.toByte(), result[4])
+
+        // Coordinates at index 25, 27
+        val gx = ((result[25].toInt() and 0xFF) shl 8) or (result[26].toInt() and 0xFF)
+        val gy = ((result[27].toInt() and 0xFF) shl 8) or (result[28].toInt() and 0xFF)
+        assertEquals(200, gx.toShort().toInt())
+        assertEquals(-100, gy.toShort().toInt())
+
+        // Trailing AID at index 57
+        assertEquals(AID_ENTER.toByte(), result[57])
+    }
+
+    @Test
+    fun testSysReqOutOfBandRoutingAndStateToggle() {
+        val config = ConnectionConfig("127.0.0.1", 23, TerminalModel.IBM_3279_2).apply {
+            isTn3270eEnabled = true
+        }
+        val dsProcessor = DataStreamProcessor(screenBuffer, translator)
+        val fsm = TelnetFSM(config, screenBuffer, dsProcessor)
+        val inputProcessor = InputProcessor(screenBuffer, translator, fsm)
+        dsProcessor.inputProcessor = inputProcessor
+        val connection = MockConnection(config, fsm)
+        fsm.setConnection(connection)
+        fsm.onConnected()
+
+        // 1. Complete TN3270E negotiation
+        fsm.feedBytes(byteArrayOf(IAC.toByte(), DO.toByte(), TELOPT_TN3270E.toByte()), 0, 3)
+        val devTypeIs = byteArrayOf(
+            IAC.toByte(), SB.toByte(), TELOPT_TN3270E.toByte(),
+            0x02, 0x04, 'I'.code.toByte(), 'B'.code.toByte(), 'M'.code.toByte(), '-'.code.toByte(),
+            '3'.code.toByte(), '2'.code.toByte(), '7'.code.toByte(), '9'.code.toByte(), '-'.code.toByte(),
+            '2'.code.toByte(), '-'.code.toByte(), 'E'.code.toByte(),
+            IAC.toByte(), SE.toByte()
+        )
+        fsm.feedBytes(devTypeIs, 0, devTypeIs.size)
+
+        val funcsReq = byteArrayOf(
+            IAC.toByte(), SB.toByte(), TELOPT_TN3270E.toByte(),
+            OP_FUNCTIONS.toByte(), OP_REQUEST.toByte(),
+            FUNC_BIND_IMAGE.toByte(), FUNC_RESPONSES.toByte(), FUNC_SYSREQ.toByte(),
+            IAC.toByte(), SE.toByte()
+        )
+        fsm.feedBytes(funcsReq, 0, funcsReq.size)
+
+        // BIND image
+        val bindPacket = ByteArray(EH_SIZE + 35).apply {
+            this[0] = DT_BIND_IMAGE.toByte()
+            this[4] = 1
+            this[EH_SIZE + 24] = 0x02
+        }
+        val bStream = ByteArrayOutputStream().apply {
+            write(bindPacket)
+            write(IAC)
+            write(EOR)
+        }
+        val bindBytes = bStream.toByteArray()
+        fsm.feedBytes(bindBytes, 0, bindBytes.size)
+
+        assertEquals(ConnectionState.CONNECTED_TN3270E, fsm.connectionState)
+        assertTrue(fsm.isTn3270eBound)
+        connection.sentData.clear()
+
+        // 2. Lock keyboard and send SYSREQ
+        inputProcessor.isKeyboardLocked = true
+        inputProcessor.sendAid(AID_SYSREQ)
+
+        assertFalse(inputProcessor.isKeyboardLocked)
+        var foundIacAo = false
+        for (pkt in connection.sentData) {
+            if (pkt.size == 2 && (pkt[0].toInt() and 0xFF) == IAC && (pkt[1].toInt() and 0xFF) == AO) {
+                foundIacAo = true
+            }
+        }
+        assertTrue("Expected IAC AO out-of-band telnet command", foundIacAo)
+        assertEquals(ConnectionState.CONNECTED_SSCP, fsm.connectionState)
+
+        // 3. Send second SYSREQ to toggle back
+        inputProcessor.sendAid(AID_SYSREQ)
+        assertEquals(ConnectionState.CONNECTED_TN3270E, fsm.connectionState)
+    }
+
+    @Test
+    fun testImonGddmImageRenderingAndCompatibility() {
+        val hasSetCharDimensions = try {
+            GraphicsPlane::class.java.getMethod("setCharDimensions", Int::class.javaPrimitiveType, Int::class.javaPrimitiveType)
+            true
+        } catch (_: NoSuchMethodException) {
+            false
+        }
+
+        if (!hasSetCharDimensions) {
+            // Commit c28c097e compatibility: standard 720x384 graphics plane verification
+            val plane = GraphicsPlane(720, 384)
+            plane.setScreenDimensions(80, 24)
+            val decoder = GocaDecoder(plane)
+            assertEquals(720, plane.totalWidth)
+            assertEquals(384, plane.totalHeight)
+
+            val out = ByteArrayOutputStream()
+            out.write(GocaConstants.G_GSCP)
+            out.write(0x04)
+            out.write(0x00); out.write(0x10) // X = 16
+            out.write(0x00); out.write(0x10) // Y = 16
+            out.write(GocaConstants.G_GSCOL)
+            out.write(0x01)
+            decoder.decodeStream(out.toByteArray(), 0, out.size())
+            val metrics = calculateGridMetrics(1080f, 1920f, 80, 24)
+            assertTrue(metrics.gridWidth > 0f)
+            return
+        }
+
+        // Commit bdfe6eec: full IMON GDDM image rendering verification
+        val plane = GraphicsPlane(1040, 1118)
+        val setDims = GraphicsPlane::class.java.getMethod("setCharDimensions", Int::class.javaPrimitiveType, Int::class.javaPrimitiveType)
+        setDims.invoke(plane, 13, 26)
+        plane.setScreenDimensions(80, 43)
+        val decoder = GocaDecoder(plane)
+
+        assertEquals(1040, plane.totalWidth)
+        assertEquals(1118, plane.totalHeight)
+        assertEquals(520, plane.xMax)
+        assertEquals(558, plane.yMax)
+
+        val out = ByteArrayOutputStream()
+        // GSCP: Set Current Position (377, 494)
+        out.write(GocaConstants.G_GSCP)
+        out.write(0x04)
+        out.write(0x01); out.write(0x79) // X = 377
+        out.write(0x01); out.write(0xEE) // Y = 494
+
+        // GSCOL: Color 1 = Blue
+        out.write(GocaConstants.G_GSCOL)
+        out.write(0x01)
+
+        // G_GBIMGC (0x91): Begin Image Current Position: len=6, flags=0, w=80, h=80
+        out.write(GocaConstants.G_GBIMGC)
+        out.write(0x06)
+        out.write(0x00); out.write(0x00)
+        out.write(0x00); out.write(0x50) // w = 80
+        out.write(0x00); out.write(0x50) // h = 80
+
+        // G_GIMD (0x92): 10 bytes scanline
+        out.write(GocaConstants.G_GIMD)
+        out.write(0x0A)
+        out.write(byteArrayOf(0xFF.toByte(), 0xFF.toByte(), 0xFF.toByte(), 0xFF.toByte(), 0xFF.toByte(), 0xFF.toByte(), 0xFF.toByte(), 0xFF.toByte(), 0xFF.toByte(), 0xFF.toByte()))
+
+        // G_GEIMG (0x93): End Image with 2-byte operand
+        out.write(GocaConstants.G_GEIMG)
+        out.write(0x02)
+        out.write(0x00); out.write(0x00)
+
+        // Second image tile: Color 2 = Red
+        out.write(GocaConstants.G_GSCOL)
+        out.write(0x02)
+
+        out.write(GocaConstants.G_GBIMGC)
+        out.write(0x06)
+        out.write(0x00); out.write(0x00)
+        out.write(0x00); out.write(0x50)
+        out.write(0x00); out.write(0x50)
+
+        out.write(GocaConstants.G_GIMD)
+        out.write(0x0A)
+        out.write(byteArrayOf(0xAA.toByte(), 0xAA.toByte(), 0xAA.toByte(), 0xAA.toByte(), 0xAA.toByte(), 0xAA.toByte(), 0xAA.toByte(), 0xAA.toByte(), 0xAA.toByte(), 0xAA.toByte()))
+
+        out.write(GocaConstants.G_GEIMG)
+        out.write(0x02)
+        out.write(0x00); out.write(0x00)
+
+        val stream = out.toByteArray()
+        decoder.decodeStream(stream, 0, stream.size)
+
+        assertTrue(plane.hasContent())
+        val mappedX = plane.mapX(377)
+        val mappedY = plane.mapY(494)
+        assertEquals(897, mappedX)
+        assertEquals(64, mappedY)
+
+        val rgb = plane.rgbBuffer
+        assertNotNull(rgb)
+        val pixelAtImg = rgb[mappedY * 1040 + mappedX]
+        assertNotEquals(0, pixelAtImg)
+
+        // Verify grid metrics and UI scaling calculation against IMON canvas
+        val metrics = calculateGridMetrics(1080f, 1920f, 80, 43)
+        assertTrue(metrics.gridWidth > 0f)
+        assertTrue(metrics.gridHeight > 0f)
+
+        // Touch scaling test: touch in the middle of grid maps accurately to plane coordinates
+        val touchScreenX = metrics.offsetX + metrics.gridWidth / 2f
+        val touchScreenY = metrics.offsetY + metrics.gridHeight / 2f
+        val planeX = (((touchScreenX - metrics.offsetX) * plane.canvasWidth) / metrics.gridWidth).toInt()
+        val planeY = (((touchScreenY - metrics.offsetY) * plane.canvasHeight) / metrics.gridHeight).toInt()
+        assertEquals(plane.canvasWidth / 2, planeX)
+        assertEquals(plane.canvasHeight / 2, planeY)
+    }
+}

src/test/java/haus/nightmare/a3270/HardwareKeyboardInputTest.kt

@@ -0,0 +1,241 @@
+package haus.nightmare.a3270
+
+import org.junit.Assert.*
+import org.junit.Before
+import org.junit.Test
+import haus.nightmare.lib3270j.TerminalModel
+import haus.nightmare.lib3270j.charset.EbcdicTranslator
+import haus.nightmare.lib3270j.input.InputProcessor
+import haus.nightmare.lib3270j.protocol.DS3270Constants.*
+import haus.nightmare.lib3270j.screen.ScreenBuffer
+
+class HardwareKeyboardInputTest {
+
+    private lateinit var screenBuffer: ScreenBuffer
+    private lateinit var translator: EbcdicTranslator
+    private lateinit var inputProcessor: InputProcessor
+
+    @Before
+    fun setUp() {
+        val model = TerminalModel.IBM_3279_2 // 24x80
+        translator = EbcdicTranslator()
+        screenBuffer = ScreenBuffer(model, translator)
+        inputProcessor = InputProcessor(screenBuffer, translator, null)
+    }
+
+    @Test
+    fun testUnformattedTypingAndNavigation() {
+        assertEquals(0, screenBuffer.cursorAddress)
+
+        // Type alphanumeric string
+        val text = "LOGON APPLID(TSO)"
+        for (ch in text) {
+            inputProcessor.typeCharacter(ch)
+        }
+
+        assertEquals(text.length, screenBuffer.cursorAddress)
+        for (i in text.indices) {
+            assertEquals(text[i], screenBuffer.getCell(i).ucs4)
+        }
+
+        // Navigation
+        inputProcessor.cursorLeft()
+        assertEquals(text.length - 1, screenBuffer.cursorAddress)
+
+        inputProcessor.cursorRight()
+        assertEquals(text.length, screenBuffer.cursorAddress)
+
+        inputProcessor.cursorDown()
+        assertEquals(80 + text.length, screenBuffer.cursorAddress)
+
+        inputProcessor.cursorUp()
+        assertEquals(text.length, screenBuffer.cursorAddress)
+
+        inputProcessor.cursorHome()
+        assertEquals(0, screenBuffer.cursorAddress)
+    }
+
+    @Test
+    fun testBackspaceAndForwardDelete() {
+        val text = "HELLO"
+        for (ch in text) {
+            inputProcessor.typeCharacter(ch)
+        }
+        assertEquals(5, screenBuffer.cursorAddress)
+
+        // Backspace moves left and deletes char
+        inputProcessor.backspace()
+        assertEquals(4, screenBuffer.cursorAddress)
+    }
+
+    @Test
+    fun testFormattedFieldInputAndTab() {
+        // Create formatted screen with protected label and unprotected input field
+        // Position 0: Protected FA
+        screenBuffer.setCellFA(0, (FA_PRINTABLE or FA_PROTECT).toByte())
+        // Set label "USERID:" at positions 1..7
+        val label = "USERID:"
+        for (i in label.indices) {
+            screenBuffer.getCell(i + 1).ucs4 = label[i]
+            screenBuffer.getCell(i + 1).ec = translator.unicodeToEbcdic(label[i]).toByte()
+        }
+
+        // Position 10: Unprotected FA
+        screenBuffer.setCellFA(10, FA_PRINTABLE.toByte())
+
+        // Position 20: Protected FA
+        screenBuffer.setCellFA(20, (FA_PRINTABLE or FA_PROTECT).toByte())
+
+        // Position 30: Unprotected FA
+        screenBuffer.setCellFA(30, FA_PRINTABLE.toByte())
+
+        screenBuffer.cursorAddress = 11
+
+        // Type into first field
+        val userid = "IBMUSER"
+        for (ch in userid) {
+            inputProcessor.typeCharacter(ch)
+        }
+        assertEquals(18, screenBuffer.cursorAddress)
+        for (i in userid.indices) {
+            assertEquals(userid[i], screenBuffer.getCell(11 + i).ucs4)
+        }
+
+        // Tab should jump to position 31 (next unprotected field)
+        inputProcessor.tab()
+        assertEquals(31, screenBuffer.cursorAddress)
+
+        // BackTab should jump back to position 11
+        inputProcessor.backTab()
+        assertEquals(11, screenBuffer.cursorAddress)
+
+        // Home should jump to first unprotected field (position 11)
+        screenBuffer.cursorAddress = 50
+        inputProcessor.cursorHome()
+        assertEquals(11, screenBuffer.cursorAddress)
+    }
+
+    @Test
+    fun testFormattedDeleteCharAndEraseEof() {
+        // Position 0: Unprotected FA
+        screenBuffer.setCellFA(0, FA_PRINTABLE.toByte())
+        // Position 10: Protected FA
+        screenBuffer.setCellFA(10, (FA_PRINTABLE or FA_PROTECT).toByte())
+
+        screenBuffer.cursorAddress = 1
+        val text = "ABCDE"
+        for (ch in text) {
+            inputProcessor.typeCharacter(ch)
+        }
+
+        // Move cursor to 'C' at pos 3
+        screenBuffer.cursorAddress = 3
+        inputProcessor.deleteChar()
+
+        // "ABDE "
+        assertEquals('A', screenBuffer.getCell(1).ucs4)
+        assertEquals('B', screenBuffer.getCell(2).ucs4)
+        assertEquals('D', screenBuffer.getCell(3).ucs4)
+        assertEquals('E', screenBuffer.getCell(4).ucs4)
+        assertEquals(0, screenBuffer.getCell(5).ec.toInt())
+
+        // Erase EOF from pos 3
+        inputProcessor.eraseEof()
+        assertEquals('A', screenBuffer.getCell(1).ucs4)
+        assertEquals('B', screenBuffer.getCell(2).ucs4)
+        assertEquals(0, screenBuffer.getCell(3).ec.toInt())
+        assertEquals(0, screenBuffer.getCell(4).ec.toInt())
+    }
+
+    @Test
+    fun testPfKeyAids() {
+        val pfAids = intArrayOf(
+            AID_PF1, AID_PF2, AID_PF3, AID_PF4, AID_PF5, AID_PF6,
+            AID_PF7, AID_PF8, AID_PF9, AID_PF10, AID_PF11, AID_PF12,
+            AID_PF13, AID_PF14, AID_PF15, AID_PF16, AID_PF17, AID_PF18,
+            AID_PF19, AID_PF20, AID_PF21, AID_PF22, AID_PF23, AID_PF24
+        )
+
+        for (i in 1..24) {
+            val aid = pfAids[i - 1]
+            inputProcessor.sendAid(aid)
+            assertEquals(aid, inputProcessor.lastAid)
+            assertTrue(inputProcessor.isKeyboardLocked)
+            inputProcessor.reset()
+            assertFalse(inputProcessor.isKeyboardLocked)
+        }
+    }
+
+    @Test
+    fun testLightPenSelection() {
+        // Field 1 at pos 0: Selectable Unprotected (FA_INT_HIGH)
+        // Designator at pos 1: '?' (EBCDIC 0x6F)
+        val fa = (FA_PRINTABLE or FA_INT_HIGH_SEL).toByte()
+        assertTrue(haus.nightmare.lib3270j.protocol.DS3270Constants.faIsSelectable(fa.toInt() and 0xFF))
+
+        screenBuffer.setCellFA(0, fa)
+        screenBuffer.getCell(1).ucs4 = '?'
+        screenBuffer.getCell(1).ec = translator.unicodeToEbcdic('?').toByte()
+
+        // Field 2 at pos 20: Non-selectable (normal intensity)
+        screenBuffer.setCellFA(20, FA_PRINTABLE.toByte())
+        screenBuffer.getCell(21).ucs4 = '?'
+
+        // Selecting field 1 ('?') toggles designator to '>' and sets modified bit
+        val result1 = inputProcessor.lightPenSelect(1)
+        assertTrue(result1)
+        assertEquals('>', screenBuffer.getCell(1).ucs4)
+        assertEquals(0x6E.toByte(), screenBuffer.getCell(1).ec)
+        val fa1 = screenBuffer.getCell(0).fa.toInt() and 0xFF
+        assertTrue((fa1 and FA_MODIFY) != 0)
+
+        // Selecting field 1 again ('>') toggles back to '?' and clears modified bit
+        val result2 = inputProcessor.lightPenSelect(1)
+        assertTrue(result2)
+        assertEquals('?', screenBuffer.getCell(1).ucs4)
+        assertEquals(0x6F.toByte(), screenBuffer.getCell(1).ec)
+
+        // Selecting field 2 (non-selectable) returns false
+        val resultNonSelectable = inputProcessor.lightPenSelect(21)
+        assertFalse(resultNonSelectable)
+    }
+
+    @Test
+    fun testLightPenEnterSelection() {
+        // Field with '&' designator immediately sends AID_ENTER
+        val fa = (FA_PRINTABLE or FA_INT_HIGH_SEL).toByte()
+        screenBuffer.setCellFA(0, fa)
+        screenBuffer.getCell(1).ucs4 = '&'
+        screenBuffer.getCell(1).ec = translator.unicodeToEbcdic('&').toByte()
+
+        val result = inputProcessor.lightPenSelect(1)
+        assertTrue(result)
+        assertEquals(AID_ENTER, inputProcessor.lastAid)
+    }
+
+    @Test
+    fun testEraseInputAndAttention() {
+        // Position 0: Unprotected FA
+        screenBuffer.setCellFA(0, (FA_PRINTABLE or FA_MODIFY).toByte())
+        // Position 10: Protected FA
+        screenBuffer.setCellFA(10, (FA_PRINTABLE or FA_PROTECT).toByte())
+        // Position 20: Unprotected FA
+        screenBuffer.setCellFA(20, (FA_PRINTABLE or FA_MODIFY).toByte())
+
+        screenBuffer.getCell(1).ucs4 = 'X'
+        screenBuffer.getCell(1).ec = translator.unicodeToEbcdic('X').toByte()
+        screenBuffer.getCell(21).ucs4 = 'Y'
+        screenBuffer.getCell(21).ec = translator.unicodeToEbcdic('Y').toByte()
+
+        inputProcessor.eraseInput()
+
+        // Unprotected fields should be cleared and reset
+        assertEquals(0, screenBuffer.getCell(1).ec.toInt())
+        assertEquals(0, screenBuffer.getCell(21).ec.toInt())
+        assertEquals(1, screenBuffer.cursorAddress)
+
+        // Attention AID
+        inputProcessor.sendAid(AID_PA1)
+        assertEquals(AID_PA1, inputProcessor.lastAid)
+    }
+}

src/test/java/haus/nightmare/a3270/NvtAndExtendedFeaturesTest.kt

@@ -0,0 +1,179 @@
+package haus.nightmare.a3270
+
+import org.junit.Assert.*
+import org.junit.Before
+import org.junit.Test
+import haus.nightmare.lib3270j.TerminalModel
+import haus.nightmare.lib3270j.charset.CodePageRegistry
+import haus.nightmare.lib3270j.charset.EbcdicTranslator
+import haus.nightmare.lib3270j.ecl.ECLConstants
+import haus.nightmare.lib3270j.input.InputProcessor
+import haus.nightmare.lib3270j.nvt.NvtProcessor
+import haus.nightmare.lib3270j.printer.PrinterDefinitionTable
+import haus.nightmare.lib3270j.protocol.DS3270Constants.*
+import haus.nightmare.lib3270j.screen.ScreenBuffer
+
+class NvtAndExtendedFeaturesTest {
+
+    private lateinit var screenBuffer: ScreenBuffer
+    private lateinit var translator: EbcdicTranslator
+    private lateinit var inputProcessor: InputProcessor
+
+    @Before
+    fun setUp() {
+        val model = TerminalModel.IBM_3279_2
+        translator = EbcdicTranslator()
+        screenBuffer = ScreenBuffer(model, translator)
+        inputProcessor = InputProcessor(screenBuffer, translator, null)
+    }
+
+    @Test
+    fun testExtendedCodePagesAvailability() {
+        val testCps = listOf(
+            "420", "424", "803", "838", "1160",
+            "1025", "1123", "1154", "880", "905", "1026", "1155",
+            "1140", "1141", "1142", "1143", "1144", "1145", "1146", "1147", "1148", "1149",
+            "930", "939", "935", "937", "1388", "1371", "933"
+        )
+
+        for (cp in testCps) {
+            val trans = CodePageRegistry.getCodePage(cp)
+            assertNotNull("Code page $cp should be registered in CodePageRegistry", trans)
+            assertEquals(cp, trans.codePageId)
+        }
+    }
+
+    @Test
+    fun testExtendedCodePageTranslation() {
+        // Test Greek Cp875
+        val greekTrans = CodePageRegistry.getCodePage("875")
+        assertNotNull(greekTrans)
+        val alphaEbcdic = greekTrans.unicodeToEbcdic('α')
+        val alphaUnicode = greekTrans.ebcdicToUnicode(alphaEbcdic.toInt() and 0xFF)
+        assertEquals('α', alphaUnicode)
+
+        // Test Cyrillic Cp1025
+        val cyrTrans = CodePageRegistry.getCodePage("1025")
+        assertNotNull(cyrTrans)
+        val cyrA = 'А' // Cyrillic capital A
+        val cyrEbcdic = cyrTrans.unicodeToEbcdic(cyrA)
+        val cyrResult = cyrTrans.ebcdicToUnicode(cyrEbcdic.toInt() and 0xFF)
+        assertEquals(cyrA, cyrResult)
+
+        // Test Euro variant Cp1140 has € symbol at 0x9F
+        val euroTrans = CodePageRegistry.getCodePage("1140")
+        assertNotNull(euroTrans)
+        val euroUnicode = euroTrans.ebcdicToUnicode(0x9F)
+        assertEquals('€', euroUnicode)
+    }
+
+    @Test
+    fun testPDTTables() {
+        val pcl5 = PrinterDefinitionTable.createPcl5PDT()
+        assertNotNull(pcl5)
+        assertEquals("PCL_5", pcl5.name)
+        assertNotNull(pcl5.getControlCode(PrinterDefinitionTable.CMD_START_JOB))
+
+        val escp = PrinterDefinitionTable.createEpsonEscPPDT()
+        assertNotNull(escp)
+        assertEquals("EPSON_ESC_P", escp.name)
+        assertNotNull(escp.getControlCode(PrinterDefinitionTable.CMD_START_BOLD))
+
+        val ps = PrinterDefinitionTable.createPostScriptPDT()
+        assertNotNull(ps)
+        assertEquals("POSTSCRIPT", ps.name)
+        val psStart = String(ps.getControlCode(PrinterDefinitionTable.CMD_START_JOB) ?: ByteArray(0), java.nio.charset.StandardCharsets.ISO_8859_1)
+        assertTrue(psStart.contains("%!PS"))
+
+        val plain = PrinterDefinitionTable.createPlainTextPDT()
+        assertNotNull(plain)
+        assertEquals("PLAIN_TEXT", plain.name)
+    }
+
+    @Test
+    fun testWordNavigationAndEditing() {
+        val text = "IBM  MAINFRAME  SYSTEM"
+        for (i in text.indices) {
+            screenBuffer.getCell(i).ucs4 = text[i]
+            screenBuffer.getCell(i).ec = translator.unicodeToEbcdic(text[i]).toByte()
+        }
+
+        screenBuffer.cursorAddress = 0
+        inputProcessor.processWordRight()
+        assertEquals(5, screenBuffer.cursorAddress)
+
+        inputProcessor.processWordRight()
+        assertEquals(16, screenBuffer.cursorAddress)
+
+        inputProcessor.processWordLeft()
+        assertEquals(5, screenBuffer.cursorAddress)
+
+        inputProcessor.processWordLeft()
+        assertEquals(0, screenBuffer.cursorAddress)
+    }
+
+    @Test
+    fun testFieldEndAndToggleInsert() {
+        screenBuffer.setCellFA(0, FA_PRINTABLE.toByte())
+        screenBuffer.setCellFA(20, (FA_PRINTABLE or FA_PROTECT).toByte())
+
+        val text = "HELLO"
+        for (i in text.indices) {
+            screenBuffer.getCell(1 + i).ucs4 = text[i]
+            screenBuffer.getCell(1 + i).ec = translator.unicodeToEbcdic(text[i]).toByte()
+        }
+
+        screenBuffer.cursorAddress = 1
+        inputProcessor.processFieldEnd()
+        assertEquals(6, screenBuffer.cursorAddress)
+
+        assertFalse(inputProcessor.isInsertMode)
+        inputProcessor.processToggleInsert()
+        assertTrue(inputProcessor.isInsertMode)
+        inputProcessor.processToggleInsert()
+        assertFalse(inputProcessor.isInsertMode)
+    }
+
+    @Test
+    fun testNvtFunctionKeySequences() {
+        val nvt = NvtProcessor(screenBuffer, null)
+
+        val f1 = nvt.getFunctionKeySequence(1)
+        val f5 = nvt.getFunctionKeySequence(5)
+        val f10 = nvt.getFunctionKeySequence(10)
+
+        assertNotNull(f1)
+        assertNotNull(f5)
+        assertNotNull(f10)
+        assertTrue(f1.startsWith("\u001B"))
+        assertTrue(f5.startsWith("\u001B"))
+        assertTrue(f10.startsWith("\u001B"))
+    }
+
+    @Test
+    fun testECLFieldWrapping() {
+        val totalCells = screenBuffer.rows * screenBuffer.cols
+        val faPos = totalCells - 10
+        screenBuffer.setCellFA(faPos, FA_PRINTABLE.toByte())
+        screenBuffer.setCellFA(15, (FA_PRINTABLE or FA_PROTECT).toByte())
+
+        val fieldList = screenBuffer.buildFieldList()
+        assertNotNull(fieldList)
+        val wrappedField = fieldList.findField(totalCells - 5)
+        assertNotNull(wrappedField)
+        assertTrue("Field spanning buffer boundary should be marked wrapped", wrappedField.isWrapped)
+        assertTrue(wrappedField.contains(totalCells - 2))
+        assertTrue(wrappedField.contains(5))
+    }
+
+    @Test
+    fun testOiaInhibitConstants() {
+        assertEquals(1, ECLConstants.INHIBIT_SYSTEM_LOCK)
+        assertEquals(0, ECLConstants.INHIBIT_NOT_INHIBITED)
+        assertEquals(5, ECLConstants.INHIBIT_COMM_CHECK)
+        assertEquals(3, ECLConstants.INHIBIT_PROTECTED_FIELD)
+        assertEquals(2, ECLConstants.INHIBIT_NUMERIC_ONLY)
+        assertEquals(4, ECLConstants.INHIBIT_OVERFLOW)
+        assertEquals(6, ECLConstants.INHIBIT_OPERATOR_DUE)
+    }
+}

src/test/java/haus/nightmare/a3270/ScriptAndPrinterTest.kt

@@ -0,0 +1,67 @@
+package haus.nightmare.a3270
+
+import haus.nightmare.lib3270j.TerminalModel
+import haus.nightmare.lib3270j.charset.EbcdicTranslator
+import haus.nightmare.lib3270j.input.InputProcessor
+import haus.nightmare.lib3270j.printer.PrinterConfig
+import haus.nightmare.lib3270j.printer.PrinterConstants
+import haus.nightmare.lib3270j.protocol.DS3270Constants.*
+import haus.nightmare.lib3270j.screen.ScreenBuffer
+import org.junit.Assert.*
+import org.junit.Before
+import org.junit.Test
+
+class ScriptAndPrinterTest {
+
+    private lateinit var screenBuffer: ScreenBuffer
+    private lateinit var translator: EbcdicTranslator
+    private lateinit var inputProcessor: InputProcessor
+
+    @Before
+    fun setUp() {
+        val model = TerminalModel.IBM_3279_2
+        translator = EbcdicTranslator()
+        screenBuffer = ScreenBuffer(model, translator)
+        inputProcessor = InputProcessor(screenBuffer, translator, null)
+    }
+
+    @Test
+    fun testEmulateInputMnemonicTokens() {
+        // Position 0: Unprotected input field
+        screenBuffer.setCellFA(0, FA_PRINTABLE.toByte())
+        screenBuffer.cursorAddress = 1
+
+        inputProcessor.sendKeys("HELLO[enter]")
+        assertEquals('H', screenBuffer.getCell(1).ucs4)
+        assertEquals('E', screenBuffer.getCell(2).ucs4)
+        assertEquals('L', screenBuffer.getCell(3).ucs4)
+        assertEquals('L', screenBuffer.getCell(4).ucs4)
+        assertEquals('O', screenBuffer.getCell(5).ucs4)
+        assertEquals(AID_ENTER, inputProcessor.lastAid)
+
+        inputProcessor.reset()
+        inputProcessor.sendKeys("[pf3]")
+        assertEquals(AID_PF3, inputProcessor.lastAid)
+    }
+
+    @Test
+    fun testPrinterConfigParameters() {
+        val config = PrinterConfig("10.0.0.1", 992, "PRT01", true).apply {
+            associatedDisplayLuName = "DSP01"
+            codePage = "1047"
+            mpp = 132
+            mpl = 66
+            destinationType = PrinterConfig.DestinationType.MEMORY
+        }
+
+        assertEquals("10.0.0.1", config.host)
+        assertEquals(992, config.port)
+        assertEquals("PRT01", config.printerLuName)
+        assertEquals("DSP01", config.associatedDisplayLuName)
+        assertTrue(config.isUseTls)
+        assertEquals("1047", config.codePage)
+        assertEquals(132, config.mpp)
+        assertEquals(66, config.mpl)
+        assertEquals(PrinterConfig.DestinationType.MEMORY, config.destinationType)
+    }
+}