Build Gitea release against Java 11 (lowest supported Java)

Rearrange settings, update sample config
Add icon
2026-09-15 23:52:21 +00:00 · 2026-09-15 17:59:26 +00:00 · 2026-09-14 13:01:41 +00:00 · 2026-09-12 17:21:21 -04:00 · 2026-09-12 15:33:12 +00:00 · 2026-09-12 14:58:48 +00:00
495 changed files with 75439 additions and 10104 deletions
@@ -9,8 +9,12 @@ on:

 jobs:
  build:
-    name: Build JAR & Run Tests
+    name: Build JAR & Run Tests (Java ${{ matrix.java }})
    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        java: [ '11', '17', '21' ]

    steps:
      - name: Configure Dynamic DNS Resolvers
@@ -23,21 +27,21 @@ jobs:
        with:
          fetch-depth: 0

-      - name: Set up Java JDK (Temurin 17)
+      - name: Set up Java JDK (Temurin ${{ matrix.java }})
        uses: actions/setup-java@v3
        continue-on-error: true
        with:
-          java-version: '17'
+          java-version: ${{ matrix.java }}
          distribution: 'temurin'

      - name: Ensure Java Available
        run: |
          if ! command -v javac >/dev/null 2>&1; then
-            echo "Installing OpenJDK 17 via package manager..."
+            echo "Installing OpenJDK ${{ matrix.java }} via package manager..."
            if command -v apt-get >/dev/null 2>&1; then
-              apt-get update && apt-get install -y openjdk-17-jdk-headless || true
+              apt-get update && apt-get install -y openjdk-${{ matrix.java }}-jdk-headless || true
            elif command -v apk >/dev/null 2>&1; then
-              apk add --no-cache openjdk17 || true
+              apk add --no-cache openjdk${{ matrix.java }} || true
            fi
          fi
          echo "Java compiler:"
@@ -53,23 +57,27 @@ jobs:
        run: |
          sh ./test_all.sh

+      - name: Prepare Versioned JAR
+        run: |
+          cp build/j3270.jar "build/j3270-java${{ matrix.java }}.jar"
+
      - name: Upload j3270 Executable JAR Artifact
        uses: actions/upload-artifact@v3
        continue-on-error: true
        with:
-          name: j3270-executable-jar
-          path: build/j3270.jar
+          name: j3270-java${{ matrix.java }}-jar
+          path: build/j3270-java${{ matrix.java }}.jar

      - name: Upload Test Reports
        if: always()
        uses: actions/upload-artifact@v3
        continue-on-error: true
        with:
-          name: test-reports
+          name: test-reports-java${{ matrix.java }}
          path: build/reports/tests/

      - name: Report Build Status
        if: failure()
        run: |
-          echo "### ❌ Build or Test Failed" >> $GITHUB_STEP_SUMMARY
+          echo "### ❌ Build or Test Failed for Java ${{ matrix.java }}" >> $GITHUB_STEP_SUMMARY
          echo "Please check the runner logs above for details." >> $GITHUB_STEP_SUMMARY
@@ -20,21 +20,21 @@ jobs:
        with:
          fetch-depth: 0

-      - name: Set up Java JDK (Temurin 17)
+      - name: Set up Java JDK (Temurin 11)
        uses: actions/setup-java@v3
        continue-on-error: true
        with:
-          java-version: '17'
+          java-version: '11'
          distribution: 'temurin'

      - name: Ensure Java Available
        run: |
          if ! command -v javac >/dev/null 2>&1; then
-            echo "Installing OpenJDK 17 via package manager..."
+            echo "Installing OpenJDK 11 via package manager..."
            if command -v apt-get >/dev/null 2>&1; then
-              apt-get update && apt-get install -y openjdk-17-jdk-headless || true
+              apt-get update && apt-get install -y openjdk-11-jdk-headless || true
            elif command -v apk >/dev/null 2>&1; then
-              apk add --no-cache openjdk17 || true
+              apk add --no-cache openjdk11 || true
            fi
          fi
          echo "Java compiler:"
@@ -9,8 +9,12 @@ on:

 jobs:
  build:
-    name: Build JAR & Run Tests
+    name: Build JAR & Run Tests (Java ${{ matrix.java }})
    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        java: [ '11', '17', '21' ]

    steps:
      - name: Configure Dynamic DNS Resolvers
@@ -23,21 +27,21 @@ jobs:
        with:
          fetch-depth: 0

-      - name: Set up Java JDK (Temurin 17)
+      - name: Set up Java JDK (Temurin ${{ matrix.java }})
        uses: actions/setup-java@v3
        continue-on-error: true
        with:
-          java-version: '17'
+          java-version: ${{ matrix.java }}
          distribution: 'temurin'

      - name: Ensure Java Available
        run: |
          if ! command -v javac >/dev/null 2>&1; then
-            echo "Installing OpenJDK 17 via package manager..."
+            echo "Installing OpenJDK ${{ matrix.java }} via package manager..."
            if command -v apt-get >/dev/null 2>&1; then
-              apt-get update && apt-get install -y openjdk-17-jdk-headless || true
+              apt-get update && apt-get install -y openjdk-${{ matrix.java }}-jdk-headless || true
            elif command -v apk >/dev/null 2>&1; then
-              apk add --no-cache openjdk17 || true
+              apk add --no-cache openjdk${{ matrix.java }} || true
            fi
          fi
          echo "Java compiler:"
@@ -53,23 +57,27 @@ jobs:
        run: |
          sh ./test_all.sh

+      - name: Prepare Versioned JAR
+        run: |
+          cp build/j3270.jar "build/j3270-java${{ matrix.java }}.jar"
+
      - name: Upload j3270 Executable JAR Artifact
        uses: actions/upload-artifact@v3
        continue-on-error: true
        with:
-          name: j3270-executable-jar
-          path: build/j3270.jar
+          name: j3270-java${{ matrix.java }}-jar
+          path: build/j3270-java${{ matrix.java }}.jar

      - name: Upload Test Reports
        if: always()
        uses: actions/upload-artifact@v3
        continue-on-error: true
        with:
-          name: test-reports
+          name: test-reports-java${{ matrix.java }}
          path: build/reports/tests/

      - name: Report Build Status
        if: failure()
        run: |
-          echo "### ❌ Build or Test Failed" >> $GITHUB_STEP_SUMMARY
+          echo "### ❌ Build or Test Failed for Java ${{ matrix.java }}" >> $GITHUB_STEP_SUMMARY
          echo "Please check the runner logs above for details." >> $GITHUB_STEP_SUMMARY
@@ -1,6 +1,12 @@
 j3270.log.*
+*.bin
+*.txt
+*.py
+*.pcap
+build/*
 *.log
 .DS_Store
 *.jar
 build
 .gradle
+*.txt
@@ -2,29 +2,43 @@

 [![Build & Test](https://git.hugfreevikings.wtf/rudi/j3270/actions/workflows/build.yaml/badge.svg)](https://git.hugfreevikings.wtf/rudi/j3270/actions)
 [![Releases](https://img.shields.io/badge/Releases-Gitea-blue.svg)](https://git.hugfreevikings.wtf/rudi/j3270/releases)
-[![Java](https://img.shields.io/badge/Java-11%20%7C%2017%20%7C%2021-blue.svg)](https://adoptium.net)
-[![License](https://img.shields.io/badge/License-MIT%20%2F%20BSD-green.svg)](LICENSE)
+[![Java](https://img.shields.io/badge/Java-11%20%7C%2017%20%7C%2021%20(LTS)-blue.svg)](https://adoptium.net)
+[![Tests](https://img.shields.io/badge/Tests-539%20passed-brightgreen.svg)]()
+[![License](https://img.shields.io/badge/License-Unlicense-blue.svg)](LICENSE)

-An **x3270-aligned IBM 3270 mainframe terminal emulator** written in pure Java. Designed for high compatibility with IBM z/OS, z/VM, CMS, and TSO systems over TN3270 and TN3270E.
+An **x3270-aligned and IBM Host On-Demand (HoD) compatible IBM 3270 mainframe terminal emulator & protocol library** written in pure Java with zero third-party runtime dependencies. Designed for high fidelity and compatibility with IBM z/OS, z/VM, and 3270-based systems over TN3270 and TN3270E.

 ---

 ## 🚀 Quick Download & Run

-### Latest Standalone JAR
-You can download the ready-to-run executable JAR directly from the releases or CI builds:
+### Latest Standalone JARs
+Ready-to-run executable JARs are built and tested across all three Java LTS baselines (**Java 11, Java 17, and Java 21**) by Gitea Actions:

 - **[Download Latest Tagged Release (`j3270.jar`)](https://git.hugfreevikings.wtf/rudi/j3270/releases)**
- **[Latest Nightly CI Artifacts](https://git.hugfreevikings.wtf/rudi/j3270/actions)** (Download under the latest successful workflow run)
+- **[Latest Nightly CI Artifacts](https://git.hugfreevikings.wtf/rudi/j3270/actions)**: Download standalone JARs tailored for each LTS runtime under the latest workflow run:
+  - `j3270-java11-jar` (Java 11 LTS)
+  - `j3270-java17-jar` (Java 17 LTS — primary Gitea runner baseline)
+  - `j3270-java21-jar` (Java 21 LTS)
+
+### Java Runtime Requirements
+Requires **Java 11 or higher** (LTS versions: **Java 11, 17, 21**; also compatible with Java 24).
+
+The project is tested and verified against:
+- **Eclipse Temurin** (Adoptium OpenJDK HotSpot) — used in Gitea Actions CI workflows.
+- **IBM Semeru Runtimes** (OpenJ9) — e.g. `11.0.32-sem`, `21.0.6-sem`, and `24.0.2-sem` via SDKMAN.

 ### Running `j3270`
-Requires **Java 11 or higher** (Java 11, 17, 21+):

 ```bash
-# Launch interactive GUI
+# Launch interactive Swing GUI
 java -jar j3270.jar

-# Connect to TLS/SSL mainframe with custom port
+# Connect to mainframe with host, port, and terminal model (Models 2-5 or 'dynamic')
+java -jar j3270.jar mainframe.example.com 23 4
+java -jar j3270.jar mainframe.example.com 23 dynamic
+
+# Connect to TLS/SSL mainframe on custom or standard (992) port
 java -jar j3270.jar -s mainframe.example.com 992
 # Or using standard x3270 L: prefix
 java -jar j3270.jar L:mainframe.example.com:992
@@ -35,12 +49,19 @@ java -jar j3270.jar -P mainframe.example.com 23
 java -jar j3270.jar P:mainframe.example.com:23

 # Connect with unverified/self-signed certificate verification bypass
-java -jar j3270.jar --tls --insecure mainframe.example.com 992
+java -jar j3270.jar -s --insecure mainframe.example.com 992

-# Launch with custom configuration file
+# Enable GDDM/GOCA host graphics explicitly (or disable via --no-graphics)
+java -jar j3270.jar -g GOCA mainframe.example.com
+java -jar j3270.jar --no-graphics mainframe.example.com
+
+# Launch with custom INI configuration profile
 java -jar j3270.jar -c config.ini

-# Launch directly from source runner
+# Enable protocol and diagnostic debug logging to j3270.log
+java -jar j3270.jar -d mainframe.example.com
+
+# Launch directly from source runner script
 ./run.sh
 ```

@@ -48,39 +69,108 @@ java -jar j3270.jar -c config.ini

 ## ✨ Features

- **TN3270 & TN3270E Protocol Support**: RFC 2355 compliant state machine, negotiation, Device-Type query, plain TN3270 fallback, and SSL/TLS encryption.
- **SSL/TLS Security**:
-  - Encrypted TN3270 over TLS connections on standard port `992` or custom ports.
-  - Interactive certificate verification prompt for self-signed or untrusted certificates with fingerprint, subject, issuer, and validity inspection.
-  - Optional unverified/insecure mode for testing and headless scripting.
- **IND$FILE File Transfer**: Full support for both **CUT** and **DFT (DDM)** high-speed structured field transfers with ASCII/binary translation, CRLF handling, and recfm/lrecl formatting for TSO, VM/CMS, and CICS.
- **z/VM & Line-Mode Support**: Proper SSCP-LU and unformatted line handling (`CP TERM CONMODE 3270` supported).
- **APL & Graphic Escape**: Comprehensive box-drawing and math symbol character rendering.
- **Terminal Models**:
+### 🌐 Protocol & Telnet Engine
+- **TN3270 & TN3270E (RFC 2355)**: Full compliant finite-state machine, Device-Type negotiation, Functions negotiation (`BIND-IMAGE`, `RESPONSES`, `SYSREQ`), plain TN3270 fallback, and NVT (Network Virtual Terminal) mode.
+- **SSCP-LU & Unformatted Line Mode**: Native z/VM line-mode support (`CP TERM CONMODE 3270`).
+- **Terminal Models & Dynamic Geometry**:
  - Model 2 (24x80)
  - Model 3 (32x80)
  - Model 4 (43x80)
  - Model 5 (27x132)
- **Zero-Dependency Core**: Modular architecture separated into:
-  - `lib3270j`: Reusable Java 3270 protocol, data stream parser, charset translation, and telnet state machine.
-  - `j3270`: Desktop Swing user interface and session management.
+  - `IBM-DYNAMIC` (Model 0 dynamic geometry auto-negotiation via Usable Area Query Reply).
+- **Enterprise Proxy Support**: SOCKS5 and HTTP CONNECT proxy tunneling with optional authentication.
+
+### 🔒 Security & Encryption
+- **Modern TLS 1.2 / 1.3**: Encrypted TN3270 over TLS on standard port `992` or custom ports via JSSE.
+- **Interactive Certificate Verification**: Security dialog for untrusted or self-signed certificates displaying SHA-256 fingerprints, subject, issuer, and validity dates with user approval prompt.
+- **Headless Insecure Mode**: `--insecure` / `-k` option for scripted environments and test mainframes.
+
+### 🎨 GDDM / GOCA Host Vector Graphics (IBM 3179G)
+- **Vector Drawing Orders**: Polylines, relative lines, circular & elliptical arcs, fillets, and multi-polygon area fills with boundary detection and alternate/winding rules.
+- **1:1 Color Calibration**: 16-color GOCA palette and base 4-color mapping calibrated 1:1 against IBM Host On-Demand (HoD).
+- **Shading, Patterns & Overlays**: Patterned area fills, geometric markers, and uncompressed / run-length bit-image and wallpaper overlays.
+- **Vector Symbol Fonts (VSS)**: Stroked vector typography with baseline rotation angle (`GSCA`), shear (`GSCR`), and micro-scale anti-aliased sub-pixel rendering.
+- **Programmed Symbols (PSS / PSA)**: Support for single-plane and triple-plane multi-color composite symbols.
+- **Interactive Graphics Input**: Mouse click pick correlation mapping display coordinates to host graphics space, 56-byte Graphic Input structured field generation, and immediate/deferred light pen selection.
+
+### 🖨️ IBM 3287/3286 Host Printing Emulation
+- **Autonomous Printer Sessions**: TN3270E host print sessions supporting SCS (SNA Character String / LU-Type 1) and DSC/DSE (Data Stream Compatibility / LU-Type 3).
+- **Double-Byte DBCS Printing**: Pitch adjustments, character spacing, and grid line formatting (`PrintSCS3270DB`, `PrintPS3270DB`).
+- **Flexible Print Output**: Printer Definition Table (PDT) integration, print spooling to local files, or dispatch directly to system print queues.
+
+### 📁 IND$FILE File Transfer & Host Catalog
+- **Full Protocol Coverage**: Support for both **CUT** and high-speed **DFT (DDM)** structured field transfers for TSO, VM/CMS, and CICS.
+- **Translation Modes**: Automatic ASCII/EBCDIC text translation, CRLF conversions, and transparent binary transfers.
+- **Dataset Formatting**: Full control over Record Format (`RECFM` F/V/U), Logical Record Length (`LRECL`), Block Size (`BLKSIZE`), and Space allocation.
+- **Host Catalog Browser**: Interactive directory dialog to query, parse, and browse CMS and TSO host dataset catalogs.
+
+### 🌍 Internationalization & Character Sets
+- **22+ Single-Byte EBCDIC Codepages**: US/Canada (037), Open Systems / z/OS Unix (1047), International (500, 1148 Euro), UK (285), Germany/Austria (273, 1141 Euro), France (297), Italy (280), Spain (284), Scandinavia (277, 278), Greece (875), Turkey (1026, 1155, 905), Eastern Europe (870), Iceland (871), Cyrillic (1025, 1123, 1154, 880), Hebrew (424, 803), Arabic (420), Thai (838, 1160).
+- **Mixed DBCS Support**: Japanese Katakana (930), Japanese Latin (939), Simplified Chinese (935, 1388), Traditional Chinese (937, 1371), and Korean (933) with Shift-In (`0x0E`) / Shift-Out (`0x0F`) state handling.
+- **APL & Special Graphics**: APL keyboard mode, box-drawing characters, and Graphic Escape (`GE`) symbol translations.
+
+### 🏛️ IBM Host On-Demand ECL API Alignment
+- Reusable public API compliant with IBM Host On-Demand (HoD) v14 specifications under `com.ibm.eNetwork.ECL.*` and `haus.nightmare.lib3270j.ecl.*`.
+- Drop-in implementations for `ECLSession`, `ECLPS` (Presentation Space), `ECLOIA` (Operator Information Area), `ECLConnection`, `ECLField`, `ECLFieldList`, `ECLScreenDesc`, `ECLScreenReco`, and `ECLXfer`.
+
+### 🖥️ Desktop User Interface (j3270)
+- **Themes**: Modern Dark and Light UI themes with instant switching.
+- **Dynamic Font Scaling**: Real-time font size adjustments (`Cmd/Ctrl +`, `Cmd/Ctrl -`, `Cmd/Ctrl 0`) with smooth scaling and guarded window repacking.
+- **Screen Search**: Full-screen text search dialog (`Cmd/Ctrl + F`) with forward/backward navigation and case-sensitivity controls.
+- **Screen Exporter**: Save screen images and content as plain text, HTML, or PNG.
+- **Field Inspector**: Interactive inspection tool displaying 3270 field boundaries, buffer addresses, protection, highlighting, and color attributes.
+- **Scripting & Keystroke Macros**: Interactive mnemonic keystroke playback dialog supporting standard x3270 action strings.
+- **Word Processing Modes**: Document Mode (DOC), Word Wrap, audible margin bell, and tab stop navigation.
+- **Visual Aids**: Crosshair ruler and configurable cursor styles (block cursor, underline cursor with alpha blending).
+- **Persistent Profiles**: Configuration profiles and session preferences saved in INI files (`j3270.ini`).
+
+### 📦 Modular Zero-Dependency Core
+- **`lib3270j`**: Standalone Java protocol and terminal engine with **zero third-party dependencies** (`java.base`, `java.desktop` only).
+- **`j3270`**: Standalone desktop Swing terminal application.

 ---

 ## 🛠️ Building from Source

-### Standalone Build (No Gradle Required)
-The project includes self-contained, portable build scripts:
+### Quick Setup & Build for End Users

+Self-contained setup scripts automatically locate an installed Java 11+ JDK (searching `JAVA_HOME`, system `PATH`, macOS `java_home`, Homebrew, Linux JVM paths, Windows Registry, standard installation directories, and package managers), compile `lib3270j` and `j3270`, and package the standalone executable JAR (`build/j3270.jar`):
+
+**Linux / macOS (POSIX Shell):**
 ```bash
-# Build executable JAR in 2 seconds:
-sh ./build_all.sh
+# Setup and build standalone executable JAR:
+./setup.sh

-# Run all 56 automated unit tests in ~500ms:
-sh ./test_all.sh
+# Build and immediately launch:
+./setup.sh --run
+
+# Clean build and connect to host:
+./setup.sh --clean --run -- mainframe.example.com 23 4
 ```

-The resulting standalone JAR is created at `build/j3270.jar`.
+**Windows (PowerShell):**
+```powershell
+# Setup and build standalone executable JAR:
+.\setup.ps1
+
+# Build and immediately launch:
+.\setup.ps1 -Run
+
+# Clean build and connect to host:
+.\setup.ps1 -Clean -Run -- mainframe.example.com 23 4
+```
+*(Also available as `.\setup.ps`)*
+
+### Standalone Build (Advanced / CI)
+The project also provides low-level scripts and optional Gradle support:
+
+```bash
+# Direct compile and package without diagnostics:
+sh ./build_all.sh
+
+# Run all 539+ automated unit tests (~7s):
+sh ./test_all.sh
+```

 ### Gradle Build (Optional)
 ```bash
@@ -88,11 +178,8 @@ The resulting standalone JAR is created at `build/j3270.jar`.
 ./gradlew test
 ```

---
-
-## 🤝 Contributing
-
-Contributions and issue reports are welcome! Please feel free to open a bug report or feature request via the Gitea issue tracker.
+### Continuous Integration
+All pushes and pull requests are verified across **Java 11, 17, and 21 LTS** runners via Gitea Actions (`.gitea/workflows/build.yaml`).

 ---

@@ -0,0 +1,146 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   viewBox="124 738 320 320"
+   width="320"
+   height="320"
+   xml:space="preserve"
+   id="svg_j3270_icon"
+   version="1.1">
+  <metadata id="metadata8">
+    <rdf:RDF>
+      <cc:Work rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <!-- Pure black background (#000000) for classic 3270 CRT terminal look -->
+  <rect x="124" y="738" width="320" height="320" fill="#000000" />
+  <g transform="matrix(1.3333333,0,0,-1.3333333,0,1122.6667)" id="g10">
+    <g transform="scale(0.1)" id="g12">
+      <g id="g14">
+        <!-- Green Terminal Screen Frame -->
+        <path
+           id="path28"
+           style="fill:none;stroke:#00ff00;stroke-width:3.75079012;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="M 1177.27,2220.71 V 1142.45 H 3084.31 V 2220.71 H 1177.27" />
+        <!-- Blue Wave / Exponential Curve -->
+        <path
+           id="path30"
+           style="fill:none;stroke:#0000ff;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1172.41,1137.58 79.1,-1.22 -0.21,-0.38 c 1.08,0 2.18,0 3.27,0 762.95,0 1464.86,417.88 1829.53,1089.21" />
+        <!-- Red Circular Arc -->
+        <path
+           id="path32"
+           style="fill:none;stroke:#ff0000;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2593.86,1620.73 -1.22,-28 -0.08,-0.08 c 0.43,-250.15 202.81,-452.72 452.3,-452.72 0.14,0 0.28,0 0.42,0 l 43.9,2.52" />
+        <!-- Yellow Smiley Head -->
+        <path
+           id="path34"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2976,1363.94 v 0.08 c 44.73,34.29 71.21,87.25 71.8,143.61 l 0.01,-0.15 c -0.06,97.48 -79.11,176.47 -176.59,176.47 -0.36,0 -0.73,0 -1.09,0 l -0.07,0.03 c -0.25,0 -0.51,0 -0.75,0 -37.38,0 -73.79,-11.94 -103.92,-34.08 l 0.02,-0.03 c -44.38,-34.04 -70.82,-86.47 -71.8,-142.39 l 0.06,0.04 c 0.54,-97.43 79.04,-176.47 176.46,-177.69 l 0.08,0.02 c 0.64,-0.01 1.29,-0.01 1.92,-0.01 37.4,0 73.82,11.94 103.96,34.08" />
+        <!-- 'l' -->
+        <path
+           id="path36"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1502.21,1785.02 h 23.13 v 32.86 h -23.13 l -4.87,8.52 v 154.56 h -18.25 V 1826.4 l 4.87,-25.56 4.87,-7.3 13.38,-8.52" />
+        <path
+           id="path38"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1502.21,1785.02 h 23.13 v 32.86 h -23.13 l -4.87,8.52 v 154.56 h -18.25 V 1826.4 l 4.87,-25.56 4.87,-7.3 13.38,-8.52" />
+        <!-- 'i' -->
+        <path
+           id="path40"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1566.71,1785.02 h 13.39 v 32.86 h -13.39 l -4.86,8.52 v 105.88 h -18.26 V 1826.4 l 4.87,-25.56 4.87,-7.3 13.38,-8.52 m -4.86,163.08 v 32.86 h -18.26 v -32.86 h 18.26" />
+        <path
+           id="path42"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1566.71,1785.02 h 13.39 v 32.86 h -13.39 l -4.86,8.52 v 105.88 h -18.26 V 1826.4 l 4.87,-25.56 4.87,-7.3 13.38,-8.52 m -4.86,163.08 v 32.86 h -18.26 v -32.86 h 18.26" />
+        <!-- 'b' -->
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+        <path
+           id="path70"
+           style="fill:none;stroke:#00ffff;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2820.22,1595.17 0.01,0.01 c -14.62,-1.91 -25.56,-14.37 -25.56,-29.11 0,-0.03 0,-0.07 0,-0.1 l -0.02,-0.01 c 0,-0.03 0,-0.07 0,-0.1 0,-16.09 13.04,-29.14 29.13,-29.14 0.43,0 0.87,0.01 1.29,0.03 h 3.67 0.01 c 14.61,1.91 25.55,14.37 25.55,29.11 0,0.03 0,0.07 0,0.1 l 0.02,0.01 c 0,0.04 0,0.08 0,0.12 0,16.07 -13.03,29.09 -29.09,29.09 -0.03,0 -0.08,0 -0.12,0 l -4.89,-0.01" />
+        <!-- Right Eye (cyan) -->
+        <path
+           id="path72"
+           style="fill:none;stroke:#00ffff;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2921.23,1569.61 v -3.65 l -0.01,-0.01 c 0,-0.27 -0.01,-0.54 -0.01,-0.81 0,-18.22 14.66,-33.05 32.87,-33.26 l 0.03,0.01 c 0.28,0 0.57,-0.01 0.84,-0.01 17.29,0 31.72,13.22 33.24,30.44 l -0.02,3.64 0.02,0.02 c 0,0.27 0.01,0.54 0.01,0.81 0,18.37 -14.9,33.28 -33.28,33.28 -0.26,0 -0.54,-0.01 -0.81,-0.02 l -0.02,-0.03 c -17.14,-0.18 -31.36,-13.34 -32.86,-30.42" />
+        <!-- Nose -->
+        <path
+           id="path74"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2892.03,1528.23 -29.21,-20.68" />
+        <path
+           id="path76"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2862.82,1507.55 h 32.86" />
+      </g>
+    </g>
+  </g>
+</svg>
@@ -1,10 +0,0 @@
-# Fixed Bugs
- Complete failure when using `cp term conmode 3270` under VM:
-  Fixed in InputProcessor by sending raw line-mode EBCDIC character data in SSCP-LU mode instead of 3270 AID headers and 1920-byte buffer dumps, and correctly processing subsequent 3270 stream transitions upon CONMODE 3270.
-
- Unable to start a 2nd transfer after first completed ("A transfer is already in progress"):
-  Fixed in FTDft by signaling completion upon handling `TR_CLOSE_REQ` / host completion messages, and adding state reset in FileTransfer.
-
- IND$FILE CMS and TSO:
-  Fixed command formatting options handling (empty parenthesis removal for CMS binary/default modes and option spacing) and added Query Reply filtering for DFT/DDM mode.
-
@@ -1,5 +1,5 @@
 allprojects {
-    group = 'org.j3270'
+    group = 'haus.nightmare.j3270'
    version = '0.1.0'

    repositories {
@@ -10,11 +10,14 @@ allprojects {
 subprojects {
    apply plugin: 'java'

-    sourceCompatibility = JavaVersion.VERSION_11
-    targetCompatibility = JavaVersion.VERSION_11
+    java {
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
+    }

    test {
        useJUnitPlatform()
+        jvmArgs '-Djava.awt.headless=true'
        testLogging {
            events "passed", "skipped", "failed"
        }
@@ -22,5 +25,6 @@ subprojects {

    dependencies {
        testImplementation 'org.junit.jupiter:junit-jupiter:5.10.2'
+        testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
    }
 }
@@ -1,6 +0,0 @@
-Manifest-Version: 1.0
-Main-Class: org.pubvm.j3270.J3270App
-Implementation-Title: j3270
-Implementation-Version: 0.1.0
-Created-By: j3270 build_all.sh
-
@@ -14,16 +14,32 @@ if [ -n "$JAVA_HOME" ] && [ -x "$JAVA_HOME/bin/javac" ] && [ -x "$JAVA_HOME/bin/
    JAVAC_BIN="$JAVA_HOME/bin/javac"
    JAR_BIN="$JAVA_HOME/bin/jar"
 elif command -v javac >/dev/null 2>&1 && command -v jar >/dev/null 2>&1; then
-    JAVAC_BIN="$(command -v javac)"
-    JAR_BIN="$(command -v jar)"
-else
-    # Check common SDKMAN / macOS / Linux JDK locations
-    for h in "$HOME/.sdkman/candidates/java/current" \
+    if javac -version >/dev/null 2>&1; then
+        JAVAC_BIN="$(command -v javac)"
+        JAR_BIN="$(command -v jar)"
+    fi
+fi
+
+if [ -z "$JAVAC_BIN" ] || [ -z "$JAR_BIN" ]; then
+    if [ -x /usr/libexec/java_home ]; then
+        MAC_JAVA_HOME="$(/usr/libexec/java_home 2>/dev/null || true)"
+        if [ -n "$MAC_JAVA_HOME" ] && [ -x "$MAC_JAVA_HOME/bin/javac" ] && [ -x "$MAC_JAVA_HOME/bin/jar" ]; then
+            export JAVA_HOME="$MAC_JAVA_HOME"
+            JAVAC_BIN="$JAVA_HOME/bin/javac"
+            JAR_BIN="$JAVA_HOME/bin/jar"
+        fi
+    fi
+fi
+
+if [ -z "$JAVAC_BIN" ] || [ -z "$JAR_BIN" ]; then
+    # Check standard system JDK installation locations
+    for h in /usr/lib/jvm/default-java \
             /usr/lib/jvm/java-21-openjdk* \
             /usr/lib/jvm/java-17-openjdk* \
             /usr/lib/jvm/java-11-openjdk* \
-             /usr/lib/jvm/default-java \
-             /Library/Java/JavaVirtualMachines/*/Contents/Home; do
+             /Library/Java/JavaVirtualMachines/*/Contents/Home \
+             /opt/homebrew/opt/openjdk/libexec/openjdk.jdk/Contents/Home \
+             /opt/homebrew/opt/openjdk; do
        if [ -d "$h" ] && [ -x "$h/bin/javac" ] && [ -x "$h/bin/jar" ]; then
            export JAVA_HOME="$h"
            JAVAC_BIN="$JAVA_HOME/bin/javac"
@@ -77,7 +93,7 @@ fi

 # 4. Package executable JAR
 echo "Packaging j3270.jar..."
-printf "Manifest-Version: 1.0\nMain-Class: org.pubvm.j3270.J3270App\nImplementation-Title: j3270\nImplementation-Version: 0.1.0\nCreated-By: j3270 build_all.sh\n\n" > "$BUILD_DIR/MANIFEST.MF"
+printf "Manifest-Version: 1.0\nMain-Class: haus.nightmare.j3270.J3270App\nImplementation-Title: j3270\nImplementation-Version: 0.1.0\nCreated-By: j3270 build_all.sh\n\n" > "$BUILD_DIR/MANIFEST.MF"

 "$JAR_BIN" cvfm "$BUILD_DIR/j3270.jar" "$BUILD_DIR/MANIFEST.MF" \
    -C "$BUILD_DIR/lib3270j" . \
@@ -87,3 +103,58 @@ echo "=== Build Complete ==="
 echo "Executable JAR created: $BUILD_DIR/j3270.jar"
 ls -lh "$BUILD_DIR/j3270.jar"

+# 5. Compile and run tests if requested
+if [ "$1" = "test" ] || [ "$1" = "check" ]; then
+    echo "=== Running Tests ==="
+    TEST_BUILD_DIR="$BUILD_DIR/test-classes"
+    mkdir -p "$TEST_BUILD_DIR"
+    JUNIT_CP=$(find "$HOME/.gradle/caches/modules-2/files-2.1/" -name "*.jar" 2>/dev/null | grep -E "junit|opentest|apiguardian" | tr "\n" ":" || true)
+    FULL_CP="$BUILD_DIR/lib3270j:$BUILD_DIR/j3270:$JUNIT_CP"
+    
+    find "$SCRIPT_DIR/lib3270j/src/test/java" -name "*.java" > "$BUILD_DIR/test_sources.txt" 2>/dev/null || true
+    if [ -d "$SCRIPT_DIR/j3270/src/test/java" ]; then
+        find "$SCRIPT_DIR/j3270/src/test/java" -name "*.java" >> "$BUILD_DIR/test_sources.txt" 2>/dev/null || true
+    fi
+    
+    if [ -s "$BUILD_DIR/test_sources.txt" ] && [ -n "$JUNIT_CP" ]; then
+        echo "Compiling tests..."
+        "$JAVAC_BIN" -cp "$FULL_CP" -d "$TEST_BUILD_DIR" @"$BUILD_DIR/test_sources.txt"
+        rm -f "$BUILD_DIR/test_sources.txt"
+        
+        echo "Executing tests with JUnit Platform..."
+        cat << 'EOF' > "$BUILD_DIR/TestRunner.java"
+import org.junit.platform.launcher.*;
+import org.junit.platform.launcher.core.*;
+import org.junit.platform.launcher.listeners.*;
+import org.junit.platform.engine.discovery.*;
+import static org.junit.platform.engine.discovery.DiscoverySelectors.*;
+import java.io.PrintWriter;
+
+public class TestRunner {
+    public static void main(String[] args) {
+        LauncherDiscoveryRequest request = LauncherDiscoveryRequestBuilder.request()
+            .selectors(
+                selectPackage("haus.nightmare")
+            )
+            .build();
+
+        Launcher launcher = LauncherFactory.create();
+        SummaryGeneratingListener listener = new SummaryGeneratingListener();
+        launcher.registerTestExecutionListeners(listener);
+        launcher.execute(request);
+
+        TestExecutionSummary summary = listener.getSummary();
+        summary.printTo(new PrintWriter(System.out));
+        summary.printFailuresTo(new PrintWriter(System.err));
+
+        System.exit(summary.getTotalFailureCount() > 0 ? 1 : 0);
+    }
+}
+EOF
+        "$JAVAC_BIN" -cp "$FULL_CP:$TEST_BUILD_DIR" -d "$BUILD_DIR" "$BUILD_DIR/TestRunner.java"
+        JAVA_BIN_EXEC="${JAVA_HOME:+$JAVA_HOME/bin/java}"
+        JAVA_BIN_EXEC="${JAVA_BIN_EXEC:-java}"
+        "$JAVA_BIN_EXEC" -cp "$FULL_CP:$TEST_BUILD_DIR:$BUILD_DIR" TestRunner
+    fi
+fi
+
@@ -1,10 +1,10 @@
 # Gitea Actions Runner Configuration for j3270

 This repository includes Gitea Actions workflows in `.gitea/workflows/build.yaml` to automatically:
-1. Compile and run the JUnit 5 test suite via `test_all.sh`.
-2. Build the standalone `j3270.jar` executable via `build_all.sh`.
-3. Upload `j3270.jar` as a downloadable artifact.
-4. Report test results and diagnostics.
+1. Compile and run the JUnit 5 test suite across the 3 LTS Java versions (Java 11, 17, and 21) via `test_all.sh`.
+2. Build standalone executables for each LTS version via `build_all.sh`.
+3. Upload `j3270-java11.jar`, `j3270-java17.jar`, and `j3270-java21.jar` as downloadable artifacts.
+4. Report test results and diagnostics per runtime.

 ---

@@ -98,7 +98,7 @@ This means Docker's bridge network inside the runner container cannot resolve th
 You can verify the entire build and test suite locally at any time without external tools:

 ```bash
-# Compile and run all 25 unit tests (130ms):
+# Compile and run all 539 unit tests (~7s):
 sh ./test_all.sh

 # Build executable standalone JAR:
@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.3.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
@@ -1,2 +1,249 @@
 #!/bin/sh
-exec "$(dirname "$0")/build_all.sh"
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
@@ -0,0 +1,92 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
@@ -3,6 +3,11 @@
 ; or:        ./run.sh -c j3270.ini

 [appearance]
+; UI font settings (menus, dialogs, status bar)
+; uiFontFamily = SansSerif
+; uiFontSize = 13
+;
+; Terminal font settings (3270 screen display)
 ; fontFamily = IBM 3270
 ; fontSize = 18

@@ -10,6 +15,7 @@
 ; startupBehavior = AUTO_CONNECT | SHOW_CONNECT | DO_NOTHING
 ; autoConnectHost = mainframe.example.com
 ; autoConnectPort = 23
+; blockPaste = true

 [colors]
 ; Host colors 0-15 (hex RGB)
@@ -7,12 +7,12 @@ dependencies {
 }

 application {
-    mainClass = 'org.pubvm.j3270.J3270App'
+    mainClass = 'haus.nightmare.j3270.J3270App'
 }

 jar {
    manifest {
-        attributes 'Main-Class': 'org.pubvm.j3270.J3270App',
+        attributes 'Main-Class': 'haus.nightmare.j3270.J3270App',
                   'Implementation-Title': 'j3270',
                   'Implementation-Version': archiveVersion
    }
@@ -0,0 +1,917 @@
+package haus.nightmare.j3270.config;
+
+import haus.nightmare.j3270.ui.UITheme;
+import java.util.prefs.Preferences;
+import java.awt.Color;
+import java.io.*;
+import java.io.PrintWriter;
+import java.util.logging.Logger;
+import java.util.logging.Level;
+
+public class Settings {
+    private static final Preferences prefs = Preferences.userNodeForPackage(Settings.class);
+    private static final Logger log = Logger.getLogger(Settings.class.getName());
+
+    public enum StartupBehavior {
+        SHOW_CONNECT,
+        DO_NOTHING,
+        AUTO_CONNECT
+    }
+
+    public static UITheme getJavaUiTheme() {
+        String themeStr = prefs.get("javaUiTheme", UITheme.DARK.name());
+        return UITheme.fromString(themeStr);
+    }
+
+    public static void setJavaUiTheme(UITheme theme) {
+        prefs.put("javaUiTheme", (theme != null ? theme : UITheme.DARK).name());
+    }
+
+    public static String getFontFamily() {
+        return prefs.get("fontFamily", "Monospaced");
+    }
+
+    public static void setFontFamily(String family) {
+        prefs.put("fontFamily", family);
+        flushPrefs();
+    }
+
+    public static int getFontSize() {
+        return prefs.getInt("fontSize", 16);
+    }
+
+    public static void setFontSize(int size) {
+        prefs.putInt("fontSize", size);
+        flushPrefs();
+    }
+
+    public static String getUiFontFamily() {
+        return prefs.get("uiFontFamily", "SansSerif");
+    }
+
+    public static void setUiFontFamily(String family) {
+        prefs.put("uiFontFamily", (family != null && !family.trim().isEmpty()) ? family : "SansSerif");
+        flushPrefs();
+    }
+
+    public static int getUiFontSize() {
+        return prefs.getInt("uiFontSize", 13);
+    }
+
+    public static void setUiFontSize(int size) {
+        prefs.putInt("uiFontSize", Math.max(8, Math.min(size, 48)));
+        flushPrefs();
+    }
+
+    private static void flushPrefs() {
+        try {
+            prefs.flush();
+        } catch (Exception ignored) {
+        }
+    }
+
+    public static StartupBehavior getStartupBehavior() {
+        String behaviorStr = prefs.get("startupBehavior", StartupBehavior.SHOW_CONNECT.name());
+        try {
+            return StartupBehavior.valueOf(behaviorStr);
+        } catch (IllegalArgumentException e) {
+            return StartupBehavior.SHOW_CONNECT;
+        }
+    }
+
+    public static void setStartupBehavior(StartupBehavior behavior) {
+        prefs.put("startupBehavior", behavior.name());
+    }
+
+    public static String getAutoConnectHost() {
+        return prefs.get("autoConnectHost", "");
+    }
+
+    public static void setAutoConnectHost(String host) {
+        prefs.put("autoConnectHost", host);
+    }
+
+    public static int getAutoConnectPort() {
+        return prefs.getInt("autoConnectPort", 23);
+    }
+
+    public static void setAutoConnectPort(int port) {
+        prefs.putInt("autoConnectPort", port);
+    }
+
+    public static boolean getAutoConnectTls() {
+        return prefs.getBoolean("autoConnectTls", false);
+    }
+
+    public static void setAutoConnectTls(boolean tls) {
+        prefs.putBoolean("autoConnectTls", tls);
+    }
+
+    public static boolean getAutoConnectVerifyCert() {
+        return prefs.getBoolean("autoConnectVerifyCert", true);
+    }
+
+    public static void setAutoConnectVerifyCert(boolean verify) {
+        prefs.putBoolean("autoConnectVerifyCert", verify);
+    }
+
+    public static boolean getAutoConnectTn3270e() {
+        return prefs.getBoolean("autoConnectTn3270e", true);
+    }
+
+    public static void setAutoConnectTn3270e(boolean tn3270e) {
+        prefs.putBoolean("autoConnectTn3270e", tn3270e);
+    }
+
+    public static boolean getAutoSysUnlock() {
+        return prefs.getBoolean("autoSysUnlock", true);
+    }
+
+    public static void setAutoSysUnlock(boolean autoSysUnlock) {
+        prefs.putBoolean("autoSysUnlock", autoSysUnlock);
+        flushPrefs();
+    }
+
+    public static boolean getAutoConnectKeepAlive() {
+        return prefs.getBoolean("autoConnectKeepAlive", true);
+    }
+
+    public static void setAutoConnectKeepAlive(boolean keepAlive) {
+        prefs.putBoolean("autoConnectKeepAlive", keepAlive);
+        flushPrefs();
+    }
+
+    public static int getAutoConnectKeepAliveInterval() {
+        return prefs.getInt("autoConnectKeepAliveInterval", 120);
+    }
+
+    public static void setAutoConnectKeepAliveInterval(int interval) {
+        prefs.putInt("autoConnectKeepAliveInterval", interval);
+        flushPrefs();
+    }
+
+    public static boolean getAutoConnectAutoReconnect() {
+        return prefs.getBoolean("autoConnectAutoReconnect", false);
+    }
+
+    public static void setAutoConnectAutoReconnect(boolean autoReconnect) {
+        prefs.putBoolean("autoConnectAutoReconnect", autoReconnect);
+        flushPrefs();
+    }
+
+    public static boolean getAutoReconnect() {
+        return getAutoConnectAutoReconnect();
+    }
+
+    public static void setAutoReconnect(boolean autoReconnect) {
+        setAutoConnectAutoReconnect(autoReconnect);
+    }
+
+    public static int getAutoConnectReconnectMaxRetries() {
+        return prefs.getInt("autoConnectReconnectMaxRetries", 5);
+    }
+
+    public static void setAutoConnectReconnectMaxRetries(int retries) {
+        prefs.putInt("autoConnectReconnectMaxRetries", retries);
+        flushPrefs();
+    }
+
+    public static boolean getInputMask() {
+        return prefs.getBoolean("inputMask", true);
+    }
+
+    public static void setInputMask(boolean mask) {
+        prefs.putBoolean("inputMask", mask);
+        flushPrefs();
+    }
+
+    public static boolean getInputMaskEnabled() {
+        return getInputMask();
+    }
+
+    public static void setInputMaskEnabled(boolean enabled) {
+        setInputMask(enabled);
+    }
+
+    public static String getInputMaskChar() {
+        return prefs.get("inputMaskChar", "*");
+    }
+
+    public static void setInputMaskChar(String ch) {
+        prefs.put("inputMaskChar", (ch != null && !ch.trim().isEmpty()) ? ch.trim().substring(0, 1) : "*");
+        flushPrefs();
+    }
+
+    public static haus.nightmare.lib3270j.graphics.GraphicsMode getGraphicsMode() {
+        String modeStr = prefs.get("graphicsMode", haus.nightmare.lib3270j.graphics.GraphicsMode.BOTH.name());
+        return haus.nightmare.lib3270j.graphics.GraphicsMode.fromString(modeStr);
+    }
+
+    public static void setGraphicsMode(haus.nightmare.lib3270j.graphics.GraphicsMode mode) {
+        prefs.put("graphicsMode", (mode != null ? mode : haus.nightmare.lib3270j.graphics.GraphicsMode.BOTH).name());
+    }
+
+    public static String getCodePage() {
+        return prefs.get("codePage", "037");
+    }
+
+    public static void setCodePage(String codePage) {
+        prefs.put("codePage", (codePage != null && !codePage.trim().isEmpty()) ? codePage.trim() : "037");
+    }
+
+    public static int getDynamicRows() {
+        return prefs.getInt("dynamicRows", 62);
+    }
+
+    public static void setDynamicRows(int rows) {
+        prefs.putInt("dynamicRows", Math.max(1, rows));
+    }
+
+    public static int getDynamicCols() {
+        return prefs.getInt("dynamicCols", 160);
+    }
+
+    public static void setDynamicCols(int cols) {
+        prefs.putInt("dynamicCols", Math.max(1, cols));
+    }
+
+    public static Color getColorOverride(int index, Color defaultColor) {
+        String hex = prefs.get("color_" + index, null);
+        try {
+            return hex != null ? Color.decode(hex) : defaultColor;
+        } catch (NumberFormatException e) {
+            return defaultColor;
+        }
+    }
+
+    public static void setColorOverride(int index, Color color) {
+        prefs.put("color_" + index, String.format("#%02x%02x%02x", color.getRed(), color.getGreen(), color.getBlue()));
+    }
+
+    public static Color getMonoColorOverride(String key, Color defaultColor) {
+        String hex = prefs.get("mono_" + key, null);
+        try {
+            return hex != null ? Color.decode(hex) : defaultColor;
+        } catch (NumberFormatException e) {
+            return defaultColor;
+        }
+    }
+
+    public static void setMonoColorOverride(String key, Color color) {
+        prefs.put("mono_" + key, String.format("#%02x%02x%02x", color.getRed(), color.getGreen(), color.getBlue()));
+    }
+
+    public static boolean isMac() {
+        String os = System.getProperty("os.name");
+        return os != null && os.toLowerCase().contains("mac");
+    }
+
+    public static String getDefaultBinding(String action) {
+        boolean mac = isMac();
+        switch (action) {
+            case "COPY":
+                return mac ? "meta C, ctrl C, ctrl INSERT, ctrl shift C" : "ctrl C, ctrl INSERT, ctrl shift C";
+            case "PASTE":
+                return mac ? "meta V, ctrl V, shift INSERT, ctrl shift V" : "ctrl V, shift INSERT, ctrl shift V";
+            case "SELECTALL":
+                return mac ? "meta A, ctrl A" : "ctrl A";
+            case "INSERT":
+                return mac ? "INSERT, HELP, alt I" : "INSERT, ctrl I";
+            case "ERASE_INPUT":
+                return "alt E";
+            case "NEWLINE":
+                return "shift ENTER";
+            case "DUP":
+                return "alt D";
+            case "FIELD_MARK":
+                return "alt M";
+            case "ATTN":
+                return "alt A";
+            case "SYSREQ":
+                return "alt S";
+            case "CURSEL":
+                return "alt Q";
+            case "CLEAR":
+                return "alt C";
+            case "STATUS_BAR":
+                return "alt B";
+            default:
+                return action;
+        }
+    }
+
+    public static String getKeyBinding(String action, String defaultBinding) {
+        String val = prefs.get("key_" + action, null);
+        if (val == null) {
+            return defaultBinding;
+        }
+        // If stored binding is the legacy single-key "INSERT" default, migrate it to the current platform default
+        if ("INSERT".equals(action) && "INSERT".equals(val)) {
+            prefs.put("key_INSERT", defaultBinding);
+            return defaultBinding;
+        }
+        // If stored binding is the legacy or corrupted "alt STE" for PASTE, migrate it to the current platform default
+        if ("PASTE".equals(action) && ("alt STE".equals(val) || "PASTE".equals(val))) {
+            prefs.put("key_PASTE", defaultBinding);
+            return defaultBinding;
+        }
+        return val;
+    }
+
+    public static void setKeyBinding(String action, String binding) {
+        prefs.put("key_" + action, binding);
+    }
+
+    /**
+     * Load settings from an INI-style configuration file.
+     * Sections: [appearance], [behavior], [colors], [keybindings]
+     *
+     * Example file:
+     * <pre>
+     * [appearance]
+     * fontFamily = IBM 3270
+     * fontSize = 18
+     *
+     * [behavior]
+     * startupBehavior = AUTO_CONNECT
+     * autoConnectHost = mainframe.example.com
+     * autoConnectPort = 23
+     *
+     * [colors]
+     * ; Host colors 0-15
+     * color_0 = #000000
+     * color_4 = #00ff00
+     * ; Monochrome / background
+     * mono_NORMAL = #32cd32
+     * mono_BACKGROUND = #0a0a0a
+     *
+     * [keybindings]
+     * ; Comma-separated for multiple bindings
+     * PF12 = F12, shift F12
+     * PF24 = UNBOUND
+     * CLEAR = alt C
+     * </pre>
+     */
+    public static void loadFromIniFile(String path) throws IOException {
+        File file = new File(path);
+        if (!file.exists()) {
+            throw new FileNotFoundException("Config file not found: " + path);
+        }
+
+        log.info("Loading configuration from: " + path);
+        String currentSection = "";
+
+        try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
+            String line;
+            int lineNum = 0;
+            while ((line = reader.readLine()) != null) {
+                lineNum++;
+                line = line.trim();
+
+                // Skip empty lines and comments
+                if (line.isEmpty() || line.startsWith(";") || line.startsWith("#")) {
+                    continue;
+                }
+
+                // Section header
+                if (line.startsWith("[") && line.endsWith("]")) {
+                    currentSection = line.substring(1, line.length() - 1).toLowerCase().trim();
+                    continue;
+                }
+
+                // Key = Value
+                int eq = line.indexOf('=');
+                if (eq < 0) {
+                    log.warning("Config line " + lineNum + ": no '=' found, skipping: " + line);
+                    continue;
+                }
+                String key = line.substring(0, eq).trim();
+                String value = line.substring(eq + 1).trim();
+
+                try {
+                    applyConfigEntry(currentSection, key, value);
+                } catch (Exception e) {
+                    log.log(Level.WARNING, "Config line " + lineNum + ": error applying " + key + "=" + value, e);
+                }
+            }
+        }
+        log.info("Configuration loaded successfully.");
+    }
+
+    // ========== Block select mode ==========
+
+    public static boolean getBlockSelectMode() {
+        return prefs.getBoolean("blockSelectMode", false);
+    }
+
+    public static void setBlockSelectMode(boolean block) {
+        prefs.putBoolean("blockSelectMode", block);
+    }
+
+    // ========== Block paste ==========
+
+    public static boolean getBlockPaste() {
+        return prefs.getBoolean("blockPaste", true);
+    }
+
+    public static void setBlockPaste(boolean block) {
+        prefs.putBoolean("blockPaste", block);
+        flushPrefs();
+    }
+
+    // ========== Clipboard & Tabular Paste ==========
+
+    public static boolean getEnablePasteFromExcel() {
+        return prefs.getBoolean("enablePasteFromExcel", true);
+    }
+
+    public static void setEnablePasteFromExcel(boolean val) {
+        prefs.putBoolean("enablePasteFromExcel", val);
+        flushPrefs();
+    }
+
+    public static boolean getPasteStopAtProtectedLine() {
+        return prefs.getBoolean("pasteStopAtProtectedLine", false);
+    }
+
+    public static void setPasteStopAtProtectedLine(boolean val) {
+        prefs.putBoolean("pasteStopAtProtectedLine", val);
+        flushPrefs();
+    }
+
+    // ========== Crosshair Ruler ==========
+
+    public static boolean getCrosshairRuler() {
+        return prefs.getBoolean("crosshairRuler", false);
+    }
+
+    public static void setCrosshairRuler(boolean enabled) {
+        prefs.putBoolean("crosshairRuler", enabled);
+    }
+
+    // ========== Status Bar Visibility ==========
+
+    public static boolean getStatusBarVisible() {
+        return prefs.getBoolean("statusBarVisible", true);
+    }
+
+    public static void setStatusBarVisible(boolean visible) {
+        prefs.putBoolean("statusBarVisible", visible);
+    }
+
+    // ========== Cursor Style ==========
+
+    public static String getCursorStyle() {
+        return prefs.get("cursorStyle", "BLOCK");
+    }
+
+    public static void setCursorStyle(String style) {
+        prefs.put("cursorStyle", style != null ? style.toUpperCase() : "BLOCK");
+    }
+
+    // ========== Entry Assist & Modes ==========
+
+    public static boolean getEntryAssistDocMode() {
+        return prefs.getBoolean("entryAssistDocMode", false);
+    }
+    public static void setEntryAssistDocMode(boolean docMode) {
+        prefs.putBoolean("entryAssistDocMode", docMode);
+    }
+
+    public static boolean getEntryAssistWordWrap() {
+        return prefs.getBoolean("entryAssistWordWrap", false);
+    }
+    public static void setEntryAssistWordWrap(boolean wordWrap) {
+        prefs.putBoolean("entryAssistWordWrap", wordWrap);
+    }
+
+    public static int getEntryAssistStartCol() {
+        return prefs.getInt("entryAssistStartCol", 1);
+    }
+    public static void setEntryAssistStartCol(int startCol) {
+        prefs.putInt("entryAssistStartCol", startCol);
+    }
+
+    public static int getEntryAssistEndCol() {
+        return prefs.getInt("entryAssistEndCol", 80);
+    }
+    public static void setEntryAssistEndCol(int endCol) {
+        prefs.putInt("entryAssistEndCol", endCol);
+    }
+
+    public static boolean getEntryAssistBell() {
+        return prefs.getBoolean("entryAssistBell", false);
+    }
+    public static void setEntryAssistBell(boolean bell) {
+        prefs.putBoolean("entryAssistBell", bell);
+    }
+
+    public static int getEntryAssistBellCol() {
+        return prefs.getInt("entryAssistBellCol", 75);
+    }
+    public static void setEntryAssistBellCol(int col) {
+        prefs.putInt("entryAssistBellCol", col);
+    }
+
+    public static String getEntryAssistTabStops() {
+        return prefs.get("entryAssistTabStops", "5,10,15,20,25,30,35,40,45,50,55,60,65,70,75");
+    }
+    public static void setEntryAssistTabStops(String stops) {
+        prefs.put("entryAssistTabStops", stops != null ? stops : "");
+    }
+
+    public static int[] getEntryAssistTabStopsArray() {
+        String s = getEntryAssistTabStops();
+        if (s == null || s.trim().isEmpty()) return new int[0];
+        String[] parts = s.split(",");
+        java.util.List<Integer> list = new java.util.ArrayList<>();
+        for (String p : parts) {
+            try {
+                int val = Integer.parseInt(p.trim());
+                if (val > 0) list.add(val - 1);
+            } catch (NumberFormatException ignored) {}
+        }
+        int[] res = new int[list.size()];
+        for (int i = 0; i < list.size(); i++) res[i] = list.get(i);
+        return res;
+    }
+
+    public static boolean getInsertOffOnAid() {
+        return prefs.getBoolean("insertOffOnAid", true);
+    }
+    public static void setInsertOffOnAid(boolean val) {
+        prefs.putBoolean("insertOffOnAid", val);
+    }
+
+    public static boolean getFourColorOverride() {
+        return prefs.getBoolean("fourColorOverride", false);
+    }
+    public static void setFourColorOverride(boolean val) {
+        prefs.putBoolean("fourColorOverride", val);
+    }
+
+    public static boolean getNumericFieldLock() {
+        return prefs.getBoolean("numericFieldLock", true);
+    }
+    public static void setNumericFieldLock(boolean val) {
+        prefs.putBoolean("numericFieldLock", val);
+    }
+
+    public static boolean getAutoSkipEnabled() {
+        return prefs.getBoolean("autoSkipEnabled", true);
+    }
+    public static void setAutoSkipEnabled(boolean val) {
+        prefs.putBoolean("autoSkipEnabled", val);
+    }
+
+    private static void applyConfigEntry(String section, String key, String value) {
+        switch (section) {
+            case "appearance":
+                switch (key) {
+                    case "fontFamily": setFontFamily(value); break;
+                    case "fontSize": setFontSize(Integer.parseInt(value)); break;
+                    case "uiFontFamily":
+                    case "uifontfamily":
+                    case "uifont":
+                    case "uiFont":
+                        setUiFontFamily(value);
+                        break;
+                    case "uiFontSize":
+                    case "uifontsize":
+                        setUiFontSize(Integer.parseInt(value));
+                        break;
+                    case "javaUiTheme":
+                    case "theme":
+                    case "uiTheme":
+                        setJavaUiTheme(UITheme.fromString(value));
+                        break;
+                    case "crosshairRuler":
+                    case "ruler":
+                        setCrosshairRuler(Boolean.parseBoolean(value));
+                        break;
+                    case "statusBarVisible":
+                    case "statusbar":
+                    case "statusBar":
+                    case "showStatusBar":
+                        setStatusBarVisible(Boolean.parseBoolean(value));
+                        break;
+                    case "cursorStyle":
+                        setCursorStyle(value);
+                        break;
+                    default:
+                        log.warning("Unknown appearance key: " + key);
+                }
+                break;
+
+            case "behavior":
+            case "connection":
+                switch (key) {
+                    case "startupBehavior":
+                        setStartupBehavior(StartupBehavior.valueOf(value.toUpperCase()));
+                        break;
+                    case "autoConnectHost":
+                    case "host":
+                        setAutoConnectHost(value);
+                        break;
+                    case "autoConnectPort":
+                    case "port":
+                        setAutoConnectPort(Integer.parseInt(value));
+                        break;
+                    case "autoConnectTls":
+                    case "tls":
+                    case "ssl":
+                    case "useTls":
+                        setAutoConnectTls(Boolean.parseBoolean(value));
+                        break;
+                    case "autoConnectVerifyCert":
+                    case "verifyCert":
+                    case "tlsVerifyCert":
+                        setAutoConnectVerifyCert(Boolean.parseBoolean(value));
+                        break;
+                    case "autoConnectTn3270e":
+                    case "tn3270e":
+                    case "enableTn3270e":
+                        setAutoConnectTn3270e(Boolean.parseBoolean(value));
+                        break;
+                    case "codePage":
+                    case "codepage":
+                    case "charset":
+                        setCodePage(value);
+                        break;
+                    case "dynamicRows":
+                    case "dynamic_rows":
+                        setDynamicRows(Integer.parseInt(value));
+                        break;
+                    case "dynamicCols":
+                    case "dynamic_cols":
+                        setDynamicCols(Integer.parseInt(value));
+                        break;
+                    case "blockSelectMode": setBlockSelectMode(Boolean.parseBoolean(value)); break;
+                    case "blockPaste": setBlockPaste(Boolean.parseBoolean(value)); break;
+                    case "autoReconnect":
+                    case "auto_reconnect":
+                    case "autoConnectAutoReconnect":
+                        setAutoConnectAutoReconnect(Boolean.parseBoolean(value));
+                        break;
+                    case "reconnectMaxRetries":
+                    case "autoConnectReconnectMaxRetries":
+                        setAutoConnectReconnectMaxRetries(Integer.parseInt(value));
+                        break;
+                    case "inputMask":
+                    case "input_mask":
+                    case "inputMaskEnabled":
+                    case "maskInput":
+                        setInputMask(Boolean.parseBoolean(value));
+                        break;
+                    case "inputMaskChar":
+                    case "input_mask_char":
+                    case "maskChar":
+                        setInputMaskChar(value);
+                        break;
+                    case "autoSysUnlock":
+                    case "auto_sys_unlock":
+                        setAutoSysUnlock(Boolean.parseBoolean(value));
+                        break;
+                    case "blockPasteMode":
+                        setBlockPaste(Boolean.parseBoolean(value));
+                        break;
+                    case "enablePasteFromExcel":
+                    case "pasteFromExcel":
+                    case "excelPaste":
+                        setEnablePasteFromExcel(Boolean.parseBoolean(value));
+                        break;
+                    case "pasteStopAtProtectedLine":
+                    case "stopAtProtected":
+                    case "pasteStopAtProtected":
+                        setPasteStopAtProtectedLine(Boolean.parseBoolean(value));
+                        break;
+                    default:
+                        log.warning("Unknown behavior/connection key: " + key);
+                }
+                break;
+
+            case "clipboard":
+                switch (key) {
+                    case "blockPaste":
+                    case "blockPasteMode":
+                        setBlockPaste(Boolean.parseBoolean(value));
+                        break;
+                    case "enablePasteFromExcel":
+                    case "pasteFromExcel":
+                    case "excelPaste":
+                        setEnablePasteFromExcel(Boolean.parseBoolean(value));
+                        break;
+                    case "pasteStopAtProtectedLine":
+                    case "stopAtProtected":
+                    case "pasteStopAtProtected":
+                        setPasteStopAtProtectedLine(Boolean.parseBoolean(value));
+                        break;
+                    default:
+                        log.warning("Unknown clipboard key: " + key);
+                }
+                break;
+
+            case "colors":
+                if (key.startsWith("color_")) {
+                    int index = Integer.parseInt(key.substring(6));
+                    setColorOverride(index, Color.decode(value));
+                } else if (key.startsWith("mono_")) {
+                    String monoKey = key.substring(5);
+                    setMonoColorOverride(monoKey, Color.decode(value));
+                } else {
+                    log.warning("Unknown colors key: " + key);
+                }
+                break;
+
+            case "keybindings":
+                setKeyBinding(key, value);
+                break;
+
+            case "graphics":
+                if ("graphicsMode".equalsIgnoreCase(key) || "mode".equalsIgnoreCase(key)) {
+                    setGraphicsMode(haus.nightmare.lib3270j.graphics.GraphicsMode.fromString(value));
+                } else {
+                    log.warning("Unknown graphics key: " + key);
+                }
+                break;
+
+            case "entryassist":
+            case "modes":
+                switch (key) {
+                    case "docMode":
+                    case "entryAssistDocMode":
+                        setEntryAssistDocMode(Boolean.parseBoolean(value));
+                        break;
+                    case "wordWrap":
+                    case "entryAssistWordWrap":
+                        setEntryAssistWordWrap(Boolean.parseBoolean(value));
+                        break;
+                    case "startCol":
+                    case "entryAssistStartCol":
+                        setEntryAssistStartCol(Integer.parseInt(value));
+                        break;
+                    case "endCol":
+                    case "entryAssistEndCol":
+                        setEntryAssistEndCol(Integer.parseInt(value));
+                        break;
+                    case "bell":
+                    case "entryAssistBell":
+                        setEntryAssistBell(Boolean.parseBoolean(value));
+                        break;
+                    case "bellCol":
+                    case "entryAssistBellCol":
+                        setEntryAssistBellCol(Integer.parseInt(value));
+                        break;
+                    case "tabStops":
+                    case "entryAssistTabStops":
+                        setEntryAssistTabStops(value);
+                        break;
+                    case "insertOffOnAid":
+                        setInsertOffOnAid(Boolean.parseBoolean(value));
+                        break;
+                    case "fourColorOverride":
+                        setFourColorOverride(Boolean.parseBoolean(value));
+                        break;
+                    case "numericFieldLock":
+                        setNumericFieldLock(Boolean.parseBoolean(value));
+                        break;
+                    case "autoSkip":
+                    case "autoSkipEnabled":
+                        setAutoSkipEnabled(Boolean.parseBoolean(value));
+                        break;
+                    default:
+                        log.warning("Unknown entryassist/modes key: " + key);
+                }
+                break;
+
+            default:
+                // Allow bare keys outside any section — treat as raw prefs
+                log.fine("Setting raw preference: " + key + " = " + value);
+                prefs.put(key, value);
+                break;
+        }
+    }
+
+    // ========== Export to INI ==========
+
+    /**
+     * Export the current configuration to an INI-style file.
+     * Writes all settings including appearance, behavior, colors, and keybindings.
+     */
+    public static void exportToIniFile(String path) throws IOException {
+        try (PrintWriter w = new PrintWriter(new BufferedWriter(new FileWriter(path)))) {
+            w.println("; j3270 Configuration File");
+            w.println("; Exported on " + new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new java.util.Date()));
+            w.println("; Load with: java -jar j3270.jar -c " + new File(path).getName());
+            w.println();
+
+            // [appearance]
+            w.println("[appearance]");
+            w.println("javaUiTheme = " + getJavaUiTheme().name());
+            w.println("uiFontFamily = " + getUiFontFamily());
+            w.println("uiFontSize = " + getUiFontSize());
+            w.println("fontFamily = " + getFontFamily());
+            w.println("fontSize = " + getFontSize());
+            w.println("crosshairRuler = " + getCrosshairRuler());
+            w.println("statusBarVisible = " + getStatusBarVisible());
+            w.println("cursorStyle = " + getCursorStyle());
+            w.println();
+
+            // [behavior]
+            w.println("[behavior]");
+            w.println("startupBehavior = " + getStartupBehavior().name());
+            String acHost = getAutoConnectHost();
+            if (acHost != null && !acHost.isEmpty()) {
+                w.println("autoConnectHost = " + acHost);
+                w.println("autoConnectPort = " + getAutoConnectPort());
+                w.println("autoConnectTls = " + getAutoConnectTls());
+                w.println("autoConnectVerifyCert = " + getAutoConnectVerifyCert());
+                w.println("autoConnectTn3270e = " + getAutoConnectTn3270e());
+            }
+            w.println("codePage = " + getCodePage());
+            w.println("dynamicRows = " + getDynamicRows());
+            w.println("dynamicCols = " + getDynamicCols());
+            w.println("blockSelectMode = " + getBlockSelectMode());
+            w.println("blockPaste = " + getBlockPaste());
+            w.println("autoReconnect = " + getAutoConnectAutoReconnect());
+            w.println("autoConnectReconnectMaxRetries = " + getAutoConnectReconnectMaxRetries());
+            w.println("inputMask = " + getInputMask());
+            w.println("inputMaskChar = " + getInputMaskChar());
+            w.println("autoSysUnlock = " + getAutoSysUnlock());
+            w.println("enablePasteFromExcel = " + getEnablePasteFromExcel());
+            w.println("pasteStopAtProtectedLine = " + getPasteStopAtProtectedLine());
+            w.println();
+
+            // [entryassist]
+            w.println("[entryassist]");
+            w.println("docMode = " + getEntryAssistDocMode());
+            w.println("wordWrap = " + getEntryAssistWordWrap());
+            w.println("startCol = " + getEntryAssistStartCol());
+            w.println("endCol = " + getEntryAssistEndCol());
+            w.println("bell = " + getEntryAssistBell());
+            w.println("bellCol = " + getEntryAssistBellCol());
+            w.println("tabStops = " + getEntryAssistTabStops());
+            w.println();
+
+            // [modes]
+            w.println("[modes]");
+            w.println("insertOffOnAid = " + getInsertOffOnAid());
+            w.println("fourColorOverride = " + getFourColorOverride());
+            w.println("numericFieldLock = " + getNumericFieldLock());
+            w.println("autoSkip = " + getAutoSkipEnabled());
+            w.println();
+
+            // [graphics]
+            w.println("[graphics]");
+            w.println("graphicsMode = " + getGraphicsMode().name());
+            w.println();
+
+            // [colors]
+            w.println("[colors]");
+            // Host colors 0-15
+            for (int i = 0; i < 16; i++) {
+                String hex = prefs.get("color_" + i, null);
+                if (hex != null) {
+                    w.println("color_" + i + " = " + hex);
+                }
+            }
+            // Mono colors
+            String[] monoKeys = {"NORMAL", "INTENSIFY", "PROTECTED", "PROTECTED_HIGH", "BACKGROUND"};
+            for (String mk : monoKeys) {
+                String hex = prefs.get("mono_" + mk, null);
+                if (hex != null) {
+                    w.println("mono_" + mk + " = " + hex);
+                }
+            }
+            w.println();
+
+            // [keybindings]
+            w.println("[keybindings]");
+            // Navigation & clipboard keys
+            String[] navActions = {"ENTER", "TAB", "shift TAB", "UP", "DOWN", "LEFT", "RIGHT",
+                "HOME", "END", "PAGE_UP", "PAGE_DOWN", "ESCAPE", "INSERT", "DELETE", "BACK_SPACE", "CLEAR",
+                "STATUS_BAR", "COPY", "PASTE", "SELECTALL"};
+            for (String act : navActions) {
+                String val = prefs.get("key_" + act, null);
+                if (val != null) {
+                    w.println(act + " = " + val);
+                }
+            }
+            // PF keys
+            for (int i = 1; i <= 24; i++) {
+                String val = prefs.get("key_PF" + i, null);
+                if (val != null) {
+                    w.println("PF" + i + " = " + val);
+                }
+            }
+            // PA keys
+            for (int i = 1; i <= 3; i++) {
+                String val = prefs.get("key_PA" + i, null);
+                if (val != null) {
+                    w.println("PA" + i + " = " + val);
+                }
+            }
+        }
+        log.info("Configuration exported to: " + path);
+    }
+}
@@ -1,10 +1,10 @@
-package org.pubvm.j3270.ft;
+package haus.nightmare.j3270.ft;

-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;
@@ -53,6 +53,10 @@ public class FileTransfer implements FTCut.FTCutListener, FTDft.FTDftListener {
        this.callback = callback;
    }

+    public Telnet3270Client getClient() {
+        return client;
+    }
+
    /**
     * Start a new file transfer with the given configuration.
     * @return null if started successfully, error message otherwise.
@@ -121,6 +125,21 @@ public class FileTransfer implements FTCut.FTCutListener, FTDft.FTDftListener {
        if (state == FTState.RUNNING || state == FTState.AWAIT_ACK) {
            log.info("User cancelled transfer");
            setState(FTState.ABORT_WAIT); // Signal handlers to abort at next chance
+            // Start a safety timeout in case the host does not send further packets to trigger abort
+            cancelTimeout();
+            timeoutTimer = new Timer("FTCancelTimeout", true);
+            timeoutTimer.schedule(new TimerTask() {
+                @Override
+                public void run() {
+                    SwingUtilities.invokeLater(() -> {
+                        if (state != FTState.NONE) {
+                            log.warning("Transfer cancel timeout — force resetting state");
+                            completeTransfer("Transfer cancelled by user.");
+                            callback.onTransferAborted("Cancelled by user.");
+                        }
+                    });
+                }
+            }, 3000);
        } else if (state != FTState.NONE) {
            log.info("Forcing cancel from state " + state);
            completeTransfer("Transfer cancelled.");
@@ -0,0 +1,490 @@
+package haus.nightmare.j3270.ft;
+
+import haus.nightmare.j3270.ui.AppIcon;
+import haus.nightmare.j3270.ui.HostDirectoryDialog;
+import haus.nightmare.j3270.ui.ThemeManager;
+import haus.nightmare.lib3270j.ft.FTConfig;
+import haus.nightmare.lib3270j.ft.FTConstants;
+
+import javax.swing.*;
+import javax.swing.border.EmptyBorder;
+import java.awt.*;
+import java.io.File;
+
+public class FileTransferDialog extends JDialog {
+
+    public static class TransferSessionState {
+        public FTConfig.HostType hostType = FTConfig.HostType.TSO;
+        public boolean isSend = false;
+        public String localFile = "";
+        public String hostFile = "";
+        public boolean isAscii = true;
+        public int mtu = FTConstants.DFT_BUF;
+        public boolean crFlag = true;
+        public boolean remapFlag = true;
+        public boolean append = false;
+        public boolean overwrite = false;
+        public String recfm = "";
+        public String lrecl = "";
+        public String blksize = "";
+        public String space = "";
+        public String options = "";
+    }
+
+    private static TransferSessionState lastTransferState = null;
+
+    public static TransferSessionState getLastTransferState() {
+        return lastTransferState;
+    }
+
+    public static void setLastTransferState(TransferSessionState state) {
+        lastTransferState = state;
+    }
+
+    public static void resetSessionState() {
+        lastTransferState = null;
+    }
+
+    public static String formatHostFilename(String localPath, FTConfig.HostType hostType) {
+        if (localPath == null || localPath.trim().isEmpty()) {
+            return "";
+        }
+        File f = new File(localPath.trim());
+        String name = f.getName();
+        if (hostType == FTConfig.HostType.CMS) {
+            name = name.replace('.', ' ');
+        }
+        return name;
+    }
+
+    private final FileTransfer coordinator;
+    private final Frame owner;
+
+    private JComboBox<FTConfig.HostType> hostTypeCombo;
+    private JRadioButton sendRadio;
+    private JRadioButton receiveRadio;
+    private JTextField localFileField;
+    private JButton browseLocalButton;
+    private JTextField hostFileField;
+    private JButton browseHostButton;
+    private JComboBox<Integer> mtuCombo;
+
+    // Options
+    private JRadioButton asciiRadio;
+    private JRadioButton binaryRadio;
+    private JCheckBox crCheck;
+    private JCheckBox remapCheck;
+    private JCheckBox appendCheck;
+    private JCheckBox overwriteCheck;
+
+    // TSO specific
+    private JTextField recfmField;
+    private JTextField lreclField;
+    private JTextField blksizeField;
+    private JTextField spaceField;
+
+    // VM specific
+    private JTextField optionsField;
+
+    private JButton transferButton;
+    private JButton cancelButton;
+
+    public FileTransferDialog(Frame owner, FileTransfer coordinator) {
+        super(owner, "File Transfer (IND$FILE)", false);
+        this.owner = owner;
+        this.coordinator = coordinator;
+        AppIcon.applyTo(this);
+        
+        buildUI();
+        pack();
+        setLocationRelativeTo(owner);
+    }
+
+    private void buildUI() {
+        JPanel mainPanel = new JPanel(new BorderLayout(10, 10));
+        mainPanel.setBorder(new EmptyBorder(10, 10, 10, 10));
+        mainPanel.setBackground(new Color(25, 25, 25));
+
+        // Create form panel
+        JPanel formPanel = new JPanel();
+        formPanel.setLayout(new BoxLayout(formPanel, BoxLayout.Y_AXIS));
+        formPanel.setOpaque(false);
+
+        // Host Type
+        hostTypeCombo = new JComboBox<>(FTConfig.HostType.values());
+        hostTypeCombo.addActionListener(e -> {
+            updateOptionStates();
+            FTConfig.HostType hostType = (FTConfig.HostType) hostTypeCombo.getSelectedItem();
+            if (hostType == FTConfig.HostType.CMS) {
+                String hostText = hostFileField.getText().trim();
+                if (hostText.contains(".")) {
+                    hostFileField.setText(hostText.replace('.', ' '));
+                }
+            }
+        });
+        formPanel.add(createRow("Host Environment:", hostTypeCombo));
+
+        // Direction
+        sendRadio = new JRadioButton("Send to Host");
+        receiveRadio = new JRadioButton("Receive from Host");
+        receiveRadio.setSelected(true);
+        ButtonGroup dirGroup = new ButtonGroup();
+        dirGroup.add(sendRadio);
+        dirGroup.add(receiveRadio);
+        JPanel dirPanel = new JPanel(new FlowLayout(FlowLayout.LEFT, 0, 0));
+        dirPanel.setOpaque(false);
+        dirPanel.add(receiveRadio);
+        dirPanel.add(Box.createRigidArea(new Dimension(15, 0)));
+        dirPanel.add(sendRadio);
+        
+        sendRadio.addActionListener(e -> updateOptionStates());
+        receiveRadio.addActionListener(e -> updateOptionStates());
+
+        formPanel.add(createRow("Direction:", dirPanel));
+
+        // Local File
+        localFileField = new JTextField(20);
+        localFileField.addFocusListener(new java.awt.event.FocusAdapter() {
+            @Override
+            public void focusLost(java.awt.event.FocusEvent e) {
+                if (hostFileField.getText().trim().isEmpty() && !localFileField.getText().trim().isEmpty()) {
+                    FTConfig.HostType hostType = (FTConfig.HostType) hostTypeCombo.getSelectedItem();
+                    hostFileField.setText(formatHostFilename(localFileField.getText(), hostType));
+                }
+            }
+        });
+        browseLocalButton = new JButton("Browse...");
+        ThemeManager.styleButton(browseLocalButton, ThemeManager.ButtonVariant.DEFAULT);
+        browseLocalButton.addActionListener(e -> browseLocalFile());
+        JPanel localPanel = new JPanel(new BorderLayout(5, 0));
+        localPanel.setOpaque(false);
+        localPanel.add(localFileField, BorderLayout.CENTER);
+        localPanel.add(browseLocalButton, BorderLayout.EAST);
+        formPanel.add(createRow("Local File:", localPanel));
+
+        // Host File
+        hostFileField = new JTextField(20);
+        browseHostButton = new JButton("Browse Host...");
+        ThemeManager.styleButton(browseHostButton, ThemeManager.ButtonVariant.DEFAULT);
+        browseHostButton.addActionListener(e -> browseHostDirectory());
+        JPanel hostPanel = new JPanel(new BorderLayout(5, 0));
+        hostPanel.setOpaque(false);
+        hostPanel.add(hostFileField, BorderLayout.CENTER);
+        hostPanel.add(browseHostButton, BorderLayout.EAST);
+        formPanel.add(createRow("Host File:", hostPanel));
+
+        // Mode
+        asciiRadio = new JRadioButton("ASCII");
+        asciiRadio.setSelected(true);
+        binaryRadio = new JRadioButton("Binary");
+        ButtonGroup modeGroup = new ButtonGroup();
+        modeGroup.add(asciiRadio);
+        modeGroup.add(binaryRadio);
+        JPanel modePanel = new JPanel(new FlowLayout(FlowLayout.LEFT, 0, 0));
+        modePanel.setOpaque(false);
+        modePanel.add(asciiRadio);
+        modePanel.add(Box.createRigidArea(new Dimension(15, 0)));
+        modePanel.add(binaryRadio);
+        
+        asciiRadio.addActionListener(e -> updateOptionStates());
+        binaryRadio.addActionListener(e -> updateOptionStates());
+
+        formPanel.add(createRow("Transfer Mode:", modePanel));
+
+        // MTU Buffer Size
+        mtuCombo = new JComboBox<>(new Integer[]{2048, 4096, 8192, 16384, 32768});
+        mtuCombo.setSelectedItem(FTConstants.DFT_BUF);
+        formPanel.add(createRow("DFT Buffer Size:", mtuCombo));
+
+        // Options (checkboxes)
+        crCheck = new JCheckBox("Add/Remove CR");
+        crCheck.setSelected(true);
+        remapCheck = new JCheckBox("Remap Character Set");
+        remapCheck.setSelected(true);
+        appendCheck = new JCheckBox("Append to file");
+        overwriteCheck = new JCheckBox("Overwrite existing");
+
+        JPanel optionsPanel1 = new JPanel(new FlowLayout(FlowLayout.LEFT, 0, 0));
+        optionsPanel1.setOpaque(false);
+        optionsPanel1.add(crCheck);
+        optionsPanel1.add(Box.createRigidArea(new Dimension(15, 0)));
+        optionsPanel1.add(remapCheck);
+        
+        JPanel optionsPanel2 = new JPanel(new FlowLayout(FlowLayout.LEFT, 0, 0));
+        optionsPanel2.setOpaque(false);
+        optionsPanel2.add(appendCheck);
+        optionsPanel2.add(Box.createRigidArea(new Dimension(15, 0)));
+        optionsPanel2.add(overwriteCheck);
+
+        formPanel.add(createRow("Text Options:", optionsPanel1));
+        formPanel.add(createRow("File Options:", optionsPanel2));
+
+        // Host-specific options panel (TSO dataset allocation)
+        JPanel hostOptsPanel = new JPanel(new GridLayout(2, 4, 5, 5));
+        hostOptsPanel.setOpaque(false);
+        hostOptsPanel.setBorder(ThemeManager.createTitledBorder("TSO Allocation Options (Send Only)"));
+
+        hostOptsPanel.add(new JLabel("RECFM:"));
+        recfmField = new JTextField(5);
+        hostOptsPanel.add(recfmField);
+        
+        hostOptsPanel.add(new JLabel("LRECL:"));
+        lreclField = new JTextField(5);
+        hostOptsPanel.add(lreclField);
+
+        hostOptsPanel.add(new JLabel("BLKSIZE:"));
+        blksizeField = new JTextField(5);
+        hostOptsPanel.add(blksizeField);
+
+        hostOptsPanel.add(new JLabel("SPACE:"));
+        spaceField = new JTextField(15);
+        hostOptsPanel.add(spaceField);
+
+        formPanel.add(Box.createRigidArea(new Dimension(0, 10)));
+        formPanel.add(hostOptsPanel);
+
+        // CMS options
+        JPanel vmOptsPanel = new JPanel(new BorderLayout(5, 0));
+        vmOptsPanel.setOpaque(false);
+        vmOptsPanel.setBorder(ThemeManager.createTitledBorder("CMS Options"));
+        
+        optionsField = new JTextField(20);
+        vmOptsPanel.add(new JLabel("Additional Options: "), BorderLayout.WEST);
+        vmOptsPanel.add(optionsField, BorderLayout.CENTER);
+        
+        formPanel.add(Box.createRigidArea(new Dimension(0, 10)));
+        formPanel.add(vmOptsPanel);
+
+        mainPanel.add(formPanel, BorderLayout.CENTER);
+
+        // Buttons
+        JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT));
+        buttonPanel.setOpaque(false);
+        
+        transferButton = new JButton("Start Transfer");
+        ThemeManager.styleButton(transferButton, ThemeManager.ButtonVariant.PRIMARY);
+        transferButton.addActionListener(e -> startTransfer());
+        
+        cancelButton = new JButton("Close");
+        ThemeManager.styleButton(cancelButton, ThemeManager.ButtonVariant.CANCEL);
+        cancelButton.addActionListener(e -> dispose());
+        
+        buttonPanel.add(cancelButton);
+        buttonPanel.add(transferButton);
+        
+        mainPanel.add(buttonPanel, BorderLayout.SOUTH);
+
+        setContentPane(mainPanel);
+        
+        prefillFromLastTransfer();
+        ThemeManager.applyThemeToWindow(this);
+        updateOptionStates();
+    }
+
+    private void prefillFromLastTransfer() {
+        if (lastTransferState != null) {
+            if (lastTransferState.hostType != null) {
+                hostTypeCombo.setSelectedItem(lastTransferState.hostType);
+            }
+            sendRadio.setSelected(lastTransferState.isSend);
+            receiveRadio.setSelected(!lastTransferState.isSend);
+            if (lastTransferState.localFile != null) {
+                localFileField.setText(lastTransferState.localFile);
+            }
+            if (lastTransferState.hostFile != null) {
+                hostFileField.setText(lastTransferState.hostFile);
+            }
+            asciiRadio.setSelected(lastTransferState.isAscii);
+            binaryRadio.setSelected(!lastTransferState.isAscii);
+            if (lastTransferState.mtu > 0) {
+                mtuCombo.setSelectedItem(lastTransferState.mtu);
+            }
+            crCheck.setSelected(lastTransferState.crFlag);
+            remapCheck.setSelected(lastTransferState.remapFlag);
+            appendCheck.setSelected(lastTransferState.append);
+            overwriteCheck.setSelected(lastTransferState.overwrite);
+            if (lastTransferState.recfm != null) recfmField.setText(lastTransferState.recfm);
+            if (lastTransferState.lrecl != null) lreclField.setText(lastTransferState.lrecl);
+            if (lastTransferState.blksize != null) blksizeField.setText(lastTransferState.blksize);
+            if (lastTransferState.space != null) spaceField.setText(lastTransferState.space);
+            if (lastTransferState.options != null) optionsField.setText(lastTransferState.options);
+        }
+    }
+
+    private void updateOptionStates() {
+        boolean isSend = sendRadio.isSelected();
+        boolean isAscii = asciiRadio.isSelected();
+        FTConfig.HostType hostType = (FTConfig.HostType) hostTypeCombo.getSelectedItem();
+        boolean isTso = (hostType == FTConfig.HostType.TSO);
+        boolean isCms = (hostType == FTConfig.HostType.CMS);
+
+        appendCheck.setEnabled(!isSend);
+        overwriteCheck.setEnabled(!isSend);
+        
+        crCheck.setEnabled(isAscii);
+        remapCheck.setEnabled(isAscii);
+        
+        recfmField.setEnabled(isSend && isTso);
+        lreclField.setEnabled(isSend && isTso);
+        blksizeField.setEnabled(isSend && isTso);
+        spaceField.setEnabled(isSend && isTso);
+        optionsField.setEnabled(isCms);
+    }
+
+    private JPanel createRow(String labelText, Component comp) {
+        JPanel row = new JPanel(new BorderLayout(10, 0));
+        row.setOpaque(false);
+        JLabel label = new JLabel(labelText);
+        label.setPreferredSize(new Dimension(130, 25));
+        row.add(label, BorderLayout.WEST);
+        row.add(comp, BorderLayout.CENTER);
+        row.setBorder(new EmptyBorder(0, 0, 5, 0));
+        return row;
+    }
+
+    private void browseLocalFile() {
+        JFileChooser chooser = new JFileChooser();
+        if (chooser.showOpenDialog(this) == JFileChooser.APPROVE_OPTION) {
+            File selected = chooser.getSelectedFile();
+            localFileField.setText(selected.getAbsolutePath());
+            FTConfig.HostType hostType = (FTConfig.HostType) hostTypeCombo.getSelectedItem();
+            boolean shouldAutofill = hostFileField.getText().trim().isEmpty() ||
+                    (lastTransferState != null && hostFileField.getText().trim().equals(lastTransferState.hostFile));
+            if (shouldAutofill) {
+                hostFileField.setText(formatHostFilename(selected.getName(), hostType));
+            }
+        }
+    }
+
+    private void browseHostDirectory() {
+        FTConfig.HostType hostType = (FTConfig.HostType) hostTypeCombo.getSelectedItem();
+        String initialQuery = hostFileField.getText().trim();
+        HostDirectoryDialog dialog = new HostDirectoryDialog(this, coordinator.getClient(), hostType, initialQuery);
+        dialog.setVisible(true);
+
+        if (dialog.isConfirmed() && dialog.getSelectedHostFile() != null) {
+            hostFileField.setText(dialog.getSelectedHostFile());
+            boolean shouldAutofill = localFileField.getText().trim().isEmpty() ||
+                    (lastTransferState != null && localFileField.getText().trim().equals(lastTransferState.localFile));
+            if (shouldAutofill) {
+                String cleanName = dialog.getSelectedHostFile().replace("'", "").replace("\"", "");
+                if (hostType == FTConfig.HostType.CMS) {
+                    String[] tokens = cleanName.trim().split("\\s+");
+                    if (tokens.length >= 2) {
+                        cleanName = tokens[0].toLowerCase() + "." + tokens[1].toLowerCase();
+                    } else if (tokens.length == 1) {
+                        cleanName = tokens[0].toLowerCase();
+                    }
+                } else {
+                    int lastDot = cleanName.lastIndexOf('.');
+                    if (lastDot > 0) cleanName = cleanName.substring(lastDot + 1);
+                }
+                localFileField.setText(cleanName);
+            }
+        }
+    }
+
+    private void startTransfer() {
+        if (localFileField.getText().trim().isEmpty() || hostFileField.getText().trim().isEmpty()) {
+            JOptionPane.showMessageDialog(this, "Local and Host filenames are required.",
+                    "Error", JOptionPane.ERROR_MESSAGE);
+            return;
+        }
+
+        FTConfig config = new FTConfig();
+        config.setHostType((FTConfig.HostType) hostTypeCombo.getSelectedItem());
+        config.setLocalFilename(localFileField.getText().trim());
+        config.setHostFilename(hostFileField.getText().trim());
+        config.setReceive(receiveRadio.isSelected());
+        config.setAscii(asciiRadio.isSelected());
+        config.setCrFlag(crCheck.isSelected());
+        config.setRemapFlag(remapCheck.isSelected());
+        config.setAppend(appendCheck.isSelected());
+        config.setOverwrite(overwriteCheck.isSelected());
+        
+        Integer mtu = (Integer) mtuCombo.getSelectedItem();
+        if (mtu != null) {
+            config.setDftBufferSize(mtu);
+        }
+
+        config.setRecfm(recfmField.getText().trim());
+        config.setLrecl(lreclField.getText().trim());
+        config.setBlksize(blksizeField.getText().trim());
+        config.setSpace(spaceField.getText().trim());
+        config.setOptions(optionsField.getText().trim());
+
+        recordSessionTransfer();
+
+        String error = coordinator.startTransfer(config);
+        if (error != null) {
+            JOptionPane.showMessageDialog(this, error, "Transfer Error", JOptionPane.ERROR_MESSAGE);
+        } else {
+            dispose();
+        }
+    }
+
+    public void recordSessionTransfer() {
+        TransferSessionState state = new TransferSessionState();
+        state.hostType = (FTConfig.HostType) hostTypeCombo.getSelectedItem();
+        state.isSend = sendRadio.isSelected();
+        state.localFile = localFileField.getText().trim();
+        state.hostFile = hostFileField.getText().trim();
+        state.isAscii = asciiRadio.isSelected();
+        Integer mtu = (Integer) mtuCombo.getSelectedItem();
+        state.mtu = (mtu != null) ? mtu : FTConstants.DFT_BUF;
+        state.crFlag = crCheck.isSelected();
+        state.remapFlag = remapCheck.isSelected();
+        state.append = appendCheck.isSelected();
+        state.overwrite = overwriteCheck.isSelected();
+        state.recfm = recfmField.getText().trim();
+        state.lrecl = lreclField.getText().trim();
+        state.blksize = blksizeField.getText().trim();
+        state.space = spaceField.getText().trim();
+        state.options = optionsField.getText().trim();
+        lastTransferState = state;
+    }
+
+    public JComboBox<FTConfig.HostType> getHostTypeCombo() { return hostTypeCombo; }
+    public JRadioButton getSendRadio() { return sendRadio; }
+    public JRadioButton getReceiveRadio() { return receiveRadio; }
+    public JTextField getLocalFileField() { return localFileField; }
+    public JTextField getHostFileField() { return hostFileField; }
+    public JRadioButton getAsciiRadio() { return asciiRadio; }
+    public JRadioButton getBinaryRadio() { return binaryRadio; }
+    public JComboBox<Integer> getMtuCombo() { return mtuCombo; }
+    public JCheckBox getCrCheck() { return crCheck; }
+    public JCheckBox getRemapCheck() { return remapCheck; }
+    public JCheckBox getAppendCheck() { return appendCheck; }
+    public JCheckBox getOverwriteCheck() { return overwriteCheck; }
+    public JTextField getRecfmField() { return recfmField; }
+    public JTextField getLreclField() { return lreclField; }
+    public JTextField getBlksizeField() { return blksizeField; }
+    public JTextField getSpaceField() { return spaceField; }
+    public JTextField getOptionsField() { return optionsField; }
+
+    private void applyTheme(Container container) {
+        Color fg = new Color(200, 200, 200);
+        Color bg = new Color(40, 40, 40);
+        for (Component c : container.getComponents()) {
+            c.setForeground(fg);
+            if (c instanceof JTextField || c instanceof JComboBox) {
+                c.setBackground(bg);
+                if (c instanceof JTextField) {
+                    ((JTextField) c).setCaretColor(fg);
+                    ((JTextField) c).setBorder(BorderFactory.createCompoundBorder(
+                            BorderFactory.createLineBorder(new Color(60, 60, 60)),
+                            new EmptyBorder(2, 5, 2, 5)));
+                }
+            } else if (c instanceof JButton) {
+                c.setBackground(new Color(50, 50, 50));
+                c.setFocusable(false);
+            } else if (c instanceof JRadioButton || c instanceof JCheckBox) {
+                ((JComponent) c).setOpaque(false);
+                c.setFocusable(false);
+            }
+            if (c instanceof Container) {
+                applyTheme((Container) c);
+            }
+        }
+    }
+}
@@ -0,0 +1,138 @@
+package haus.nightmare.j3270.ui;
+
+import javax.imageio.ImageIO;
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.io.InputStream;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ * Utility for loading and applying application window and taskbar icons.
+ * Loads multi-resolution lib3270j icons from resources.
+ */
+public final class AppIcon {
+
+    private static final Logger log = Logger.getLogger(AppIcon.class.getName());
+
+    private static final int[] ICON_SIZES = {16, 24, 32, 48, 64, 128, 256, 512};
+    private static List<Image> cachedIcons = null;
+    private static Image defaultIcon = null;
+
+    private AppIcon() {}
+
+    /**
+     * Retrieves the list of available application icon images in various resolutions.
+     *
+     * @return an unmodifiable list of Image objects, or empty list if none could be loaded.
+     */
+    public static synchronized List<Image> getAppIcons() {
+        if (cachedIcons == null) {
+            loadIcons();
+        }
+        return cachedIcons;
+    }
+
+    /**
+     * Retrieves the default application icon image (256x256 or best available).
+     *
+     * @return the default Image, or null if no icon is available.
+     */
+    public static synchronized Image getDefaultIcon() {
+        if (cachedIcons == null) {
+            loadIcons();
+        }
+        return defaultIcon;
+    }
+
+    /**
+     * Applies the application icons to a target Window (JFrame, JDialog, etc.)
+     * and updates the desktop Taskbar icon if supported.
+     *
+     * @param window the Window to set icon images for.
+     */
+    public static void applyTo(Window window) {
+        if (GraphicsEnvironment.isHeadless()) {
+            return;
+        }
+
+        List<Image> icons = getAppIcons();
+        if (icons.isEmpty()) {
+            return;
+        }
+
+        if (window != null) {
+            window.setIconImages(icons);
+        }
+
+        // Apply to OS Taskbar / Dock if supported (Java 9+)
+        try {
+            if (Taskbar.isTaskbarSupported()) {
+                Taskbar taskbar = Taskbar.getTaskbar();
+                if (taskbar.isSupported(Taskbar.Feature.ICON_IMAGE)) {
+                    Image bestIcon = defaultIcon != null ? defaultIcon : icons.get(icons.size() - 1);
+                    taskbar.setIconImage(bestIcon);
+                }
+            }
+        } catch (Throwable t) {
+            log.log(Level.FINE, "Taskbar icon could not be set: {0}", t.getMessage());
+        }
+    }
+
+    private static void loadIcons() {
+        List<Image> icons = new ArrayList<>();
+
+        for (int size : ICON_SIZES) {
+            String path = "/icons/lib3270j_" + size + ".png";
+            Image img = loadImage(path);
+            if (img != null) {
+                icons.add(img);
+            }
+        }
+
+        if (icons.isEmpty()) {
+            Image img = loadImage("/icons/lib3270j.png");
+            if (img != null) {
+                icons.add(img);
+            }
+        }
+
+        if (!icons.isEmpty()) {
+            for (Image img : icons) {
+                if (img.getWidth(null) == 256) {
+                    defaultIcon = img;
+                    break;
+                }
+            }
+            if (defaultIcon == null) {
+                defaultIcon = icons.get(icons.size() - 1);
+            }
+        }
+
+        cachedIcons = Collections.unmodifiableList(icons);
+    }
+
+    private static Image loadImage(String resourcePath) {
+        try {
+            URL url = AppIcon.class.getResource(resourcePath);
+            if (url != null) {
+                BufferedImage img = ImageIO.read(url);
+                if (img != null) {
+                    return img;
+                }
+            }
+            try (InputStream in = AppIcon.class.getResourceAsStream(resourcePath)) {
+                if (in != null) {
+                    return ImageIO.read(in);
+                }
+            }
+        } catch (Exception e) {
+            log.log(Level.FINE, "Failed to load icon from " + resourcePath, e);
+        }
+        return null;
+    }
+}
@@ -0,0 +1,88 @@
+package haus.nightmare.j3270.ui;
+
+import haus.nightmare.lib3270j.graphics.DefaultPixelBuffer;
+import haus.nightmare.lib3270j.graphics.PixelBuffer;
+
+import java.awt.Graphics2D;
+import java.awt.image.BufferedImage;
+import java.awt.image.DataBuffer;
+import java.awt.image.DataBufferInt;
+import java.awt.image.DirectColorModel;
+import java.awt.image.Raster;
+import java.awt.image.SinglePixelPackedSampleModel;
+import java.awt.image.WritableRaster;
+
+/**
+ * Desktop Swing/AWT bridge for converting between lib3270j PixelBuffer and java.awt BufferedImage.
+ */
+public final class AwtPixelBufferBridge {
+
+    private AwtPixelBufferBridge() {}
+
+    /**
+     * Converts a PixelBuffer to a BufferedImage.
+     * Uses TYPE_INT_ARGB with backed raster for optimal Java2D hardware acceleration.
+     */
+    public static BufferedImage toBufferedImage(PixelBuffer buffer) {
+        if (buffer == null) return null;
+        int w = buffer.getWidth();
+        int h = buffer.getHeight();
+        if (w <= 0 || h <= 0) {
+            return new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
+        }
+
+        BufferedImage img = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
+        copyIntoBufferedImage(buffer, img);
+        return img;
+    }
+
+    /**
+     * Copies pixels from a PixelBuffer directly into an existing BufferedImage.
+     */
+    public static void copyIntoBufferedImage(PixelBuffer buffer, BufferedImage target) {
+        if (buffer == null || target == null) return;
+        int w = Math.min(buffer.getWidth(), target.getWidth());
+        int h = Math.min(buffer.getHeight(), target.getHeight());
+        if (w <= 0 || h <= 0) return;
+
+        int[] srcPixels = buffer.getPixels();
+        if (srcPixels == null) return;
+
+        if (target.getType() == BufferedImage.TYPE_INT_ARGB || target.getType() == BufferedImage.TYPE_INT_RGB) {
+            if (target.getRaster().getDataBuffer() instanceof DataBufferInt) {
+                int[] dstPixels = ((DataBufferInt) target.getRaster().getDataBuffer()).getData();
+                int srcW = buffer.getWidth();
+                int dstW = target.getWidth();
+                if (srcW == dstW && srcW == w && srcPixels.length >= w * h && dstPixels.length >= w * h) {
+                    System.arraycopy(srcPixels, 0, dstPixels, 0, w * h);
+                    return;
+                }
+                for (int y = 0; y < h; y++) {
+                    System.arraycopy(srcPixels, y * srcW, dstPixels, y * dstW, w);
+                }
+                return;
+            }
+        }
+
+        // Fallback for custom or incompatible image formats
+        target.setRGB(0, 0, w, h, srcPixels, 0, buffer.getWidth());
+    }
+
+    /**
+     * Wraps or converts a java.awt BufferedImage into a PixelBuffer.
+     */
+    public static PixelBuffer toPixelBuffer(BufferedImage img) {
+        if (img == null) return null;
+        int w = img.getWidth();
+        int h = img.getHeight();
+        int[] pixels;
+        if ((img.getType() == BufferedImage.TYPE_INT_ARGB || img.getType() == BufferedImage.TYPE_INT_RGB)
+                && img.getRaster().getDataBuffer() instanceof DataBufferInt) {
+            pixels = ((DataBufferInt) img.getRaster().getDataBuffer()).getData();
+        } else {
+            pixels = new int[w * h];
+            img.getRGB(0, 0, w, h, pixels, 0, w);
+        }
+        return new DefaultPixelBuffer(w, h, pixels);
+    }
+}
@@ -0,0 +1,410 @@
+package haus.nightmare.j3270.ui;
+
+import haus.nightmare.lib3270j.ConnectionConfig;
+import haus.nightmare.lib3270j.TerminalModel;
+
+import javax.swing.*;
+import java.awt.*;
+
+/**
+ * Connection dialog for entering host, port, model, and LU name.
+ */
+public class ConnectDialog extends JDialog {
+
+    private JTextField hostField;
+    private JTextField portField;
+    private JComboBox<TerminalModel> modelCombo;
+    private JLabel dynamicDimLabel;
+    private JPanel dynamicDimPanel;
+    private JSpinner dynamicRowsSpinner;
+    private JSpinner dynamicColsSpinner;
+    private JComboBox<haus.nightmare.lib3270j.graphics.GraphicsMode> graphicsCombo;
+    private JComboBox<String> codePageCombo;
+    private JTextField luField;
+    private JCheckBox tlsCheckBox;
+    private JCheckBox verifyCertCheckBox;
+    private JCheckBox tn3270eCheckBox;
+    private JCheckBox keepAliveCheckBox;
+    private JCheckBox autoReconnectCheckBox;
+    private boolean confirmed;
+    private ConnectionConfig result;
+
+    public ConnectDialog(Frame parent) {
+        super(parent, "Connect to Host", true);
+        AppIcon.applyTo(this);
+        buildUI();
+        pack();
+        setLocationRelativeTo(parent);
+        setResizable(false);
+    }
+
+    private void buildUI() {
+        JPanel mainPanel = new JPanel(new GridBagLayout());
+        mainPanel.setBorder(BorderFactory.createEmptyBorder(16, 16, 16, 16));
+        GridBagConstraints gbc = new GridBagConstraints();
+        gbc.insets = new Insets(5, 6, 5, 6);
+        gbc.fill = GridBagConstraints.HORIZONTAL;
+
+        Font labelFont = ThemeManager.getUiFont();
+
+        // Host
+        gbc.gridx = 0;
+        gbc.gridy = 0;
+        JLabel hostLabel = new JLabel("Host:");
+        hostLabel.setFont(labelFont);
+        mainPanel.add(hostLabel, gbc);
+        gbc.gridx = 1;
+        gbc.weightx = 1.0;
+        hostField = createField(20);
+        mainPanel.add(hostField, gbc);
+
+        // Port
+        gbc.gridx = 0;
+        gbc.gridy = 1;
+        gbc.weightx = 0;
+        JLabel portLabel = new JLabel("Port:");
+        portLabel.setFont(labelFont);
+        mainPanel.add(portLabel, gbc);
+        gbc.gridx = 1;
+        gbc.weightx = 1.0;
+        portField = createField(6);
+        portField.setText("23");
+        mainPanel.add(portField, gbc);
+
+        // Model
+        gbc.gridx = 0;
+        gbc.gridy = 2;
+        gbc.weightx = 0;
+        JLabel modelLabel = new JLabel("Model:");
+        modelLabel.setFont(labelFont);
+        mainPanel.add(modelLabel, gbc);
+        gbc.gridx = 1;
+        gbc.weightx = 1.0;
+        modelCombo = new JComboBox<>(TerminalModel.values());
+        modelCombo.setSelectedItem(TerminalModel.IBM_3279_4);
+        modelCombo.setFont(ThemeManager.getMonospacedUiFont());
+        ThemeManager.styleComboBox(modelCombo);
+        mainPanel.add(modelCombo, gbc);
+
+        // Dynamic Dimensions (shown when IBM-DYNAMIC is selected)
+        gbc.gridx = 0;
+        gbc.gridy = 3;
+        gbc.weightx = 0;
+        dynamicDimLabel = new JLabel("Screen Size:");
+        dynamicDimLabel.setFont(labelFont);
+        mainPanel.add(dynamicDimLabel, gbc);
+
+        gbc.gridx = 1;
+        gbc.weightx = 1.0;
+        dynamicDimPanel = new JPanel(new FlowLayout(FlowLayout.LEFT, 6, 0));
+        dynamicDimPanel.setOpaque(false);
+
+        JLabel rowsLabel = new JLabel("Rows:");
+        rowsLabel.setFont(labelFont);
+        dynamicRowsSpinner = new JSpinner(new SpinnerNumberModel(haus.nightmare.j3270.config.Settings.getDynamicRows(), 24, 255, 1));
+        ThemeManager.styleSpinner(dynamicRowsSpinner);
+
+        JLabel colsLabel = new JLabel("Cols:");
+        colsLabel.setFont(labelFont);
+        dynamicColsSpinner = new JSpinner(new SpinnerNumberModel(haus.nightmare.j3270.config.Settings.getDynamicCols(), 80, 255, 1));
+        ThemeManager.styleSpinner(dynamicColsSpinner);
+
+        dynamicDimPanel.add(rowsLabel);
+        dynamicDimPanel.add(dynamicRowsSpinner);
+        dynamicDimPanel.add(colsLabel);
+        dynamicDimPanel.add(dynamicColsSpinner);
+        mainPanel.add(dynamicDimPanel, gbc);
+
+        Runnable updateDynamicVisibility = () -> {
+            TerminalModel m = (TerminalModel) modelCombo.getSelectedItem();
+            boolean isDyn = (m != null && m.isDynamic());
+            dynamicDimLabel.setVisible(isDyn);
+            dynamicDimPanel.setVisible(isDyn);
+            pack();
+        };
+        modelCombo.addActionListener(e -> updateDynamicVisibility.run());
+        updateDynamicVisibility.run();
+
+        // LU Name
+        gbc.gridx = 0;
+        gbc.gridy = 4;
+        gbc.weightx = 0;
+        JLabel luLabel = new JLabel("LU Name:");
+        luLabel.setFont(labelFont);
+        mainPanel.add(luLabel, gbc);
+        gbc.gridx = 1;
+        gbc.weightx = 1.0;
+        luField = createField(12);
+        mainPanel.add(luField, gbc);
+
+        // Graphics Mode
+        gbc.gridx = 0;
+        gbc.gridy = 5;
+        gbc.weightx = 0;
+        JLabel graphicsLabel = new JLabel("Graphics:");
+        graphicsLabel.setFont(labelFont);
+        mainPanel.add(graphicsLabel, gbc);
+        gbc.gridx = 1;
+        gbc.weightx = 1.0;
+        graphicsCombo = new JComboBox<>(haus.nightmare.lib3270j.graphics.GraphicsMode.values());
+        graphicsCombo.setSelectedItem(haus.nightmare.j3270.config.Settings.getGraphicsMode());
+        graphicsCombo.setFont(ThemeManager.getUiFont());
+        ThemeManager.styleComboBox(graphicsCombo);
+        mainPanel.add(graphicsCombo, gbc);
+
+        // Code Page
+        gbc.gridx = 0;
+        gbc.gridy = 6;
+        gbc.weightx = 0;
+        JLabel cpLabel = new JLabel("Code Page:");
+        cpLabel.setFont(labelFont);
+        mainPanel.add(cpLabel, gbc);
+        gbc.gridx = 1;
+        gbc.weightx = 1.0;
+        String[] commonCodePages = {
+            "037 - US / Canada / Brazil",
+            "1047 - IBM Open Systems / z/OS Unix",
+            "500 - International Latin-1",
+            "273 - Germany / Austria",
+            "277 - Denmark / Norway",
+            "278 - Sweden / Finland",
+            "280 - Italy",
+            "284 - Spain / Latin America",
+            "285 - United Kingdom",
+            "297 - France",
+            "870 - Eastern Europe / Latin-2",
+            "871 - Iceland",
+            "875 - Greece (Greek)",
+            "1026 - Turkey (Turkish Latin-5)",
+            "1155 - Turkey (Turkish Latin-5 Euro \u20AC)",
+            "905 - Turkey (Turkish Latin-3)",
+            "420 - Arabic Bilingual",
+            "424 - Hebrew (with Lowercase)",
+            "803 - Hebrew Old / Standard",
+            "838 - Thai",
+            "1160 - Thai (Euro \u20AC)",
+            "1025 - Cyrillic Multilingual",
+            "1123 - Cyrillic Ukraine",
+            "1154 - Cyrillic Multilingual (Euro \u20AC)",
+            "880 - Cyrillic Russian",
+            "1140 - US / Canada (Euro \u20AC)",
+            "1141 - Germany / Austria (Euro \u20AC)",
+            "1148 - International (Euro \u20AC)",
+            "930 - Japanese Katakana Mixed DBCS",
+            "939 - Japanese Latin Mixed DBCS",
+            "935 - Simplified Chinese Mixed DBCS",
+            "1388 - Simplified Chinese Extended Mixed DBCS",
+            "937 - Traditional Chinese Mixed DBCS",
+            "1371 - Traditional Chinese Extended Mixed DBCS",
+            "933 - Korean Mixed DBCS"
+        };
+        codePageCombo = new JComboBox<>(commonCodePages);
+        codePageCombo.setEditable(true);
+        String currentCp = haus.nightmare.j3270.config.Settings.getCodePage();
+        for (String item : commonCodePages) {
+            if (item.startsWith(currentCp + " ") || item.equals(currentCp)) {
+                codePageCombo.setSelectedItem(item);
+                break;
+            }
+        }
+        codePageCombo.setFont(ThemeManager.getUiFont());
+        ThemeManager.styleComboBox(codePageCombo);
+        mainPanel.add(codePageCombo, gbc);
+
+        // TLS / SSL Checkbox
+        gbc.gridx = 1;
+        gbc.gridy = 7;
+        gbc.weightx = 1.0;
+        tlsCheckBox = new JCheckBox("Enable TLS/SSL");
+        ThemeManager.styleCheckBox(tlsCheckBox);
+        tlsCheckBox.setFont(labelFont);
+        tlsCheckBox.addActionListener(e -> {
+            boolean isTls = tlsCheckBox.isSelected();
+            verifyCertCheckBox.setEnabled(isTls);
+            String currentPort = portField.getText().trim();
+            if (isTls && "23".equals(currentPort)) {
+                portField.setText("992");
+            } else if (!isTls && "992".equals(currentPort)) {
+                portField.setText("23");
+            }
+        });
+        mainPanel.add(tlsCheckBox, gbc);
+
+        // Verify Certificate Checkbox
+        gbc.gridx = 1;
+        gbc.gridy = 8;
+        verifyCertCheckBox = new JCheckBox("Verify Server Certificate");
+        ThemeManager.styleCheckBox(verifyCertCheckBox);
+        verifyCertCheckBox.setFont(ThemeManager.getUiFont());
+        verifyCertCheckBox.setSelected(true);
+        verifyCertCheckBox.setEnabled(false);
+        mainPanel.add(verifyCertCheckBox, gbc);
+
+        // TN3270E Checkbox
+        gbc.gridx = 1;
+        gbc.gridy = 9;
+        tn3270eCheckBox = new JCheckBox("Enable TN3270E (Extended 3270)");
+        ThemeManager.styleCheckBox(tn3270eCheckBox);
+        tn3270eCheckBox.setFont(ThemeManager.getUiFont());
+        tn3270eCheckBox.setSelected(haus.nightmare.j3270.config.Settings.getAutoConnectTn3270e());
+        mainPanel.add(tn3270eCheckBox, gbc);
+
+        // Keep-Alive Checkbox
+        gbc.gridx = 1;
+        gbc.gridy = 10;
+        keepAliveCheckBox = new JCheckBox("Enable Keep-Alive Heartbeat (NOP)");
+        ThemeManager.styleCheckBox(keepAliveCheckBox);
+        keepAliveCheckBox.setFont(ThemeManager.getUiFont());
+        keepAliveCheckBox.setSelected(haus.nightmare.j3270.config.Settings.getAutoConnectKeepAlive());
+        mainPanel.add(keepAliveCheckBox, gbc);
+
+        // Auto-Reconnect Checkbox
+        gbc.gridx = 1;
+        gbc.gridy = 11;
+        autoReconnectCheckBox = new JCheckBox("Auto-Reconnect on Disconnect");
+        ThemeManager.styleCheckBox(autoReconnectCheckBox);
+        autoReconnectCheckBox.setFont(ThemeManager.getUiFont());
+        autoReconnectCheckBox.setSelected(haus.nightmare.j3270.config.Settings.getAutoConnectAutoReconnect());
+        mainPanel.add(autoReconnectCheckBox, gbc);
+
+        // Buttons
+        JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT, 8, 4));
+
+        JButton connectBtn = new JButton("Connect");
+        ThemeManager.styleButton(connectBtn, ThemeManager.ButtonVariant.PRIMARY);
+        connectBtn.setFont(labelFont);
+        connectBtn.addActionListener(e -> onConnect());
+
+        JButton cancelBtn = new JButton("Cancel");
+        ThemeManager.styleButton(cancelBtn, ThemeManager.ButtonVariant.CANCEL);
+        cancelBtn.setFont(labelFont);
+        cancelBtn.addActionListener(e -> {
+            confirmed = false;
+            dispose();
+        });
+
+        buttonPanel.add(cancelBtn);
+        buttonPanel.add(connectBtn);
+
+        gbc.gridx = 0;
+        gbc.gridy = 12;
+        gbc.gridwidth = 2;
+        mainPanel.add(buttonPanel, gbc);
+
+        setContentPane(mainPanel);
+        ThemeManager.applyThemeToWindow(this);
+
+        // Enter key triggers connect
+        getRootPane().setDefaultButton(connectBtn);
+    }
+
+    private JTextField createField(int cols) {
+        JTextField field = new JTextField(cols);
+        field.setFont(ThemeManager.getMonospacedUiFont());
+        ThemeManager.styleTextField(field);
+        return field;
+    }
+
+    private void onConnect() {
+        String host = hostField.getText().trim();
+        if (host.isEmpty()) {
+            hostField.requestFocus();
+            return;
+        }
+
+        int port;
+        try {
+            port = Integer.parseInt(portField.getText().trim());
+        } catch (NumberFormatException e) {
+            portField.requestFocus();
+            return;
+        }
+
+        TerminalModel selectedModel = (TerminalModel) modelCombo.getSelectedItem();
+        result = new ConnectionConfig(host, port, selectedModel);
+        if (selectedModel != null && selectedModel.isDynamic()) {
+            int dRows = (Integer) dynamicRowsSpinner.getValue();
+            int dCols = (Integer) dynamicColsSpinner.getValue();
+            result.setDynamicDimensions(dRows, dCols);
+            haus.nightmare.j3270.config.Settings.setDynamicRows(dRows);
+            haus.nightmare.j3270.config.Settings.setDynamicCols(dCols);
+        }
+        String lu = luField.getText().trim();
+        if (!lu.isEmpty()) {
+            result.setLuName(lu);
+        }
+        result.setGraphicsMode((haus.nightmare.lib3270j.graphics.GraphicsMode) graphicsCombo.getSelectedItem());
+        
+        Object cpSelection = codePageCombo.getSelectedItem();
+        if (cpSelection != null) {
+            String cpStr = cpSelection.toString().trim();
+            int dash = cpStr.indexOf(" -");
+            if (dash > 0) {
+                cpStr = cpStr.substring(0, dash).trim();
+            }
+            result.setCodePage(cpStr);
+            haus.nightmare.j3270.config.Settings.setCodePage(cpStr);
+        }
+
+        result.setUseTls(tlsCheckBox.isSelected());
+        result.setTlsVerifyCert(verifyCertCheckBox.isSelected());
+        result.setTn3270eEnabled(tn3270eCheckBox.isSelected());
+        result.setAutoSysUnlock(haus.nightmare.j3270.config.Settings.getAutoSysUnlock());
+
+        boolean ka = keepAliveCheckBox.isSelected();
+        result.setKeepAliveEnabled(ka);
+        result.setKeepAliveIntervalSeconds(haus.nightmare.j3270.config.Settings.getAutoConnectKeepAliveInterval());
+        haus.nightmare.j3270.config.Settings.setAutoConnectKeepAlive(ka);
+
+        boolean ar = autoReconnectCheckBox.isSelected();
+        result.setAutoReconnect(ar);
+        result.setReconnectMaxRetries(haus.nightmare.j3270.config.Settings.getAutoConnectReconnectMaxRetries());
+        haus.nightmare.j3270.config.Settings.setAutoConnectAutoReconnect(ar);
+
+        confirmed = true;
+        dispose();
+    }
+
+    public boolean isConfirmed() {
+        return confirmed;
+    }
+
+    public ConnectionConfig getConnectionConfig() {
+        return result;
+    }
+
+    /** Set initial values. */
+    public void setInitialHost(String host) {
+        hostField.setText(host);
+    }
+
+    public void setInitialPort(int port) {
+        portField.setText(String.valueOf(port));
+    }
+
+    public void setInitialTls(boolean tls) {
+        tlsCheckBox.setSelected(tls);
+        verifyCertCheckBox.setEnabled(tls);
+    }
+
+    public void setInitialVerifyCert(boolean verify) {
+        verifyCertCheckBox.setSelected(verify);
+    }
+
+    public void setInitialTn3270e(boolean tn3270e) {
+        tn3270eCheckBox.setSelected(tn3270e);
+    }
+
+    public void setInitialCodePage(String cp) {
+        if (cp != null && codePageCombo != null) {
+            for (int i = 0; i < codePageCombo.getItemCount(); i++) {
+                String item = codePageCombo.getItemAt(i);
+                if (item.startsWith(cp + " ") || item.equals(cp)) {
+                    codePageCombo.setSelectedIndex(i);
+                    return;
+                }
+            }
+            codePageCombo.setSelectedItem(cp);
+        }
+    }
+}
@@ -0,0 +1,217 @@
+package haus.nightmare.j3270.ui;
+
+import haus.nightmare.lib3270j.Telnet3270Client;
+import haus.nightmare.lib3270j.ecl.ECLField;
+import haus.nightmare.lib3270j.ecl.ECLFieldList;
+import haus.nightmare.lib3270j.listener.ScreenUpdateListener;
+
+import javax.swing.*;
+import javax.swing.border.EmptyBorder;
+import javax.swing.border.LineBorder;
+import javax.swing.table.DefaultTableCellRenderer;
+import javax.swing.table.DefaultTableModel;
+import javax.swing.table.JTableHeader;
+import java.awt.*;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+import java.util.List;
+
+/**
+ * Live Field Inspector dialog displaying all fields in the 3270 Presentation Space (ECLFieldList).
+ */
+public class FieldInspectorDialog extends JDialog implements ScreenUpdateListener {
+
+    private final Telnet3270Client client;
+    private final TerminalPanel terminalPanel;
+
+    private DefaultTableModel tableModel;
+    private JTable table;
+    private JLabel countLabel;
+
+    public FieldInspectorDialog(Frame parent, Telnet3270Client client, TerminalPanel terminalPanel) {
+        super(parent, "3270 Presentation Space Field Inspector", false);
+        this.client = client;
+        this.terminalPanel = terminalPanel;
+        AppIcon.applyTo(this);
+
+        buildUI();
+        setSize(850, 420);
+        setLocationRelativeTo(parent);
+
+        if (client != null) {
+            client.addScreenUpdateListener(this);
+            refreshFields();
+        }
+
+        addWindowListener(new WindowAdapter() {
+            @Override
+            public void windowClosing(WindowEvent e) {
+                if (client != null) {
+                    // Screen update listener removed on close
+                }
+            }
+        });
+    }
+
+    private void buildUI() {
+        JPanel mainPanel = new JPanel(new BorderLayout(8, 8));
+        mainPanel.setBorder(new EmptyBorder(10, 10, 10, 10));
+
+        // Top info bar
+        JPanel topPanel = new JPanel(new BorderLayout());
+        topPanel.setOpaque(false);
+        countLabel = new JLabel("0 fields detected on screen");
+        countLabel.setFont(ThemeManager.getUiFont(Font.BOLD, 0));
+        topPanel.add(countLabel, BorderLayout.WEST);
+
+        JButton refreshBtn = new JButton("Refresh");
+        ThemeManager.styleButton(refreshBtn, ThemeManager.ButtonVariant.DEFAULT);
+        refreshBtn.addActionListener(e -> refreshFields());
+        topPanel.add(refreshBtn, BorderLayout.EAST);
+        mainPanel.add(topPanel, BorderLayout.NORTH);
+
+        // Table
+        String[] columns = {
+            "#", "Pos", "Start", "End", "Len", "Prot", "MDT", "Num", "Hi-Int", "Hidden", "Pen-Sel", "Content Text"
+        };
+
+        tableModel = new DefaultTableModel(columns, 0) {
+            @Override
+            public boolean isCellEditable(int row, int column) {
+                return false;
+            }
+        };
+
+        table = new JTable(tableModel);
+        ThemeManager.styleTable(table);
+        table.setFont(ThemeManager.getMonospacedUiFont());
+        table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
+        table.setRowHeight(Math.max(22, ThemeManager.getMonospacedUiFont().getSize() + 8));
+
+        JTableHeader header = table.getTableHeader();
+        header.setFont(ThemeManager.getUiFont(Font.BOLD, 0));
+
+        // Column widths
+        int[] widths = {35, 45, 60, 60, 40, 45, 45, 45, 50, 55, 60, 260};
+        for (int i = 0; i < widths.length && i < table.getColumnCount(); i++) {
+            table.getColumnModel().getColumn(i).setPreferredWidth(widths[i]);
+        }
+
+        // Center align boolean columns
+        DefaultTableCellRenderer centerRenderer = new DefaultTableCellRenderer();
+        centerRenderer.setHorizontalAlignment(SwingConstants.CENTER);
+        for (int i = 5; i <= 10; i++) {
+            table.getColumnModel().getColumn(i).setCellRenderer(centerRenderer);
+        }
+
+        table.getSelectionModel().addListSelectionListener(e -> {
+            if (!e.getValueIsAdjusting() && table.getSelectedRow() >= 0) {
+                selectFieldOnTerminal(table.getSelectedRow());
+            }
+        });
+
+        JScrollPane scrollPane = new JScrollPane(table);
+        ThemeManager.styleScrollPane(scrollPane);
+        mainPanel.add(scrollPane, BorderLayout.CENTER);
+
+        // Bottom panel
+        JPanel bottomPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT, 6, 0));
+        bottomPanel.setOpaque(false);
+
+        JButton jumpBtn = new JButton("Jump to Selected Field");
+        ThemeManager.styleButton(jumpBtn, ThemeManager.ButtonVariant.PRIMARY);
+        jumpBtn.addActionListener(e -> {
+            int row = table.getSelectedRow();
+            if (row >= 0) {
+                selectFieldOnTerminal(row);
+            }
+        });
+
+        JButton closeBtn = new JButton("Close");
+        ThemeManager.styleButton(closeBtn, ThemeManager.ButtonVariant.CANCEL);
+        closeBtn.addActionListener(e -> dispose());
+
+        bottomPanel.add(jumpBtn);
+        bottomPanel.add(closeBtn);
+        mainPanel.add(bottomPanel, BorderLayout.SOUTH);
+
+        setContentPane(mainPanel);
+        ThemeManager.applyThemeToWindow(this);
+    }
+
+    public synchronized void refreshFields() {
+        if (client == null || !client.getConnectionState().isFullSession()) {
+            tableModel.setRowCount(0);
+            countLabel.setText("Not connected or screen unformatted");
+            return;
+        }
+
+        ECLFieldList fieldList = client.getFieldList();
+        List<ECLField> fields = fieldList.getFields();
+
+        int selectedRow = table.getSelectedRow();
+        tableModel.setRowCount(0);
+
+        int cols = client.getScreenBuffer().getDisplayCols();
+        for (int i = 0; i < fields.size(); i++) {
+            ECLField f = fields.get(i);
+            int startRow = f.getStartRow() + 1;
+            int startCol = f.getStartCol() + 1;
+            int endRow = f.getEndRow() + 1;
+            int endCol = f.getEndCol() + 1;
+
+            String text = f.getText();
+            if (f.isHidden()) {
+                text = "••••••••";
+            }
+
+            tableModel.addRow(new Object[]{
+                (i + 1),
+                f.getStart(),
+                String.format("%02d/%02d", startRow, startCol),
+                String.format("%02d/%02d", endRow, endCol),
+                f.getLength(),
+                f.isProtected() ? "YES" : "-",
+                f.isModified() ? "YES" : "-",
+                f.isNumeric() ? "YES" : "-",
+                f.isHighIntensity() ? "YES" : "-",
+                f.isHidden() ? "YES" : "-",
+                f.isPenSelectable() ? "YES" : "-",
+                text
+            });
+        }
+
+        countLabel.setText(fields.size() + " fields detected on screen (" + client.getScreenBuffer().getDisplayRows() + "x" + cols + ")");
+        if (selectedRow >= 0 && selectedRow < tableModel.getRowCount()) {
+            table.setRowSelectionInterval(selectedRow, selectedRow);
+        }
+    }
+
+    private void selectFieldOnTerminal(int rowIndex) {
+        if (client == null || rowIndex < 0) return;
+        List<ECLField> fields = client.getFieldList().getFields();
+        if (rowIndex < fields.size()) {
+            ECLField f = fields.get(rowIndex);
+            client.getScreenBuffer().setCursorAddress(f.getDataStart());
+            if (terminalPanel != null) {
+                terminalPanel.setSelectionRange(f.getDataStart(), f.getEnd());
+                terminalPanel.repaint();
+            }
+        }
+    }
+
+    // ========== ScreenUpdateListener ==========
+
+    @Override
+    public void onScreenUpdated() {
+        SwingUtilities.invokeLater(this::refreshFields);
+    }
+
+    @Override
+    public void onScreenSizeChanged(int rows, int cols) {
+        SwingUtilities.invokeLater(this::refreshFields);
+    }
+
+    @Override
+    public void onSoundAlarm() {}
+}
@@ -0,0 +1,219 @@
+package haus.nightmare.j3270.ui;
+
+import haus.nightmare.lib3270j.Telnet3270Client;
+import haus.nightmare.lib3270j.ecl.ECLConstants;
+import haus.nightmare.lib3270j.screen.ScreenBuffer;
+
+import javax.swing.*;
+import javax.swing.border.EmptyBorder;
+import java.awt.*;
+import java.awt.event.KeyAdapter;
+import java.awt.event.KeyEvent;
+
+/**
+ * Find dialog for searching text in the 3270 Presentation Space using ECLPS.
+ */
+public class FindDialog extends JDialog {
+
+    private final Telnet3270Client client;
+    private final TerminalPanel terminalPanel;
+
+    private JTextField searchField;
+    private JCheckBox matchCaseCheck;
+    private JRadioButton forwardRadio;
+    private JRadioButton backwardRadio;
+    private JLabel statusLabel;
+
+    private static String lastSearchText = "";
+    private static boolean lastMatchCase = false;
+    private static boolean lastForward = true;
+
+    public FindDialog(Frame parent, Telnet3270Client client, TerminalPanel terminalPanel) {
+        super(parent, "Find on Screen", false);
+        this.client = client;
+        this.terminalPanel = terminalPanel;
+        AppIcon.applyTo(this);
+
+        buildUI();
+        pack();
+        setLocationRelativeTo(parent);
+        setResizable(false);
+    }
+
+    private void buildUI() {
+        JPanel mainPanel = new JPanel(new BorderLayout(10, 10));
+        mainPanel.setBorder(new EmptyBorder(12, 14, 12, 14));
+
+        // Form
+        JPanel formPanel = new JPanel(new GridBagLayout());
+        formPanel.setOpaque(false);
+        GridBagConstraints gbc = new GridBagConstraints();
+        gbc.insets = new Insets(4, 4, 4, 4);
+        gbc.fill = GridBagConstraints.HORIZONTAL;
+
+        Font labelFont = ThemeManager.getUiFont();
+
+        // Search text
+        gbc.gridx = 0;
+        gbc.gridy = 0;
+        JLabel findLabel = new JLabel("Find what:");
+        findLabel.setFont(labelFont);
+        formPanel.add(findLabel, gbc);
+
+        gbc.gridx = 1;
+        gbc.weightx = 1.0;
+        searchField = new JTextField(20);
+        searchField.setText(lastSearchText);
+        searchField.setFont(ThemeManager.getMonospacedUiFont());
+        ThemeManager.styleTextField(searchField);
+        formPanel.add(searchField, gbc);
+
+        // Options
+        gbc.gridx = 1;
+        gbc.gridy = 1;
+        matchCaseCheck = new JCheckBox("Match case", lastMatchCase);
+        ThemeManager.styleCheckBox(matchCaseCheck);
+        matchCaseCheck.setFont(labelFont);
+        formPanel.add(matchCaseCheck, gbc);
+
+        // Direction
+        gbc.gridx = 1;
+        gbc.gridy = 2;
+        JPanel dirPanel = new JPanel(new FlowLayout(FlowLayout.LEFT, 0, 0));
+        dirPanel.setOpaque(false);
+        JLabel dirLabel = new JLabel("Direction: ");
+        dirLabel.setFont(labelFont);
+        forwardRadio = new JRadioButton("Down", lastForward);
+        backwardRadio = new JRadioButton("Up", !lastForward);
+        ThemeManager.styleRadioButton(forwardRadio);
+        ThemeManager.styleRadioButton(backwardRadio);
+
+        ButtonGroup bg = new ButtonGroup();
+        bg.add(forwardRadio);
+        bg.add(backwardRadio);
+        dirPanel.add(dirLabel);
+        dirPanel.add(forwardRadio);
+        dirPanel.add(Box.createHorizontalStrut(10));
+        dirPanel.add(backwardRadio);
+        formPanel.add(dirPanel, gbc);
+
+        // Status
+        gbc.gridx = 0;
+        gbc.gridy = 3;
+        gbc.gridwidth = 2;
+        statusLabel = new JLabel(" ");
+        statusLabel.setForeground(ThemeManager.getOiaFgAlert());
+        statusLabel.setFont(labelFont);
+        formPanel.add(statusLabel, gbc);
+
+        mainPanel.add(formPanel, BorderLayout.CENTER);
+
+        // Buttons
+        JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT, 6, 0));
+        buttonPanel.setOpaque(false);
+
+        JButton findNextBtn = new JButton("Find Next");
+        ThemeManager.styleButton(findNextBtn, ThemeManager.ButtonVariant.PRIMARY);
+        findNextBtn.setFont(labelFont);
+        findNextBtn.addActionListener(e -> findNext());
+
+        JButton closeBtn = new JButton("Close");
+        ThemeManager.styleButton(closeBtn, ThemeManager.ButtonVariant.CANCEL);
+        closeBtn.setFont(labelFont);
+        closeBtn.addActionListener(e -> dispose());
+
+        buttonPanel.add(findNextBtn);
+        buttonPanel.add(closeBtn);
+
+        mainPanel.add(buttonPanel, BorderLayout.SOUTH);
+
+        setContentPane(mainPanel);
+        ThemeManager.applyThemeToWindow(this);
+        getRootPane().setDefaultButton(findNextBtn);
+
+        searchField.addKeyListener(new KeyAdapter() {
+            @Override
+            public void keyPressed(KeyEvent e) {
+                if (e.getKeyCode() == KeyEvent.VK_ENTER) {
+                    findNext();
+                } else if (e.getKeyCode() == KeyEvent.VK_ESCAPE) {
+                    dispose();
+                }
+            }
+        });
+    }
+
+    public void findNext() {
+        find(forwardRadio.isSelected());
+    }
+
+    public void findPrevious() {
+        find(!forwardRadio.isSelected());
+    }
+
+    private void find(boolean forward) {
+        String target = searchField.getText();
+        if (target == null || target.isEmpty()) {
+            statusLabel.setText("Please enter search text.");
+            return;
+        }
+
+        if (client == null || !client.getConnectionState().isFullSession()) {
+            statusLabel.setText("Terminal is not connected.");
+            return;
+        }
+
+        lastSearchText = target;
+        lastMatchCase = matchCaseCheck.isSelected();
+        lastForward = forwardRadio.isSelected();
+
+        ScreenBuffer sb = client.getScreenBuffer();
+        int curAddr = sb.getCursorAddress();
+        int cols = sb.getDisplayCols();
+        int curRow = curAddr / cols;
+        int curCol = curAddr % cols;
+
+        // Offset search start position past current character so repeat search moves to next occurrence
+        int startRow = curRow;
+        int startCol = curCol;
+        if (forward) {
+            startCol = (curCol + 1) % cols;
+            if (startCol == 0) startRow = (curRow + 1) % sb.getDisplayRows();
+        } else {
+            startCol = (curCol - 1 + cols) % cols;
+            if (startCol == cols - 1) startRow = (curRow - 1 + sb.getDisplayRows()) % sb.getDisplayRows();
+        }
+
+        int dir = forward ? ECLConstants.SEARCH_FORWARD : ECLConstants.SEARCH_BACKWARD;
+        int foundPos = client.getPS().searchString(target, startRow, startCol, dir, !matchCaseCheck.isSelected());
+
+        if (foundPos >= 0) {
+            statusLabel.setText("Found at position " + (foundPos + 1) + " (" + (foundPos / cols + 1) + "/" + (foundPos % cols + 1) + ")");
+            statusLabel.setForeground(new Color(100, 255, 100));
+            sb.setCursorAddress(foundPos);
+            if (terminalPanel != null) {
+                terminalPanel.setSearchHighlight(foundPos, target.length());
+                terminalPanel.repaint();
+            }
+        } else {
+            statusLabel.setText("Text not found: \"" + target + "\"");
+            statusLabel.setForeground(new Color(255, 120, 120));
+            if (terminalPanel != null) {
+                terminalPanel.clearSearchHighlight();
+                terminalPanel.repaint();
+            }
+        }
+    }
+
+    public static String getLastSearchText() {
+        return lastSearchText;
+    }
+
+    public static boolean getLastMatchCase() {
+        return lastMatchCase;
+    }
+
+    public static boolean getLastForward() {
+        return lastForward;
+    }
+}
@@ -0,0 +1,270 @@
+package haus.nightmare.j3270.ui;
+
+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;
+
+import javax.swing.*;
+import javax.swing.border.EmptyBorder;
+import javax.swing.border.LineBorder;
+import javax.swing.table.DefaultTableModel;
+import javax.swing.table.JTableHeader;
+import java.awt.*;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Host Directory and Dataset Catalog browser dialog for TSO and VM/CMS environments.
+ */
+public class HostDirectoryDialog extends JDialog {
+
+    private final Telnet3270Client client;
+    private final FTConfig.HostType initialHostType;
+
+    private JComboBox<FTConfig.HostType> hostTypeCombo;
+    private JTextField queryField;
+    private JTable table;
+    private DefaultTableModel tableModel;
+    private JLabel statusLabel;
+
+    private String selectedHostFile = null;
+    private boolean confirmed = false;
+
+    private final List<HostDirectoryEntry> currentEntries = new ArrayList<>();
+
+    public HostDirectoryDialog(Dialog parent, Telnet3270Client client, FTConfig.HostType hostType, String initialQuery) {
+        super(parent, "Host Catalog & Directory Browser", true);
+        this.client = client;
+        this.initialHostType = hostType;
+        AppIcon.applyTo(this);
+
+        buildUI(initialQuery);
+        setSize(700, 420);
+        setLocationRelativeTo(parent);
+    }
+
+    private void buildUI(String initialQuery) {
+        JPanel mainPanel = new JPanel(new BorderLayout(10, 10));
+        mainPanel.setBorder(new EmptyBorder(12, 12, 12, 12));
+
+        Font font = ThemeManager.getUiFont();
+
+        // Top Query bar
+        JPanel topPanel = new JPanel(new GridBagLayout());
+        topPanel.setOpaque(false);
+        GridBagConstraints gbc = new GridBagConstraints();
+        gbc.insets = new Insets(3, 4, 3, 4);
+        gbc.fill = GridBagConstraints.HORIZONTAL;
+
+        JLabel envLabel = new JLabel("System:");
+        envLabel.setFont(font);
+        topPanel.add(envLabel, gbc);
+
+        gbc.gridx = 1;
+        hostTypeCombo = new JComboBox<>(new FTConfig.HostType[]{FTConfig.HostType.TSO, FTConfig.HostType.CMS});
+        if (initialHostType == FTConfig.HostType.CMS) hostTypeCombo.setSelectedItem(FTConfig.HostType.CMS);
+        else hostTypeCombo.setSelectedItem(FTConfig.HostType.TSO);
+        ThemeManager.styleComboBox(hostTypeCombo);
+        topPanel.add(hostTypeCombo, gbc);
+
+        gbc.gridx = 2;
+        JLabel queryLabel = new JLabel("Query Pattern / Text:");
+        queryLabel.setFont(font);
+        topPanel.add(queryLabel, gbc);
+
+        gbc.gridx = 3;
+        gbc.weightx = 1.0;
+        queryField = new JTextField(initialQuery != null ? initialQuery : "", 16);
+        queryField.setFont(ThemeManager.getMonospacedUiFont());
+        ThemeManager.styleTextField(queryField);
+        topPanel.add(queryField, gbc);
+
+        gbc.gridx = 4;
+        gbc.weightx = 0;
+        JButton parseBtn = new JButton("Query / Parse");
+        ThemeManager.styleButton(parseBtn, ThemeManager.ButtonVariant.DEFAULT);
+        parseBtn.setFont(font);
+        parseBtn.addActionListener(e -> runQuery());
+        topPanel.add(parseBtn, gbc);
+
+        mainPanel.add(topPanel, BorderLayout.NORTH);
+
+        // Table
+        tableModel = new DefaultTableModel();
+        table = new JTable(tableModel);
+        ThemeManager.styleTable(table);
+        table.setFont(ThemeManager.getMonospacedUiFont());
+        table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
+        table.setRowHeight(Math.max(22, ThemeManager.getMonospacedUiFont().getSize() + 8));
+
+        JTableHeader header = table.getTableHeader();
+        header.setFont(ThemeManager.getUiFont(Font.BOLD, 0));
+
+        table.addMouseListener(new MouseAdapter() {
+            @Override
+            public void mouseClicked(MouseEvent e) {
+                if (e.getClickCount() == 2 && table.getSelectedRow() >= 0) {
+                    onConfirmSelection();
+                }
+            }
+        });
+
+        JScrollPane scrollPane = new JScrollPane(table);
+        ThemeManager.styleScrollPane(scrollPane);
+        mainPanel.add(scrollPane, BorderLayout.CENTER);
+
+        // Bottom
+        JPanel bottomPanel = new JPanel(new BorderLayout(5, 5));
+        bottomPanel.setOpaque(false);
+
+        statusLabel = new JLabel("Enter a dataset pattern or parse active screen.");
+        statusLabel.setForeground(ThemeManager.getFgMuted());
+        statusLabel.setFont(font);
+        bottomPanel.add(statusLabel, BorderLayout.WEST);
+
+        JPanel btnPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT, 6, 0));
+        btnPanel.setOpaque(false);
+
+        JButton pasteScreenBtn = new JButton("Parse Current Screen");
+        ThemeManager.styleButton(pasteScreenBtn, ThemeManager.ButtonVariant.DEFAULT);
+        pasteScreenBtn.setFont(font);
+        pasteScreenBtn.addActionListener(e -> parseCurrentScreen());
+
+        JButton selectBtn = new JButton("Select Dataset");
+        ThemeManager.styleButton(selectBtn, ThemeManager.ButtonVariant.PRIMARY);
+        selectBtn.setFont(font);
+        selectBtn.addActionListener(e -> onConfirmSelection());
+
+        JButton cancelBtn = new JButton("Cancel");
+        ThemeManager.styleButton(cancelBtn, ThemeManager.ButtonVariant.CANCEL);
+        cancelBtn.setFont(font);
+        cancelBtn.addActionListener(e -> {
+            confirmed = false;
+            dispose();
+        });
+
+        btnPanel.add(pasteScreenBtn);
+        btnPanel.add(Box.createHorizontalStrut(10));
+        btnPanel.add(selectBtn);
+        btnPanel.add(cancelBtn);
+
+        bottomPanel.add(btnPanel, BorderLayout.EAST);
+        mainPanel.add(bottomPanel, BorderLayout.SOUTH);
+
+        setContentPane(mainPanel);
+        ThemeManager.applyThemeToWindow(this);
+
+        // Initial setup
+        setupTableColumns();
+        if (initialQuery != null && !initialQuery.isEmpty()) {
+            runQuery();
+        } else {
+            parseCurrentScreen();
+        }
+    }
+
+    private void setupTableColumns() {
+        FTConfig.HostType hostType = (FTConfig.HostType) hostTypeCombo.getSelectedItem();
+        tableModel.setRowCount(0);
+        if (hostType == FTConfig.HostType.CMS) {
+            tableModel.setColumnIdentifiers(new Object[]{
+                "Filename", "Filetype", "Filemode", "Format", "Lrecl", "Records", "Date / Time"
+            });
+        } else {
+            tableModel.setColumnIdentifiers(new Object[]{
+                "Dataset Name", "Volume", "Recfm", "Lrecl", "Blksize", "Tracks", "Extents"
+            });
+        }
+    }
+
+    private void runQuery() {
+        setupTableColumns();
+        currentEntries.clear();
+        String query = queryField.getText().trim();
+        FTConfig.HostType hostType = (FTConfig.HostType) hostTypeCombo.getSelectedItem();
+
+        if (client != null && client.getXfer() != null) {
+            if (hostType == FTConfig.HostType.CMS) {
+                List<CMSDirectoryEntry> cmsEntries = client.getXfer().getCmsDirectory(query);
+                currentEntries.addAll(cmsEntries);
+                for (CMSDirectoryEntry entry : cmsEntries) {
+                    tableModel.addRow(new Object[]{
+                        entry.getFilename(), entry.getFiletype(), entry.getFilemode(),
+                        entry.getRecfm(), entry.getLrecl(), entry.getNumRecords(), entry.getDate() + " " + entry.getTime()
+                    });
+                }
+            } else {
+                List<TSODirectoryEntry> tsoEntries = client.getXfer().getTsoDirectory(query);
+                currentEntries.addAll(tsoEntries);
+                for (TSODirectoryEntry entry : tsoEntries) {
+                    tableModel.addRow(new Object[]{
+                        entry.getDatasetName(), entry.getVolume(), entry.getRecfm(),
+                        entry.getLrecl(), entry.getBlksize(), entry.getTracksAllocated(), entry.getExtents()
+                    });
+                }
+            }
+        }
+
+        statusLabel.setText(currentEntries.size() + " entries found.");
+    }
+
+    private void parseCurrentScreen() {
+        if (client == null || !client.getConnectionState().isFullSession()) {
+            statusLabel.setText("No active session to parse.");
+            return;
+        }
+
+        setupTableColumns();
+        currentEntries.clear();
+        FTConfig.HostType hostType = (FTConfig.HostType) hostTypeCombo.getSelectedItem();
+        String screenText = client.getPS().getString(0, client.getPS().getSize());
+
+        if (hostType == FTConfig.HostType.CMS) {
+            List<CMSDirectoryEntry> cmsEntries = client.getXfer().getCmsDirectory(screenText);
+            currentEntries.addAll(cmsEntries);
+            for (CMSDirectoryEntry entry : cmsEntries) {
+                tableModel.addRow(new Object[]{
+                    entry.getFilename(), entry.getFiletype(), entry.getFilemode(),
+                    entry.getRecfm(), entry.getLrecl(), entry.getNumRecords(), entry.getDate() + " " + entry.getTime()
+                });
+            }
+        } else {
+            List<TSODirectoryEntry> tsoEntries = client.getXfer().getTsoDirectory(screenText);
+            currentEntries.addAll(tsoEntries);
+            for (TSODirectoryEntry entry : tsoEntries) {
+                tableModel.addRow(new Object[]{
+                    entry.getDatasetName(), entry.getVolume(), entry.getRecfm(),
+                    entry.getLrecl(), entry.getBlksize(), entry.getTracksAllocated(), entry.getExtents()
+                });
+            }
+        }
+
+        statusLabel.setText("Parsed " + currentEntries.size() + " entries from presentation space.");
+    }
+
+    private void onConfirmSelection() {
+        int row = table.getSelectedRow();
+        if (row < 0 || row >= currentEntries.size()) {
+            JOptionPane.showMessageDialog(this, "Please select an entry from the table.",
+                    "No Selection", JOptionPane.WARNING_MESSAGE);
+            return;
+        }
+
+        HostDirectoryEntry entry = currentEntries.get(row);
+        selectedHostFile = entry.getName();
+        confirmed = true;
+        dispose();
+    }
+
+    public boolean isConfirmed() {
+        return confirmed;
+    }
+
+    public String getSelectedHostFile() {
+        return selectedHostFile;
+    }
+}
@@ -0,0 +1,427 @@
+package haus.nightmare.j3270.ui;
+
+import java.io.*;
+import java.util.*;
+import java.util.logging.Logger;
+
+/**
+ * Keyboard mapping profile (.kmp) file importer and keybinding utility.
+ * Parses keyboard mapping profile files, translates key scan codes and mnemonics
+ * to j3270 action handlers.
+ */
+public class KeyBindings {
+
+    private static final Logger log = Logger.getLogger(KeyBindings.class.getName());
+
+    // IBM scan code to standard Java KeyStroke key name mapping
+    private static final Map<Integer, String> SCAN_CODE_MAP = new HashMap<>();
+
+    // Mnemonic to j3270 action mapping
+    private static final Map<String, String> MNEMONIC_MAP = new HashMap<>();
+
+    static {
+        // Alphanumeric and symbol keys
+        SCAN_CODE_MAP.put(1, "BACK_QUOTE");
+        SCAN_CODE_MAP.put(2, "1");
+        SCAN_CODE_MAP.put(3, "2");
+        SCAN_CODE_MAP.put(4, "3");
+        SCAN_CODE_MAP.put(5, "4");
+        SCAN_CODE_MAP.put(6, "5");
+        SCAN_CODE_MAP.put(7, "6");
+        SCAN_CODE_MAP.put(8, "7");
+        SCAN_CODE_MAP.put(9, "8");
+        SCAN_CODE_MAP.put(10, "9");
+        SCAN_CODE_MAP.put(11, "0");
+        SCAN_CODE_MAP.put(12, "MINUS");
+        SCAN_CODE_MAP.put(13, "EQUALS");
+        SCAN_CODE_MAP.put(14, "BACK_SPACE");
+        SCAN_CODE_MAP.put(15, "TAB");
+        SCAN_CODE_MAP.put(16, "Q");
+        SCAN_CODE_MAP.put(17, "W");
+        SCAN_CODE_MAP.put(18, "E");
+        SCAN_CODE_MAP.put(19, "R");
+        SCAN_CODE_MAP.put(20, "T");
+        SCAN_CODE_MAP.put(21, "Y");
+        SCAN_CODE_MAP.put(22, "U");
+        SCAN_CODE_MAP.put(23, "I");
+        SCAN_CODE_MAP.put(24, "O");
+        SCAN_CODE_MAP.put(25, "P");
+        SCAN_CODE_MAP.put(26, "OPEN_BRACKET");
+        SCAN_CODE_MAP.put(27, "CLOSE_BRACKET");
+        SCAN_CODE_MAP.put(28, "BACK_SLASH");
+        SCAN_CODE_MAP.put(29, "CAPS_LOCK");
+        SCAN_CODE_MAP.put(30, "A");
+        SCAN_CODE_MAP.put(31, "S");
+        SCAN_CODE_MAP.put(32, "D");
+        SCAN_CODE_MAP.put(33, "F");
+        SCAN_CODE_MAP.put(34, "G");
+        SCAN_CODE_MAP.put(35, "H");
+        SCAN_CODE_MAP.put(36, "J");
+        SCAN_CODE_MAP.put(37, "K");
+        SCAN_CODE_MAP.put(38, "L");
+        SCAN_CODE_MAP.put(39, "SEMICOLON");
+        SCAN_CODE_MAP.put(40, "QUOTE");
+        SCAN_CODE_MAP.put(41, "BACK_QUOTE");
+        SCAN_CODE_MAP.put(42, "ENTER");
+        SCAN_CODE_MAP.put(43, "ENTER");
+        SCAN_CODE_MAP.put(45, "Z");
+        SCAN_CODE_MAP.put(46, "X");
+        SCAN_CODE_MAP.put(47, "C");
+        SCAN_CODE_MAP.put(48, "V");
+        SCAN_CODE_MAP.put(49, "B");
+        SCAN_CODE_MAP.put(50, "N");
+        SCAN_CODE_MAP.put(51, "M");
+        SCAN_CODE_MAP.put(52, "COMMA");
+        SCAN_CODE_MAP.put(53, "PERIOD");
+        SCAN_CODE_MAP.put(54, "SLASH");
+        SCAN_CODE_MAP.put(57, "SPACE");
+
+        // Editing & Navigation keys
+        SCAN_CODE_MAP.put(75, "INSERT");
+        SCAN_CODE_MAP.put(76, "DELETE");
+        SCAN_CODE_MAP.put(79, "LEFT");
+        SCAN_CODE_MAP.put(80, "HOME");
+        SCAN_CODE_MAP.put(81, "END");
+        SCAN_CODE_MAP.put(83, "UP");
+        SCAN_CODE_MAP.put(84, "DOWN");
+        SCAN_CODE_MAP.put(85, "PAGE_UP");
+        SCAN_CODE_MAP.put(86, "PAGE_DOWN");
+        SCAN_CODE_MAP.put(89, "RIGHT");
+
+        // Numeric Keypad
+        SCAN_CODE_MAP.put(90, "NUM_LOCK");
+        SCAN_CODE_MAP.put(91, "NUMPAD7");
+        SCAN_CODE_MAP.put(92, "NUMPAD4");
+        SCAN_CODE_MAP.put(93, "NUMPAD1");
+        SCAN_CODE_MAP.put(95, "DIVIDE");
+        SCAN_CODE_MAP.put(96, "NUMPAD8");
+        SCAN_CODE_MAP.put(97, "NUMPAD5");
+        SCAN_CODE_MAP.put(98, "NUMPAD2");
+        SCAN_CODE_MAP.put(99, "NUMPAD0");
+        SCAN_CODE_MAP.put(100, "MULTIPLY");
+        SCAN_CODE_MAP.put(101, "NUMPAD9");
+        SCAN_CODE_MAP.put(102, "NUMPAD6");
+        SCAN_CODE_MAP.put(103, "NUMPAD3");
+        SCAN_CODE_MAP.put(104, "DECIMAL");
+        SCAN_CODE_MAP.put(105, "SUBTRACT");
+        SCAN_CODE_MAP.put(106, "ADD");
+        SCAN_CODE_MAP.put(108, "ENTER");
+
+        // Function keys & Escape
+        SCAN_CODE_MAP.put(110, "ESCAPE");
+        SCAN_CODE_MAP.put(112, "F1");
+        SCAN_CODE_MAP.put(113, "F2");
+        SCAN_CODE_MAP.put(114, "F3");
+        SCAN_CODE_MAP.put(115, "F4");
+        SCAN_CODE_MAP.put(116, "F5");
+        SCAN_CODE_MAP.put(117, "F6");
+        SCAN_CODE_MAP.put(118, "F7");
+        SCAN_CODE_MAP.put(119, "F8");
+        SCAN_CODE_MAP.put(120, "F9");
+        SCAN_CODE_MAP.put(121, "F10");
+        SCAN_CODE_MAP.put(122, "F11");
+        SCAN_CODE_MAP.put(123, "F12");
+
+        // Mnemonics mapping
+        MNEMONIC_MAP.put("enter", "ENTER");
+        MNEMONIC_MAP.put("enterreset", "ENTER");
+        MNEMONIC_MAP.put("newline", "NEWLINE");
+        MNEMONIC_MAP.put("tab", "TAB");
+        MNEMONIC_MAP.put("backtab", "shift TAB");
+        MNEMONIC_MAP.put("reset", "ESCAPE");
+        MNEMONIC_MAP.put("clear", "CLEAR");
+        MNEMONIC_MAP.put("eraseeof", "END");
+        MNEMONIC_MAP.put("eof", "END");
+        MNEMONIC_MAP.put("erasefld", "ERASE_INPUT");
+        MNEMONIC_MAP.put("erinp", "ERASE_INPUT");
+        MNEMONIC_MAP.put("eraseinput", "ERASE_INPUT");
+        MNEMONIC_MAP.put("dup", "DUP");
+        MNEMONIC_MAP.put("fieldmark", "FIELD_MARK");
+        MNEMONIC_MAP.put("fldmark", "FIELD_MARK");
+        MNEMONIC_MAP.put("fldext", "NEWLINE");
+        MNEMONIC_MAP.put("field-exit", "NEWLINE");
+        MNEMONIC_MAP.put("field+", "TAB");
+        MNEMONIC_MAP.put("field-", "TAB");
+        MNEMONIC_MAP.put("attn", "ATTN");
+        MNEMONIC_MAP.put("sysreq", "SYSREQ");
+        MNEMONIC_MAP.put("cursel", "CURSEL");
+        MNEMONIC_MAP.put("copy", "COPY");
+        MNEMONIC_MAP.put("paste", "PASTE");
+        MNEMONIC_MAP.put("selectall", "SELECTALL");
+        MNEMONIC_MAP.put("insert", "INSERT");
+        MNEMONIC_MAP.put("delete", "DELETE");
+        MNEMONIC_MAP.put("backspace", "BACK_SPACE");
+        MNEMONIC_MAP.put("home", "HOME");
+        MNEMONIC_MAP.put("end", "END");
+        MNEMONIC_MAP.put("up", "UP");
+        MNEMONIC_MAP.put("down", "DOWN");
+        MNEMONIC_MAP.put("left", "LEFT");
+        MNEMONIC_MAP.put("right", "RIGHT");
+        MNEMONIC_MAP.put("pageup", "PAGE_UP");
+        MNEMONIC_MAP.put("pagedn", "PAGE_DOWN");
+        MNEMONIC_MAP.put("pagedown", "PAGE_DOWN");
+        MNEMONIC_MAP.put("docmode", "DOCMODE");
+        MNEMONIC_MAP.put("wordwrap", "WORDWRAP");
+        MNEMONIC_MAP.put("apl", "APL");
+        MNEMONIC_MAP.put("rule", "CROSSHAIR_RULER");
+        MNEMONIC_MAP.put("statusbar", "STATUS_BAR");
+
+        for (int i = 1; i <= 24; i++) {
+            MNEMONIC_MAP.put("pf" + i, "PF" + i);
+        }
+        for (int i = 1; i <= 3; i++) {
+            MNEMONIC_MAP.put("pa" + i, "PA" + i);
+        }
+        // Shifted PF keys 1-12 = PF13-PF24
+        for (int i = 1; i <= 12; i++) {
+            MNEMONIC_MAP.put("spf" + i, "PF" + (i + 12));
+        }
+    }
+
+    /**
+     * Parse a .kmp file from a File object.
+     *
+     * @param file the .kmp file to parse
+     * @return Map of j3270 action names to key stroke bindings
+     * @throws IOException on I/O error
+     */
+    public static Map<String, String> parseKmp(File file) throws IOException {
+        try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
+            return parseKmp(reader);
+        }
+    }
+
+    /**
+     * Parse a .kmp file from an InputStream.
+     *
+     * @param in the InputStream to parse
+     * @return Map of j3270 action names to key stroke bindings
+     * @throws IOException on I/O error
+     */
+    public static Map<String, String> parseKmp(InputStream in) throws IOException {
+        try (BufferedReader reader = new BufferedReader(new InputStreamReader(in))) {
+            return parseKmp(reader);
+        }
+    }
+
+    /**
+     * Parse a .kmp file from a Reader.
+     * Supports both INI-style KEY<n>=action formats and bind statements.
+     *
+     * @param reader the reader to parse from
+     * @return Map of j3270 action names to key stroke bindings
+     * @throws IOException on I/O error
+     */
+    public static Map<String, String> parseKmp(Reader reader) throws IOException {
+        BufferedReader br = (reader instanceof BufferedReader) ? (BufferedReader) reader : new BufferedReader(reader);
+        Map<String, List<String>> actionToBindings = new LinkedHashMap<>();
+
+        String line;
+        while ((line = br.readLine()) != null) {
+            line = line.trim();
+
+            // Strip comments
+            int commentIdx = line.indexOf(';');
+            if (commentIdx >= 0) {
+                line = line.substring(0, commentIdx).trim();
+            }
+            commentIdx = line.indexOf('#');
+            if (commentIdx >= 0) {
+                line = line.substring(0, commentIdx).trim();
+            }
+
+            if (line.isEmpty() || line.startsWith("[")) {
+                continue; // Skip section headers and blank lines
+            }
+
+            // Syntax 1: bind [mnemonic] KeyCombination  OR  bind action KeyCombination
+            if (line.toLowerCase().startsWith("bind ")) {
+                parseBindStatement(line.substring(5).trim(), actionToBindings);
+                continue;
+            }
+
+            // Syntax 2: KEY<n>=action  OR  Modifier-KEY<n>=action  OR  KeyStroke=[mnemonic]
+            int eq = line.indexOf('=');
+            if (eq > 0) {
+                String left = line.substring(0, eq).trim();
+                String right = line.substring(eq + 1).trim();
+                parseKeyAssignment(left, right, actionToBindings);
+            }
+        }
+
+        // Format into combined comma-separated bindings map
+        Map<String, String> result = new LinkedHashMap<>();
+        for (Map.Entry<String, List<String>> entry : actionToBindings.entrySet()) {
+            String action = entry.getKey();
+            List<String> bindings = entry.getValue();
+            if (!bindings.isEmpty()) {
+                result.put(action, String.join(", ", bindings));
+            }
+        }
+
+        return result;
+    }
+
+    private static void parseBindStatement(String stmt, Map<String, List<String>> actionToBindings) {
+        String[] parts = stmt.split("\\s+", 2);
+        if (parts.length < 2) return;
+
+        String target = parts[0].trim();
+        String keyStrokeStr = parts[1].trim();
+
+        String action = resolveMnemonic(target);
+        if (action == null) {
+            // Check if parts[1] was the mnemonic instead (e.g. "bind KeyCombination [mnemonic]")
+            String altAction = resolveMnemonic(keyStrokeStr);
+            if (altAction != null) {
+                action = altAction;
+                keyStrokeStr = target;
+            }
+        }
+
+        if (action != null) {
+            String normKeyStroke = normalizeKeyStroke(keyStrokeStr);
+            if (normKeyStroke != null && !normKeyStroke.isEmpty()) {
+                addBinding(actionToBindings, action, normKeyStroke);
+            }
+        }
+    }
+
+    private static void parseKeyAssignment(String left, String right, Map<String, List<String>> actionToBindings) {
+        // Case A: left is KEY<n> or Modifier-KEY<n>, right is mnemonic
+        String action = resolveMnemonic(right);
+        String keyStroke = null;
+
+        if (action != null) {
+            keyStroke = parseScanCodeEntry(left);
+        } else {
+            // Case B: left is mnemonic, right is KeyStroke
+            action = resolveMnemonic(left);
+            if (action != null) {
+                keyStroke = normalizeKeyStroke(right);
+            } else {
+                // Case C: left is KeyStroke, right is mnemonic
+                action = resolveMnemonic(right);
+                if (action != null) {
+                    keyStroke = normalizeKeyStroke(left);
+                }
+            }
+        }
+
+        if (action != null && keyStroke != null && !keyStroke.isEmpty()) {
+            addBinding(actionToBindings, action, keyStroke);
+        }
+    }
+
+    /**
+     * Parse scan code entry like "KEY43", "S-KEY112", "C-KEY43", "CS-KEY85", etc.
+     */
+    public static String parseScanCodeEntry(String entry) {
+        if (entry == null || entry.isEmpty()) return null;
+
+        String upper = entry.toUpperCase().trim();
+        int keyPos = upper.indexOf("KEY");
+        if (keyPos < 0) {
+            return normalizeKeyStroke(entry);
+        }
+
+        String prefix = upper.substring(0, keyPos);
+        if (prefix.endsWith("-")) {
+            prefix = prefix.substring(0, prefix.length() - 1);
+        }
+
+        String numPart = upper.substring(keyPos + 3);
+        int scanCode;
+        try {
+            scanCode = Integer.parseInt(numPart.trim());
+        } catch (NumberFormatException e) {
+            return null;
+        }
+
+        String baseKey = SCAN_CODE_MAP.get(scanCode);
+        if (baseKey == null) {
+            return null;
+        }
+
+        StringBuilder sb = new StringBuilder();
+        if (prefix.contains("C")) sb.append("ctrl ");
+        if (prefix.contains("A") || prefix.contains("2")) sb.append("alt ");
+        if (prefix.contains("S")) sb.append("shift ");
+        if (prefix.contains("M")) sb.append("meta ");
+
+        sb.append(baseKey);
+        return sb.toString().trim();
+    }
+
+    /**
+     * Normalize key stroke expression (e.g. "Ctrl+Shift+C" -> "ctrl shift C").
+     */
+    public static String normalizeKeyStroke(String stroke) {
+        if (stroke == null || stroke.trim().isEmpty()) return null;
+        String s = stroke.trim();
+
+        // Check if it is an IBM scan code
+        if (s.toUpperCase().contains("KEY")) {
+            String fromScan = parseScanCodeEntry(s);
+            if (fromScan != null) return fromScan;
+        }
+
+        // Replace '+' with space
+        s = s.replace("+", " ");
+        String[] parts = s.split("\\s+");
+
+        StringBuilder mods = new StringBuilder();
+        String mainKey = null;
+
+        for (String p : parts) {
+            String lp = p.toLowerCase();
+            if ("ctrl".equals(lp) || "control".equals(lp)) {
+                mods.append("ctrl ");
+            } else if ("shift".equals(lp)) {
+                mods.append("shift ");
+            } else if ("alt".equals(lp)) {
+                mods.append("alt ");
+            } else if ("meta".equals(lp) || "cmd".equals(lp) || "command".equals(lp)) {
+                mods.append("meta ");
+            } else {
+                mainKey = p.toUpperCase();
+            }
+        }
+
+        if (mainKey == null) return null;
+        return (mods.toString() + mainKey).trim();
+    }
+
+    /**
+     * Resolve a mnemonic token (e.g. "[enter]", "enter", "[pf12]", "eraseeof")
+     * into a j3270 action name.
+     */
+    public static String resolveMnemonic(String token) {
+        if (token == null) return null;
+        String clean = token.trim();
+        if (clean.startsWith("[") && clean.endsWith("]")) {
+            clean = clean.substring(1, clean.length() - 1);
+        }
+        clean = clean.toLowerCase();
+
+        String direct = MNEMONIC_MAP.get(clean);
+        if (direct != null) {
+            return direct;
+        }
+
+        // Case-insensitive match on existing action names
+        String upper = clean.toUpperCase();
+        if (MNEMONIC_MAP.containsValue(upper)) {
+            return upper;
+        }
+
+        return null;
+    }
+
+    private static void addBinding(Map<String, List<String>> map, String action, String keyStroke) {
+        List<String> list = map.computeIfAbsent(action, k -> new ArrayList<>());
+        if (!list.contains(keyStroke)) {
+            list.add(keyStroke);
+        }
+    }
+}
@@ -0,0 +1,453 @@
+package haus.nightmare.j3270.ui;
+
+import haus.nightmare.lib3270j.printer.*;
+
+import javax.swing.*;
+import javax.swing.border.EmptyBorder;
+import javax.swing.border.LineBorder;
+import javax.swing.border.TitledBorder;
+import java.awt.*;
+import java.awt.print.PrinterJob;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+
+/**
+ * IBM 3287 / 3286 TN3270E Printer Session Manager and Spool Viewer.
+ * Integrates directly with lib3270j.printer.Telnet3270EP and PD3270.
+ */
+public class PrinterSessionDialog extends JDialog implements PrintSessionListener {
+
+    private final Frame parent;
+    private PrinterConfig config;
+    private Telnet3270EP printerSession;
+
+    // Configuration Fields
+    private JTextField hostField;
+    private JTextField portField;
+    private JTextField printerLuField;
+    private JTextField displayLuField;
+    private JComboBox<String> codePageCombo;
+    private JCheckBox tlsCheck;
+    private JCheckBox verifyCertCheck;
+    private JComboBox<PrinterConfig.DestinationType> destinationCombo;
+    private JTextField targetField;
+
+    // Status Fields
+    private JLabel statusLabel;
+    private JLabel sessionTypeLabel;
+    private JLabel pagesLabel;
+    private JLabel bytesLabel;
+    private JButton connectBtn;
+    private JButton disconnectBtn;
+
+    // Spool Display
+    private JTextArea spoolArea;
+
+    public PrinterSessionDialog(Frame parent, String defaultHost, int defaultPort, boolean defaultTls) {
+        super(parent, "IBM 3287 Printer Session Manager", false);
+        this.parent = parent;
+        AppIcon.applyTo(this);
+
+        config = new PrinterConfig(defaultHost, defaultPort);
+        config.setUseTls(defaultTls);
+        config.setDestinationType(PrinterConfig.DestinationType.MEMORY);
+
+        buildUI();
+        setSize(780, 560);
+        setLocationRelativeTo(parent);
+    }
+
+    private void buildUI() {
+        JPanel mainPanel = new JPanel(new BorderLayout(10, 10));
+        mainPanel.setBorder(new EmptyBorder(12, 14, 12, 14));
+
+        // Top: Configuration Panel
+        JPanel topPanel = new JPanel(new GridBagLayout());
+        topPanel.setOpaque(false);
+        topPanel.setBorder(ThemeManager.createTitledBorder("Printer Session Configuration"));
+
+        GridBagConstraints gbc = new GridBagConstraints();
+        gbc.insets = new Insets(3, 4, 3, 4);
+        gbc.fill = GridBagConstraints.HORIZONTAL;
+
+        Font labelFont = ThemeManager.getUiFont();
+
+        // Host / Port
+        gbc.gridx = 0; gbc.gridy = 0;
+        JLabel hLbl = new JLabel("Host:");
+        hLbl.setFont(labelFont);
+        topPanel.add(hLbl, gbc);
+
+        gbc.gridx = 1; gbc.weightx = 1.0;
+        hostField = createField(config.getHost() != null ? config.getHost() : "localhost", 14);
+        topPanel.add(hostField, gbc);
+
+        gbc.gridx = 2; gbc.weightx = 0;
+        JLabel pLbl = new JLabel("Port:");
+        pLbl.setFont(labelFont);
+        topPanel.add(pLbl, gbc);
+
+        gbc.gridx = 3; gbc.weightx = 0.5;
+        portField = createField(String.valueOf(config.getPort()), 5);
+        topPanel.add(portField, gbc);
+
+        // Printer LU / Display LU
+        gbc.gridx = 0; gbc.gridy = 1; gbc.weightx = 0;
+        JLabel pluLbl = new JLabel("Printer LU:");
+        pluLbl.setFont(labelFont);
+        topPanel.add(pluLbl, gbc);
+
+        gbc.gridx = 1; gbc.weightx = 1.0;
+        printerLuField = createField("", 10);
+        topPanel.add(printerLuField, gbc);
+
+        gbc.gridx = 2; gbc.weightx = 0;
+        JLabel assocLbl = new JLabel("Assoc LU:");
+        assocLbl.setFont(labelFont);
+        topPanel.add(assocLbl, gbc);
+
+        gbc.gridx = 3; gbc.weightx = 0.5;
+        displayLuField = createField("", 10);
+        topPanel.add(displayLuField, gbc);
+
+        // CodePage & TLS
+        gbc.gridx = 0; gbc.gridy = 2; gbc.weightx = 0;
+        JLabel cpLbl = new JLabel("CodePage:");
+        cpLbl.setFont(labelFont);
+        topPanel.add(cpLbl, gbc);
+
+        gbc.gridx = 1; gbc.weightx = 1.0;
+        codePageCombo = new JComboBox<>(new String[]{"037", "1047", "500", "273", "277", "278", "280", "284", "285", "297", "870", "1140"});
+        ThemeManager.styleComboBox(codePageCombo);
+        topPanel.add(codePageCombo, gbc);
+
+        gbc.gridx = 2; gbc.gridwidth = 2;
+        JPanel tlsPanel = new JPanel(new FlowLayout(FlowLayout.LEFT, 4, 0));
+        tlsPanel.setOpaque(false);
+        tlsCheck = new JCheckBox("TLS/SSL", config.isUseTls());
+        ThemeManager.styleCheckBox(tlsCheck);
+        verifyCertCheck = new JCheckBox("Verify Cert", config.isTlsVerifyCert());
+        ThemeManager.styleCheckBox(verifyCertCheck);
+        tlsPanel.add(tlsCheck);
+        tlsPanel.add(verifyCertCheck);
+        topPanel.add(tlsPanel, gbc);
+
+        // Destination Type & Target
+        gbc.gridx = 0; gbc.gridy = 3; gbc.gridwidth = 1;
+        JLabel destLbl = new JLabel("Destination:");
+        destLbl.setFont(labelFont);
+        topPanel.add(destLbl, gbc);
+
+        gbc.gridx = 1;
+        destinationCombo = new JComboBox<>(PrinterConfig.DestinationType.values());
+        destinationCombo.setSelectedItem(PrinterConfig.DestinationType.MEMORY);
+        ThemeManager.styleComboBox(destinationCombo);
+        topPanel.add(destinationCombo, gbc);
+
+        gbc.gridx = 2;
+        JLabel tgtLbl = new JLabel("Target Path:");
+        tgtLbl.setFont(labelFont);
+        topPanel.add(tgtLbl, gbc);
+
+        gbc.gridx = 3;
+        targetField = createField("printer_output.txt", 12);
+        topPanel.add(targetField, gbc);
+
+        // Connect / Disconnect Buttons
+        gbc.gridx = 0; gbc.gridy = 4; gbc.gridwidth = 4;
+        JPanel connBtnPan = new JPanel(new FlowLayout(FlowLayout.RIGHT, 6, 0));
+        connBtnPan.setOpaque(false);
+
+        connectBtn = new JButton("Start Printer Session");
+        ThemeManager.styleButton(connectBtn, ThemeManager.ButtonVariant.PRIMARY);
+        connectBtn.addActionListener(e -> startPrinterSession());
+
+        disconnectBtn = new JButton("Stop Session");
+        ThemeManager.styleButton(disconnectBtn, ThemeManager.ButtonVariant.DANGER);
+        disconnectBtn.setEnabled(false);
+        disconnectBtn.addActionListener(e -> stopPrinterSession());
+
+        connBtnPan.add(connectBtn);
+        connBtnPan.add(disconnectBtn);
+        topPanel.add(connBtnPan, gbc);
+
+        mainPanel.add(topPanel, BorderLayout.NORTH);
+
+        // Center: Spool Area & Status
+        JPanel centerPanel = new JPanel(new BorderLayout(6, 6));
+        centerPanel.setOpaque(false);
+        centerPanel.setBorder(ThemeManager.createTitledBorder("Printer Spool & Status"));
+
+        // Status Header
+        JPanel statusHeader = new JPanel(new GridLayout(1, 4, 10, 0));
+        statusHeader.setOpaque(false);
+        statusHeader.setBorder(new EmptyBorder(0, 4, 4, 4));
+
+        statusLabel = new JLabel("Status: Disconnected");
+        statusLabel.setForeground(ThemeManager.getFgMuted());
+        statusLabel.setFont(labelFont);
+
+        sessionTypeLabel = new JLabel("Session: -");
+        sessionTypeLabel.setFont(labelFont);
+
+        pagesLabel = new JLabel("Pages: 0");
+        pagesLabel.setFont(labelFont);
+
+        bytesLabel = new JLabel("Bytes: 0");
+        bytesLabel.setFont(labelFont);
+
+        statusHeader.add(statusLabel);
+        statusHeader.add(sessionTypeLabel);
+        statusHeader.add(pagesLabel);
+        statusHeader.add(bytesLabel);
+        centerPanel.add(statusHeader, BorderLayout.NORTH);
+
+        // Spool text area
+        spoolArea = new JTextArea();
+        spoolArea.setFont(ThemeManager.getMonospacedUiFont());
+        spoolArea.setEditable(false);
+        ThemeManager.styleTextArea(spoolArea);
+
+        JScrollPane spoolScroll = new JScrollPane(spoolArea);
+        ThemeManager.styleScrollPane(spoolScroll);
+        centerPanel.add(spoolScroll, BorderLayout.CENTER);
+
+        mainPanel.add(centerPanel, BorderLayout.CENTER);
+
+        // Bottom: Spool controls
+        JPanel bottomPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT, 6, 0));
+        bottomPanel.setOpaque(false);
+
+        JButton clearSpoolBtn = new JButton("Clear Spool");
+        ThemeManager.styleButton(clearSpoolBtn, ThemeManager.ButtonVariant.DEFAULT);
+        clearSpoolBtn.addActionListener(e -> {
+            spoolArea.setText("");
+            if (printerSession != null && printerSession.getPD() != null) {
+                printerSession.getPD().resetCapture();
+            }
+            pagesLabel.setText("Pages: 0");
+            bytesLabel.setText("Bytes: 0");
+        });
+
+        JButton saveSpoolBtn = new JButton("Save Spool As...");
+        ThemeManager.styleButton(saveSpoolBtn, ThemeManager.ButtonVariant.DEFAULT);
+        saveSpoolBtn.addActionListener(e -> saveSpool());
+
+        JButton printSpoolBtn = new JButton("Print Spool...");
+        ThemeManager.styleButton(printSpoolBtn, ThemeManager.ButtonVariant.DEFAULT);
+        printSpoolBtn.addActionListener(e -> printSpool());
+
+        JButton closeBtn = new JButton("Close");
+        ThemeManager.styleButton(closeBtn, ThemeManager.ButtonVariant.CANCEL);
+        closeBtn.addActionListener(e -> dispose());
+
+        bottomPanel.add(clearSpoolBtn);
+        bottomPanel.add(saveSpoolBtn);
+        bottomPanel.add(printSpoolBtn);
+        bottomPanel.add(Box.createHorizontalStrut(10));
+        bottomPanel.add(closeBtn);
+
+        mainPanel.add(bottomPanel, BorderLayout.SOUTH);
+
+        setContentPane(mainPanel);
+        ThemeManager.applyThemeToWindow(this);
+    }
+
+    private JTextField createField(String text, int cols) {
+        JTextField tf = new JTextField(text, cols);
+        tf.setFont(ThemeManager.getMonospacedUiFont());
+        ThemeManager.styleTextField(tf);
+        return tf;
+    }
+
+    private void startPrinterSession() {
+        String host = hostField.getText().trim();
+        if (host.isEmpty()) {
+            hostField.requestFocus();
+            return;
+        }
+
+        int port = 23;
+        try {
+            port = Integer.parseInt(portField.getText().trim());
+        } catch (NumberFormatException ignored) {}
+
+        config.setHost(host);
+        config.setPort(port);
+        config.setUseTls(tlsCheck.isSelected());
+        config.setTlsVerifyCert(verifyCertCheck.isSelected());
+        config.setCodePage((String) codePageCombo.getSelectedItem());
+
+        String plu = printerLuField.getText().trim();
+        config.setPrinterLuName(plu.isEmpty() ? null : plu);
+
+        String dlu = displayLuField.getText().trim();
+        config.setAssociatedDisplayLuName(dlu.isEmpty() ? null : dlu);
+
+        config.setDestinationType((PrinterConfig.DestinationType) destinationCombo.getSelectedItem());
+        config.setDestinationTarget(targetField.getText().trim());
+
+        if (printerSession != null) {
+            printerSession.close();
+        }
+
+        printerSession = new Telnet3270EP(config);
+        printerSession.addPrintListener(this);
+
+        connectBtn.setEnabled(false);
+        disconnectBtn.setEnabled(true);
+        statusLabel.setText("Status: Connecting...");
+        statusLabel.setForeground(new Color(255, 200, 80));
+
+        new Thread(() -> {
+            boolean success = printerSession.open();
+            if (!success) {
+                SwingUtilities.invokeLater(() -> {
+                    connectBtn.setEnabled(true);
+                    disconnectBtn.setEnabled(false);
+                    statusLabel.setText("Status: Connection Failed");
+                    statusLabel.setForeground(new Color(255, 80, 80));
+                });
+            }
+        }, "PrinterSession-Thread").start();
+    }
+
+    private void stopPrinterSession() {
+        if (printerSession != null) {
+            printerSession.close();
+            printerSession = null;
+        }
+        connectBtn.setEnabled(true);
+        disconnectBtn.setEnabled(false);
+        statusLabel.setText("Status: Disconnected");
+        statusLabel.setForeground(new Color(180, 180, 180));
+        sessionTypeLabel.setText("Session: -");
+    }
+
+    private void saveSpool() {
+        JFileChooser fc = new JFileChooser();
+        fc.setDialogTitle("Save Printer Spool Output");
+        fc.setSelectedFile(new File("spool_output.txt"));
+        if (fc.showSaveDialog(this) == JFileChooser.APPROVE_OPTION) {
+            try (FileOutputStream fos = new FileOutputStream(fc.getSelectedFile())) {
+                fos.write(spoolArea.getText().getBytes(StandardCharsets.UTF_8));
+                JOptionPane.showMessageDialog(this, "Spool saved successfully to " + fc.getSelectedFile().getName(),
+                        "Saved", JOptionPane.INFORMATION_MESSAGE);
+            } catch (IOException e) {
+                JOptionPane.showMessageDialog(this, "Save error: " + e.getMessage(),
+                        "Error", JOptionPane.ERROR_MESSAGE);
+            }
+        }
+    }
+
+    private void printSpool() {
+        String text = spoolArea.getText();
+        if (text.isEmpty()) {
+            JOptionPane.showMessageDialog(this, "Spool buffer is empty.", "Nothing to Print", JOptionPane.INFORMATION_MESSAGE);
+            return;
+        }
+
+        PrinterJob job = PrinterJob.getPrinterJob();
+        job.setJobName("j3270 3287 Print Spool");
+        if (job.printDialog()) {
+            try {
+                spoolArea.print();
+            } catch (Exception ex) {
+                JOptionPane.showMessageDialog(this, "Print error: " + ex.getMessage(), "Print Error", JOptionPane.ERROR_MESSAGE);
+            }
+        }
+    }
+
+    // ========== PrintSessionListener ==========
+
+    @Override
+    public void onPrintJobStarted(PrintSessionEvent event) {
+        SwingUtilities.invokeLater(() -> {
+            statusLabel.setText("Status: Printing...");
+            statusLabel.setForeground(new Color(50, 205, 50));
+        });
+    }
+
+    @Override
+    public void onPrintJobData(PrintSessionEvent event) {
+        SwingUtilities.invokeLater(() -> {
+            if (printerSession != null && printerSession.getPD() != null) {
+                spoolArea.setText(printerSession.getPD().getCapturedText());
+                spoolArea.setCaretPosition(spoolArea.getDocument().getLength());
+                pagesLabel.setText("Pages: " + printerSession.getPD().getPageCount());
+                bytesLabel.setText("Bytes: " + printerSession.getPD().getByteCount());
+            }
+        });
+    }
+
+    @Override
+    public void onPrintJobPageComplete(PrintSessionEvent event) {
+        SwingUtilities.invokeLater(() -> {
+            if (printerSession != null && printerSession.getPD() != null) {
+                spoolArea.setText(printerSession.getPD().getCapturedText());
+                pagesLabel.setText("Pages: " + printerSession.getPD().getPageCount());
+                bytesLabel.setText("Bytes: " + printerSession.getPD().getByteCount());
+            }
+        });
+    }
+
+    @Override
+    public void onPrintJobComplete(PrintSessionEvent event) {
+        SwingUtilities.invokeLater(() -> {
+            if (printerSession != null && printerSession.getPD() != null) {
+                spoolArea.setText(printerSession.getPD().getCapturedText());
+                pagesLabel.setText("Pages: " + printerSession.getPD().getPageCount());
+                bytesLabel.setText("Bytes: " + printerSession.getPD().getByteCount());
+            }
+            statusLabel.setText("Status: In Session (Idle)");
+            statusLabel.setForeground(new Color(50, 205, 50));
+        });
+    }
+
+    @Override
+    public void onPrinterStatusChanged(PrintSessionEvent event) {
+        SwingUtilities.invokeLater(() -> {
+            int code = event.getStatusCode();
+            if (code == PrinterConstants.STATUS_CONNECTED || code == PrinterConstants.STATUS_PRINTER_READY || code == PrinterConstants.STATUS_PRINTING || code == PrinterConstants.STATUS_JOB_COMPLETE || code == PrinterConstants.STATUS_PAGE_COMPLETE) {
+                String lu = printerSession != null ? printerSession.getAssignedLuName() : null;
+                statusLabel.setText("Status: Connected" + (lu != null ? " (" + lu + ")" : ""));
+                statusLabel.setForeground(new Color(50, 205, 50));
+                connectBtn.setEnabled(false);
+                disconnectBtn.setEnabled(true);
+
+                if (printerSession != null) {
+                    short luType = printerSession.getActiveLuType();
+                    if (luType == PrinterConstants.LU_TYPE_1_SCS) {
+                        sessionTypeLabel.setText("Session: LU1 (SCS)");
+                    } else if (luType == PrinterConstants.LU_TYPE_3_DS) {
+                        sessionTypeLabel.setText("Session: LU3 (3270 DS)");
+                    }
+                }
+            } else if (code == PrinterConstants.STATUS_DISCONNECTED) {
+                statusLabel.setText("Status: Disconnected");
+                statusLabel.setForeground(new Color(180, 180, 180));
+                connectBtn.setEnabled(true);
+                disconnectBtn.setEnabled(false);
+                sessionTypeLabel.setText("Session: -");
+            } else {
+                statusLabel.setText("Status: " + event.getMessage());
+            }
+        });
+    }
+
+    @Override
+    public void onPrinterError(PrintSessionEvent event) {
+        SwingUtilities.invokeLater(() -> {
+            statusLabel.setText("Status: Error (" + event.getMessage() + ")");
+            statusLabel.setForeground(new Color(255, 80, 80));
+        });
+    }
+
+    @Override
+    public void dispose() {
+        stopPrinterSession();
+        super.dispose();
+    }
+}
@@ -0,0 +1,255 @@
+package haus.nightmare.j3270.ui;
+
+import haus.nightmare.lib3270j.Telnet3270Client;
+import haus.nightmare.lib3270j.screen.ExtendedAttribute;
+import haus.nightmare.lib3270j.screen.ScreenBuffer;
+import static haus.nightmare.lib3270j.protocol.DS3270Constants.*;
+
+import javax.imageio.ImageIO;
+import javax.swing.*;
+import javax.swing.filechooser.FileNameExtensionFilter;
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.io.*;
+import java.nio.charset.StandardCharsets;
+
+/**
+ * Utility for exporting the 3270 Presentation Space to Plain Text, HTML, or PNG image.
+ */
+public class ScreenExporter {
+
+    public static void showExportDialog(Frame parent, Telnet3270Client client, TerminalPanel panel) {
+        if (client == null) {
+            JOptionPane.showMessageDialog(parent, "Connect to a host before exporting the screen.",
+                    "Not Connected", JOptionPane.WARNING_MESSAGE);
+            return;
+        }
+
+        JFileChooser fc = new JFileChooser();
+        fc.setDialogTitle("Save Screen As...");
+        fc.addChoosableFileFilter(new FileNameExtensionFilter("PNG Image (*.png)", "png"));
+        fc.addChoosableFileFilter(new FileNameExtensionFilter("HTML Document (*.html)", "html", "htm"));
+        FileNameExtensionFilter txtFilter = new FileNameExtensionFilter("Plain Text (*.txt)", "txt");
+        fc.addChoosableFileFilter(txtFilter);
+        fc.setFileFilter(txtFilter);
+        fc.setSelectedFile(new File("screen_capture.txt"));
+
+        int result = fc.showSaveDialog(parent);
+        if (result == JFileChooser.APPROVE_OPTION) {
+            File file = fc.getSelectedFile();
+            String name = file.getName().toLowerCase();
+
+            try {
+                if (name.endsWith(".png") || (fc.getFileFilter() != null && fc.getFileFilter().getDescription().contains("PNG"))) {
+                    if (!name.endsWith(".png")) file = new File(file.getAbsolutePath() + ".png");
+                    exportToPng(panel, file);
+                } else if (name.endsWith(".html") || name.endsWith(".htm") || (fc.getFileFilter() != null && fc.getFileFilter().getDescription().contains("HTML"))) {
+                    if (!name.endsWith(".html") && !name.endsWith(".htm")) file = new File(file.getAbsolutePath() + ".html");
+                    exportToHtml(client, file);
+                } else {
+                    if (!name.endsWith(".txt")) file = new File(file.getAbsolutePath() + ".txt");
+                    exportToText(client, file);
+                }
+
+                JOptionPane.showMessageDialog(parent, "Screen saved successfully to:\n" + file.getAbsolutePath(),
+                        "Export Successful", JOptionPane.INFORMATION_MESSAGE);
+            } catch (Exception ex) {
+                JOptionPane.showMessageDialog(parent, "Failed to export screen: " + ex.getMessage(),
+                        "Export Error", JOptionPane.ERROR_MESSAGE);
+            }
+        }
+    }
+
+    public static void exportToText(Telnet3270Client client, File file) throws IOException {
+        ScreenBuffer sb = client.getScreenBuffer();
+        int rows = sb.getDisplayRows();
+        int cols = sb.getDisplayCols();
+
+        try (BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), StandardCharsets.UTF_8))) {
+            for (int r = 0; r < rows; r++) {
+                StringBuilder line = new StringBuilder();
+                for (int c = 0; c < cols; c++) {
+                    ExtendedAttribute ea = sb.getCell(r * cols + c);
+                    char ch = ea.ucs4;
+                    if (ea.isFieldAttribute() || ch <= 0x20 || ch == 0xFF) {
+                        line.append(' ');
+                    } else {
+                        line.append(ch);
+                    }
+                }
+                // Strip trailing spaces for clean text output
+                int lastNonSpace = line.length() - 1;
+                while (lastNonSpace >= 0 && line.charAt(lastNonSpace) == ' ') {
+                    lastNonSpace--;
+                }
+                writer.write(line.substring(0, lastNonSpace + 1));
+                writer.newLine();
+            }
+        }
+    }
+
+    public static void exportToHtml(Telnet3270Client client, File file) throws IOException {
+        ScreenBuffer sb = client.getScreenBuffer();
+        int rows = sb.getDisplayRows();
+        int cols = sb.getDisplayCols();
+
+        try (BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), StandardCharsets.UTF_8))) {
+            writer.write("<!DOCTYPE html>\n<html>\n<head>\n<meta charset=\"utf-8\">\n<title>3270 Screen Capture</title>\n");
+            writer.write("<style>\n");
+            writer.write("body { background-color: #0a0a0a; color: #32cd32; font-family: 'Courier New', Courier, monospace; font-size: 14px; margin: 20px; }\n");
+            writer.write(".screen { background-color: #000; padding: 15px; border-radius: 4px; display: inline-block; box-shadow: 0 0 10px rgba(0,0,0,0.8); line-height: 1.2; }\n");
+            writer.write(".c-blue { color: #7890f0; }\n");
+            writer.write(".c-red { color: #ff0000; }\n");
+            writer.write(".c-pink { color: #ff00ff; }\n");
+            writer.write(".c-green { color: #00ff00; }\n");
+            writer.write(".c-turq { color: #00ffff; }\n");
+            writer.write(".c-yellow { color: #ffff00; }\n");
+            writer.write(".c-white { color: #ffffff; }\n");
+            writer.write(".c-black { color: #000000; }\n");
+            writer.write(".c-deepblue { color: #000080; }\n");
+            writer.write(".c-orange { color: #ffa200; }\n");
+            writer.write(".c-purple { color: #800080; }\n");
+            writer.write(".c-palegreen { color: #008000; }\n");
+            writer.write(".c-paleturq { color: #008080; }\n");
+            writer.write(".c-mustard { color: #a0a000; }\n");
+            writer.write(".c-grey { color: #c0c0c0; }\n");
+            writer.write(".bold { font-weight: bold; }\n");
+            writer.write(".underline { text-decoration: underline; }\n");
+            writer.write("</style>\n</head>\n<body>\n<div class=\"screen\"><pre>");
+
+            byte currentFA = 0;
+            ExtendedAttribute currentFieldEa = null;
+
+            for (int r = 0; r < rows; r++) {
+                String currentStyle = null;
+                StringBuilder currentRun = new StringBuilder();
+
+                for (int c = 0; c < cols; c++) {
+                    int baddr = r * cols + c;
+                    ExtendedAttribute ea = sb.getCell(baddr);
+
+                    if (ea.isFieldAttribute()) {
+                        currentFA = ea.fa;
+                        currentFieldEa = ea;
+                        if (currentRun.length() > 0) {
+                            writeHtmlSpan(writer, currentStyle, currentRun.toString());
+                            currentRun.setLength(0);
+                            currentStyle = null;
+                        }
+                        writer.write(' ');
+                        continue;
+                    }
+
+                    if (faIsZero(currentFA & 0xFF)) {
+                        if (currentRun.length() > 0) {
+                            writeHtmlSpan(writer, currentStyle, currentRun.toString());
+                            currentRun.setLength(0);
+                            currentStyle = null;
+                        }
+                        writer.write(' ');
+                        continue;
+                    }
+
+                    char ch = ea.ucs4;
+                    if (ch == 0 || ch == 0xFF) {
+                        if (currentRun.length() > 0) {
+                            writeHtmlSpan(writer, currentStyle, currentRun.toString());
+                            currentRun.setLength(0);
+                            currentStyle = null;
+                        }
+                        writer.write(' ');
+                        continue;
+                    }
+
+                    String colorClass = getHtmlColorClass(ea, currentFieldEa, currentFA);
+                    boolean bold = faIsHigh(currentFA & 0xFF) || (ea.gr & GR_INTENSIFY) != 0;
+                    boolean underline = (ea.gr & GR_UNDERLINE) != 0;
+
+                    StringBuilder css = new StringBuilder();
+                    if (!colorClass.isEmpty()) css.append(colorClass).append(" ");
+                    if (bold) css.append("bold ");
+                    if (underline) css.append("underline ");
+                    String style = css.toString().trim();
+
+                    if (currentStyle == null || !currentStyle.equals(style)) {
+                        if (currentRun.length() > 0) {
+                            writeHtmlSpan(writer, currentStyle, currentRun.toString());
+                            currentRun.setLength(0);
+                        }
+                        currentStyle = style;
+                    }
+                    currentRun.append(escapeHtml(ch));
+                }
+
+                if (currentRun.length() > 0) {
+                    writeHtmlSpan(writer, currentStyle, currentRun.toString());
+                }
+                writer.newLine();
+            }
+
+            writer.write("</pre></div>\n</body>\n</html>");
+        }
+    }
+
+    private static void writeHtmlSpan(BufferedWriter writer, String style, String content) throws IOException {
+        if (style != null && !style.isEmpty()) {
+            writer.write("<span class=\"" + style + "\">" + content + "</span>");
+        } else {
+            writer.write(content);
+        }
+    }
+
+    private static String getHtmlColorClass(ExtendedAttribute ea, ExtendedAttribute currentFieldEa, byte currentFA) {
+        int fg = ea.fg != 0 ? (ea.fg & 0xFF) : (currentFieldEa != null && currentFieldEa.fg != 0 ? (currentFieldEa.fg & 0xFF) : 0);
+        if (fg >= 0xf0 && fg <= 0xff) {
+            switch (fg - 0xf0) {
+                case 1: return "c-blue";
+                case 2: return "c-red";
+                case 3: return "c-pink";
+                case 4: return "c-green";
+                case 5: return "c-turq";
+                case 6: return "c-yellow";
+                case 7: return "c-white";
+                case 8: return "c-black";
+                case 9: return "c-deepblue";
+                case 10: return "c-orange";
+                case 11: return "c-purple";
+                case 12: return "c-palegreen";
+                case 13: return "c-paleturq";
+                case 14: return "c-mustard";
+                case 15: return "c-grey";
+            }
+        }
+        if (faIsProtected(currentFA & 0xFF)) {
+            return faIsHigh(currentFA & 0xFF) ? "c-white" : "c-turq";
+        }
+        return faIsHigh(currentFA & 0xFF) ? "c-red" : "c-green";
+    }
+
+    private static String escapeHtml(char ch) {
+        switch (ch) {
+            case '<': return "&lt;";
+            case '>': return "&gt;";
+            case '&': return "&amp;";
+            case '"': return "&quot;";
+            default: return String.valueOf(ch);
+        }
+    }
+
+    public static void exportToPng(TerminalPanel panel, File file) throws IOException {
+        int w = panel.getWidth();
+        int h = panel.getHeight();
+        if (w <= 0 || h <= 0) {
+            Dimension pref = panel.getPreferredSize();
+            w = Math.max(pref.width, 800);
+            h = Math.max(pref.height, 500);
+        }
+
+        BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
+        Graphics2D g2 = image.createGraphics();
+        panel.paint(g2);
+        g2.dispose();
+
+        ImageIO.write(image, "PNG", file);
+    }
+}
@@ -0,0 +1,279 @@
+package haus.nightmare.j3270.ui;
+
+import haus.nightmare.lib3270j.Telnet3270Client;
+
+import javax.swing.*;
+import javax.swing.border.EmptyBorder;
+import javax.swing.border.LineBorder;
+import javax.swing.border.TitledBorder;
+import java.awt.*;
+import java.io.*;
+import java.nio.charset.StandardCharsets;
+
+/**
+ * Dialog for composing and executing Host On-Demand ECL mnemonic keystroke scripts.
+ */
+public class ScriptDialog extends JDialog {
+
+    private final Telnet3270Client client;
+    private final TerminalPanel terminalPanel;
+
+    private JTextArea scriptArea;
+    private JLabel statusLabel;
+
+    public ScriptDialog(Frame parent, Telnet3270Client client, TerminalPanel terminalPanel) {
+        super(parent, "Run Keystrokes / ECL Script", false);
+        this.client = client;
+        this.terminalPanel = terminalPanel;
+        AppIcon.applyTo(this);
+
+        buildUI();
+        setSize(600, 480);
+        setLocationRelativeTo(parent);
+    }
+
+    private void buildUI() {
+        JPanel mainPanel = new JPanel(new BorderLayout(10, 10));
+        mainPanel.setBorder(new EmptyBorder(12, 14, 12, 14));
+
+        Font labelFont = ThemeManager.getUiFont();
+
+        // Header
+        JPanel topPanel = new JPanel(new BorderLayout(5, 5));
+        topPanel.setOpaque(false);
+        JLabel descLabel = new JLabel("<html>Compose keystrokes and ECL bracketed mnemonics to stream to the mainframe.<br>"
+                + "Example: <code>TSO[enter]USER[tab]PASSWORD[enter]</code> or <code>[pf3][clear]</code></html>");
+        descLabel.setFont(labelFont);
+        topPanel.add(descLabel, BorderLayout.CENTER);
+        mainPanel.add(topPanel, BorderLayout.NORTH);
+
+        // Script area
+        scriptArea = new JTextArea();
+        scriptArea.setFont(ThemeManager.getMonospacedUiFont());
+        scriptArea.setLineWrap(true);
+        scriptArea.setWrapStyleWord(false);
+        ThemeManager.styleTextArea(scriptArea);
+
+        JScrollPane scrollPane = new JScrollPane(scriptArea);
+        ThemeManager.styleScrollPane(scrollPane);
+
+        // Mnemonic helper buttons
+        JPanel tokenPanel = new JPanel(new WrapLayout(FlowLayout.LEFT, 4, 4));
+        tokenPanel.setOpaque(false);
+        tokenPanel.setBorder(ThemeManager.createTitledBorder("Insert Keystroke Token"));
+
+        String[] tokens = {
+            "[enter]", "[tab]", "[backtab]", "[clear]", "[reset]",
+            "[eraseeof]", "[eraseinput]", "[newline]", "[dup]", "[fm]",
+            "[attn]", "[sysreq]", "[cursel]",
+            "[pf1]", "[pf2]", "[pf3]", "[pf4]", "[pf5]", "[pf6]",
+            "[pf7]", "[pf8]", "[pf9]", "[pf10]", "[pf11]", "[pf12]",
+            "[pf13]", "[pf14]", "[pf15]", "[pf16]", "[pf17]", "[pf18]",
+            "[pf19]", "[pf20]", "[pf21]", "[pf22]", "[pf23]", "[pf24]",
+            "[pa1]", "[pa2]", "[pa3]", "[up]", "[down]", "[left]", "[right]", "[home]"
+        };
+
+        for (String token : tokens) {
+            JButton btn = new JButton(token);
+            btn.setFont(ThemeManager.getMonospacedUiFont(Font.PLAIN, -2));
+            ThemeManager.styleButton(btn, ThemeManager.ButtonVariant.DEFAULT);
+            btn.setFocusable(false);
+            btn.setMargin(new Insets(2, 4, 2, 4));
+            btn.addActionListener(e -> insertToken(token));
+            tokenPanel.add(btn);
+        }
+
+        JPanel centerPanel = new JPanel(new BorderLayout(6, 6));
+        centerPanel.setOpaque(false);
+        centerPanel.add(scrollPane, BorderLayout.CENTER);
+        centerPanel.add(tokenPanel, BorderLayout.SOUTH);
+        mainPanel.add(centerPanel, BorderLayout.CENTER);
+
+        // Bottom
+        JPanel bottomPanel = new JPanel(new BorderLayout(5, 5));
+        bottomPanel.setOpaque(false);
+
+        statusLabel = new JLabel("Ready");
+        statusLabel.setForeground(ThemeManager.getFgMuted());
+        statusLabel.setFont(labelFont);
+        bottomPanel.add(statusLabel, BorderLayout.WEST);
+
+        JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT, 6, 0));
+        buttonPanel.setOpaque(false);
+
+        JButton loadBtn = new JButton("Load Script...");
+        ThemeManager.styleButton(loadBtn, ThemeManager.ButtonVariant.DEFAULT);
+        loadBtn.setFont(labelFont);
+        loadBtn.addActionListener(e -> loadScript());
+
+        JButton saveBtn = new JButton("Save Script...");
+        ThemeManager.styleButton(saveBtn, ThemeManager.ButtonVariant.DEFAULT);
+        saveBtn.setFont(labelFont);
+        saveBtn.addActionListener(e -> saveScript());
+
+        JButton runBtn = new JButton("Execute");
+        ThemeManager.styleButton(runBtn, ThemeManager.ButtonVariant.PRIMARY);
+        runBtn.setFont(labelFont);
+        runBtn.addActionListener(e -> executeScript());
+
+        JButton closeBtn = new JButton("Close");
+        ThemeManager.styleButton(closeBtn, ThemeManager.ButtonVariant.CANCEL);
+        closeBtn.setFont(labelFont);
+        closeBtn.addActionListener(e -> dispose());
+
+        buttonPanel.add(loadBtn);
+        buttonPanel.add(saveBtn);
+        buttonPanel.add(Box.createHorizontalStrut(10));
+        buttonPanel.add(runBtn);
+        buttonPanel.add(closeBtn);
+
+        bottomPanel.add(buttonPanel, BorderLayout.EAST);
+        mainPanel.add(bottomPanel, BorderLayout.SOUTH);
+
+        setContentPane(mainPanel);
+        ThemeManager.applyThemeToWindow(this);
+    }
+
+    private void insertToken(String token) {
+        scriptArea.replaceSelection(token);
+        scriptArea.requestFocusInWindow();
+    }
+
+    private void executeScript() {
+        String script = scriptArea.getText();
+        if (script == null || script.trim().isEmpty()) {
+            statusLabel.setText("Script is empty.");
+            return;
+        }
+
+        if (client == null || !client.getConnectionState().isFullSession()) {
+            statusLabel.setText("Not connected to host.");
+            JOptionPane.showMessageDialog(this, "Connect to a 3270 session before executing scripts.",
+                    "Not Connected", JOptionPane.WARNING_MESSAGE);
+            return;
+        }
+
+        statusLabel.setText("Executing keystrokes...");
+        new Thread(() -> {
+            try {
+                // Split multi-line scripts or process sequentially
+                String cleaned = script.replace("\r\n", "\n").replace("\r", "\n");
+                String[] lines = cleaned.split("\n");
+                for (int i = 0; i < lines.length; i++) {
+                    String line = lines[i].trim();
+                    if (!line.isEmpty() && !line.startsWith("#") && !line.startsWith("//")) {
+                        client.sendKeys(line);
+                        Thread.sleep(100);
+                    }
+                }
+                SwingUtilities.invokeLater(() -> {
+                    statusLabel.setText("Script execution completed successfully.");
+                    if (terminalPanel != null) {
+                        terminalPanel.repaint();
+                    }
+                });
+            } catch (Exception ex) {
+                SwingUtilities.invokeLater(() -> {
+                    statusLabel.setText("Error executing script: " + ex.getMessage());
+                    JOptionPane.showMessageDialog(this, "Execution error: " + ex.getMessage(),
+                            "Script Error", JOptionPane.ERROR_MESSAGE);
+                });
+            }
+        }, "ScriptRunner").start();
+    }
+
+    private void loadScript() {
+        JFileChooser fc = new JFileChooser();
+        fc.setDialogTitle("Open Script File");
+        if (fc.showOpenDialog(this) == JFileChooser.APPROVE_OPTION) {
+            try {
+                byte[] bytes = java.nio.file.Files.readAllBytes(fc.getSelectedFile().toPath());
+                scriptArea.setText(new String(bytes, StandardCharsets.UTF_8));
+                statusLabel.setText("Loaded script: " + fc.getSelectedFile().getName());
+            } catch (IOException e) {
+                JOptionPane.showMessageDialog(this, "Could not open file: " + e.getMessage(),
+                        "Open Error", JOptionPane.ERROR_MESSAGE);
+            }
+        }
+    }
+
+    private void saveScript() {
+        JFileChooser fc = new JFileChooser();
+        fc.setDialogTitle("Save Script File");
+        if (fc.showSaveDialog(this) == JFileChooser.APPROVE_OPTION) {
+            try {
+                java.nio.file.Files.write(fc.getSelectedFile().toPath(),
+                        scriptArea.getText().getBytes(StandardCharsets.UTF_8));
+                statusLabel.setText("Saved script: " + fc.getSelectedFile().getName());
+            } catch (IOException e) {
+                JOptionPane.showMessageDialog(this, "Could not save file: " + e.getMessage(),
+                        "Save Error", JOptionPane.ERROR_MESSAGE);
+            }
+        }
+    }
+
+    /**
+     * FlowLayout subclass that fully supports word wrapping inside JScrollPanes / dialogs.
+     */
+    private static class WrapLayout extends FlowLayout {
+        public WrapLayout(int align, int hgap, int vgap) {
+            super(align, hgap, vgap);
+        }
+
+        @Override
+        public Dimension preferredLayoutSize(Container target) {
+            return layoutSize(target, true);
+        }
+
+        @Override
+        public Dimension minimumLayoutSize(Container target) {
+            Dimension minimum = layoutSize(target, false);
+            minimum.width -= (getHgap() + 1);
+            return minimum;
+        }
+
+        private Dimension layoutSize(Container target, boolean preferred) {
+            synchronized (target.getTreeLock()) {
+                int targetWidth = target.getWidth();
+                if (targetWidth == 0) targetWidth = Integer.MAX_VALUE;
+
+                int hgap = getHgap();
+                int vgap = getVgap();
+                Insets insets = target.getInsets();
+                int horizontalInsetsAndGap = insets.left + insets.right + (hgap * 2);
+                int maxWidth = targetWidth - horizontalInsetsAndGap;
+
+                Dimension dim = new Dimension(0, 0);
+                int rowWidth = 0;
+                int rowHeight = 0;
+
+                int nmembers = target.getComponentCount();
+                for (int i = 0; i < nmembers; i++) {
+                    Component m = target.getComponent(i);
+                    if (m.isVisible()) {
+                        Dimension d = preferred ? m.getPreferredSize() : m.getMinimumSize();
+                        if (rowWidth + d.width > maxWidth) {
+                            addRow(dim, rowWidth, rowHeight);
+                            rowWidth = 0;
+                            rowHeight = 0;
+                        }
+                        if (rowWidth != 0) rowWidth += hgap;
+                        rowWidth += d.width;
+                        rowHeight = Math.max(rowHeight, d.height);
+                    }
+                }
+                addRow(dim, rowWidth, rowHeight);
+
+                dim.width += horizontalInsetsAndGap;
+                dim.height += insets.top + insets.bottom + vgap * 2;
+                return dim;
+            }
+        }
+
+        private void addRow(Dimension dim, int rowWidth, int rowHeight) {
+            dim.width = Math.max(dim.width, rowWidth);
+            if (dim.height > 0) dim.height += getVgap();
+            dim.height += rowHeight;
+        }
+    }
+}
@@ -0,0 +1,391 @@
+package haus.nightmare.j3270.ui;
+
+import haus.nightmare.lib3270j.ConnectionState;
+import haus.nightmare.lib3270j.Telnet3270Client;
+import haus.nightmare.lib3270j.ecl.ECLConstants;
+import haus.nightmare.lib3270j.screen.ScreenBuffer;
+
+import javax.swing.*;
+import java.awt.*;
+
+/**
+ * Status bar displaying connection state, cursor position, timing, and lock status.
+ * Equivalent to the OIA (Operator Information Area) on a real 3270 terminal.
+ */
+public class StatusBar extends JPanel {
+
+    private final JLabel connectionStatus;
+    private final JLabel tlsStatus;
+    private final JLabel luName;
+    private final JLabel lockStatus;
+    private final JLabel insertStatus;
+    private final JLabel aplStatus;
+    private final JLabel fieldTypeStatus;
+    private final JLabel docModeStatus;
+    private final JLabel wordWrapStatus;
+    private final JLabel codePageInfo;
+    private final JLabel modelInfo;
+    private final JLabel cursorPosition;
+
+    private Telnet3270Client client;
+    private TerminalPanel terminalPanel;
+
+    public StatusBar() {
+        setLayout(new BoxLayout(this, BoxLayout.X_AXIS));
+        setBackground(ThemeManager.getStatusBarBg());
+        setBorder(BorderFactory.createMatteBorder(1, 0, 0, 0, ThemeManager.getStatusBarBorder()));
+
+        Font oiaFont = ThemeManager.getMonospacedUiFont();
+        updateBarHeight(oiaFont);
+
+        connectionStatus = createLabel("Not Connected", oiaFont, ThemeManager.getOiaFgDim());
+        tlsStatus = createLabel("", oiaFont, ThemeManager.getOiaFgNormal());
+        luName = createLabel("", oiaFont, ThemeManager.getOiaFgNormal());
+        lockStatus = createLabel("", oiaFont, ThemeManager.getOiaInputInhibited());
+        insertStatus = createClickableLabel("", oiaFont, ThemeManager.getOiaStatusSysAvail(), "Insert Mode (^ / Insert key) - Click to toggle", () -> {
+            if (terminalPanel != null) {
+                terminalPanel.toggleInsertMode();
+            } else if (client != null) {
+                client.toggleInsert();
+                updateStatus();
+            }
+        });
+        aplStatus = createClickableLabel("", oiaFont, ThemeManager.getOiaFgAlert(), "APL Keyboard Mode (Alt+F3) - Click to toggle", () -> {
+            if (terminalPanel != null) {
+                terminalPanel.toggleAplMode();
+            } else if (client != null) {
+                client.toggleAplMode();
+                updateStatus();
+            }
+        });
+        fieldTypeStatus = createLabel("", oiaFont, ThemeManager.getOiaFgDim());
+        docModeStatus = createClickableLabel("", oiaFont, ThemeManager.getOiaStatusSysAvail(), "Entry Assist Document Mode (Alt+F1) - Click to toggle", () -> {
+            if (terminalPanel != null) {
+                terminalPanel.toggleDocMode();
+            } else if (client != null) {
+                client.toggleDocMode();
+                updateStatus();
+            }
+        });
+        wordWrapStatus = createClickableLabel("", oiaFont, ThemeManager.getOiaStatusSysAvail(), "Entry Assist Word Wrap (Alt+F2) - Click to toggle", () -> {
+            if (terminalPanel != null) {
+                terminalPanel.toggleWordWrap();
+            } else if (client != null) {
+                client.toggleWordWrap();
+                updateStatus();
+            }
+        });
+        codePageInfo = createLabel("", oiaFont, ThemeManager.getOiaFgDim());
+        modelInfo = createLabel("", oiaFont, ThemeManager.getOiaFgDim());
+        cursorPosition = createLabel("001/001 [0000]", oiaFont, ThemeManager.getOiaFgNormal());
+
+        add(Box.createHorizontalStrut(6));
+        add(connectionStatus);
+        add(Box.createHorizontalStrut(10));
+        add(tlsStatus);
+        add(Box.createHorizontalStrut(10));
+        add(luName);
+        add(Box.createHorizontalStrut(12));
+        add(lockStatus);
+        add(Box.createHorizontalStrut(8));
+        add(insertStatus);
+        add(Box.createHorizontalStrut(8));
+        add(aplStatus);
+        add(Box.createHorizontalStrut(10));
+        add(fieldTypeStatus);
+        add(Box.createHorizontalGlue());
+        add(docModeStatus);
+        add(Box.createHorizontalStrut(8));
+        add(wordWrapStatus);
+        add(Box.createHorizontalStrut(12));
+        add(codePageInfo);
+        add(Box.createHorizontalStrut(12));
+        add(modelInfo);
+        add(Box.createHorizontalStrut(12));
+        add(cursorPosition);
+        add(Box.createHorizontalStrut(6));
+    }
+
+    private JLabel createLabel(String text, Font font, Color fg) {
+        JLabel label = new JLabel(text);
+        label.setFont(font);
+        label.setForeground(fg);
+        return label;
+    }
+
+    private JLabel createClickableLabel(String text, Font font, Color fg, String tooltip, Runnable onClick) {
+        JLabel label = new JLabel(text);
+        label.setFont(font);
+        label.setForeground(fg);
+        label.setToolTipText(tooltip);
+        label.setCursor(java.awt.Cursor.getPredefinedCursor(java.awt.Cursor.HAND_CURSOR));
+        label.addMouseListener(new java.awt.event.MouseAdapter() {
+            @Override
+            public void mouseClicked(java.awt.event.MouseEvent e) {
+                if (onClick != null) {
+                    onClick.run();
+                }
+            }
+        });
+        return label;
+    }
+
+    public void setClient(Telnet3270Client client, TerminalPanel terminalPanel) {
+        this.client = client;
+        this.terminalPanel = terminalPanel;
+        updateStatus();
+    }
+
+    public void applyTheme(UITheme theme) {
+        if (isDisplayable() && !SwingUtilities.isEventDispatchThread()) {
+            SwingUtilities.invokeLater(() -> applyTheme(theme));
+            return;
+        }
+        setBackground(ThemeManager.getStatusBarBg(theme));
+        setBorder(BorderFactory.createMatteBorder(1, 0, 0, 0, ThemeManager.getStatusBarBorder(theme)));
+        Font oiaFont = ThemeManager.getMonospacedUiFont();
+        updateBarHeight(oiaFont);
+        applyFontRecursively(this, oiaFont);
+        revalidate();
+        repaint();
+        updateStatus();
+    }
+
+    private void updateBarHeight(Font font) {
+        int fontHeight = 16;
+        try {
+            FontMetrics fm = getFontMetrics(font);
+            if (fm != null) fontHeight = fm.getHeight();
+        } catch (Exception ignored) {
+            fontHeight = font.getSize() + 4;
+        }
+        int barHeight = Math.max(22, fontHeight + 6);
+        setPreferredSize(new Dimension(800, barHeight));
+    }
+
+    private void applyFontRecursively(Component comp, Font font) {
+        if (comp instanceof JLabel) {
+            comp.setFont(font);
+        } else if (comp instanceof Container) {
+            for (Component child : ((Container) comp).getComponents()) {
+                applyFontRecursively(child, font);
+            }
+        }
+    }
+
+    public void updateStatus() {
+        if (isDisplayable() && !SwingUtilities.isEventDispatchThread()) {
+            SwingUtilities.invokeLater(this::updateStatus);
+            return;
+        }
+        UITheme theme = ThemeManager.getTheme();
+        if (client == null) {
+            connectionStatus.setText("Not Connected");
+            connectionStatus.setForeground(ThemeManager.getOiaFgDim(theme));
+            tlsStatus.setText("");
+            luName.setText("");
+            lockStatus.setText("");
+            lockStatus.setForeground(ThemeManager.getOiaInputInhibited(theme));
+            insertStatus.setText("");
+            aplStatus.setText("");
+            fieldTypeStatus.setText("");
+            docModeStatus.setText("");
+            wordWrapStatus.setText("");
+            codePageInfo.setText("");
+            modelInfo.setText("");
+            cursorPosition.setText("001/001");
+            cursorPosition.setForeground(ThemeManager.getOiaFgNormal(theme));
+            return;
+        }
+
+        // Connection state
+        ConnectionState state = client.getConnectionState();
+        switch (state) {
+            case NOT_CONNECTED:
+                connectionStatus.setText("Not Connected");
+                connectionStatus.setForeground(ThemeManager.getOiaFgDim(theme));
+                break;
+            case RECONNECTING:
+                connectionStatus.setText("Reconnecting...");
+                connectionStatus.setForeground(ThemeManager.getOiaFgAlert(theme));
+                break;
+            case TCP_PENDING:
+            case TELNET_PENDING:
+                connectionStatus.setText("Connecting...");
+                connectionStatus.setForeground(ThemeManager.getOiaFgAlert(theme));
+                break;
+            case CONNECTED_3270:
+                connectionStatus.setText("TN3270");
+                connectionStatus.setForeground(ThemeManager.getOiaStatusSysAvail(theme));
+                break;
+            case CONNECTED_TN3270E:
+                connectionStatus.setText("TN3270E");
+                connectionStatus.setForeground(ThemeManager.getOiaStatusSysAvail(theme));
+                break;
+            case CONNECTED_SSCP:
+                connectionStatus.setText("SSCP-LU");
+                connectionStatus.setForeground(ThemeManager.getOiaStatusSysAvail(theme));
+                break;
+            case CONNECTED_NVT:
+            case CONNECTED_NVT_CHAR:
+            case CONNECTED_E_NVT:
+                connectionStatus.setText("NVT");
+                connectionStatus.setForeground(ThemeManager.getOiaStatusSysAvail(theme));
+                break;
+            case CONNECTED_UNBOUND:
+                connectionStatus.setText("Unbound");
+                connectionStatus.setForeground(ThemeManager.getOiaAttention(theme));
+                break;
+            default:
+                connectionStatus.setText(state.name());
+                connectionStatus.setForeground(ThemeManager.getOiaFgDim(theme));
+                break;
+        }
+
+        // TLS Status
+        if (state.isConnected() && client.getConfig().isUseTls()) {
+            boolean verified = client.getConfig().isTlsVerifyCert();
+            javax.net.ssl.SSLSession session = client.getSslSession();
+            String cipher = session != null ? session.getCipherSuite() : "TLS";
+            String protocol = session != null ? session.getProtocol() : "TLS";
+            if (verified) {
+                tlsStatus.setText("🔒 TLS");
+                tlsStatus.setForeground(ThemeManager.getOiaStatusSysAvail(theme));
+                tlsStatus.setToolTipText(protocol + " / " + cipher + " (Verified)");
+            } else {
+                tlsStatus.setText("🔓 TLS (Unverified)");
+                tlsStatus.setForeground(ThemeManager.getOiaAttention(theme));
+                tlsStatus.setToolTipText(protocol + " / " + cipher + " (Verification Bypassed)");
+            }
+        } else {
+            tlsStatus.setText("");
+            tlsStatus.setToolTipText(null);
+        }
+
+        // LU Name
+        String lu = "";
+        if (client.getTelnetFSM() != null && client.getTelnetFSM().getConnectedLu() != null && !client.getTelnetFSM().getConnectedLu().isEmpty()) {
+            lu = "LU:" + client.getTelnetFSM().getConnectedLu();
+        } else if (client.getConfig().getLuName() != null && !client.getConfig().getLuName().isEmpty()) {
+            lu = "LU:" + client.getConfig().getLuName();
+        }
+        luName.setText(lu);
+        luName.setForeground(ThemeManager.getOiaStatusSysAvail(theme));
+
+        // Lock / Inhibit status
+        int inhibit = client.getOIA().getInputInhibited();
+        if (inhibit != ECLConstants.INHIBIT_NOT_INHIBITED) {
+            Color lockFg = ThemeManager.getOiaInputInhibited(theme);
+            switch (inhibit) {
+                case ECLConstants.INHIBIT_SYSTEM_LOCK:
+                    lockStatus.setText("X SYSTEM");
+                    lockFg = ThemeManager.getOiaInputInhibited(theme);
+                    break;
+                case ECLConstants.INHIBIT_COMM_CHECK:
+                    lockStatus.setText("X COMM");
+                    lockFg = ThemeManager.getOiaCommCheck(theme);
+                    break;
+                case ECLConstants.INHIBIT_NUMERIC_ONLY:
+                    lockStatus.setText("X NUM");
+                    lockFg = ThemeManager.getOiaAttention(theme);
+                    break;
+                case ECLConstants.INHIBIT_PROTECTED_FIELD:
+                    lockStatus.setText("X PROT");
+                    lockFg = ThemeManager.getOiaInputInhibited(theme);
+                    break;
+                case ECLConstants.INHIBIT_OVERFLOW:
+                    lockStatus.setText("X >");
+                    lockFg = ThemeManager.getOiaAttention(theme);
+                    break;
+                case ECLConstants.INHIBIT_OPERATOR_DUE:
+                    lockStatus.setText("X OP");
+                    lockFg = ThemeManager.getOiaAttention(theme);
+                    break;
+                default:
+                    lockStatus.setText("X LOCKED");
+                    lockFg = ThemeManager.getOiaInputInhibited(theme);
+                    break;
+            }
+            lockStatus.setForeground(lockFg);
+        } else {
+            lockStatus.setText("");
+        }
+
+        // Insert Mode Indicator
+        boolean isInsert = false;
+        if (terminalPanel != null) {
+            isInsert = terminalPanel.isInsertMode();
+        } else if (client.getInputProcessor() != null) {
+            isInsert = client.getInputProcessor().isInsertMode();
+        }
+        if (isInsert) {
+            insertStatus.setText("^ INS");
+            insertStatus.setForeground(ThemeManager.getOiaStatusSysAvail(theme));
+        } else {
+            insertStatus.setText("");
+        }
+
+        // APL Keyboard Mode Indicator
+        if (client.getInputProcessor() != null && client.getInputProcessor().isAplKeyboardMode()) {
+            aplStatus.setText("APL");
+            aplStatus.setForeground(ThemeManager.getOiaFgAlert(theme));
+        } else {
+            aplStatus.setText("");
+        }
+
+        // Entry Assist DOC Mode Indicator
+        if (client.getScreenBuffer() != null && client.getScreenBuffer().isEntryAssistDOCmode()) {
+            docModeStatus.setText("DOC");
+            docModeStatus.setForeground(ThemeManager.getOiaStatusSysAvail(theme));
+        } else {
+            docModeStatus.setText("");
+        }
+
+        // Entry Assist Word Wrap Indicator
+        if (client.getScreenBuffer() != null && client.getScreenBuffer().isEntryAssistWordWrap()) {
+            wordWrapStatus.setText("V");
+            wordWrapStatus.setForeground(ThemeManager.getOiaStatusSysAvail(theme));
+        } else {
+            wordWrapStatus.setText("");
+        }
+
+        // Field status: Numeric vs Alphanumeric
+        if (state.isFullSession() && client.getScreenBuffer().isFormatted()) {
+            if (client.getOIA().isNumeric()) {
+                fieldTypeStatus.setText("NUM");
+                fieldTypeStatus.setForeground(ThemeManager.getOiaFgWarn(theme));
+            } else {
+                fieldTypeStatus.setText("ALPHA");
+                fieldTypeStatus.setForeground(ThemeManager.getOiaFgDim(theme));
+            }
+        } else {
+            fieldTypeStatus.setText("");
+        }
+
+        // Active Code Page
+        String cp = client.getCodePage();
+        codePageInfo.setText(cp != null ? "CP" + cp : "");
+        codePageInfo.setForeground(ThemeManager.getOiaFgDim(theme));
+        codePageInfo.setToolTipText("Active EBCDIC Code Page: CP" + cp);
+
+        // Model & Dimensions info
+        ScreenBuffer sb = client.getScreenBuffer();
+        int rows = sb.getDisplayRows();
+        int cols = sb.getDisplayCols();
+        String modelName;
+        if (client.getConfig().isDynamicModel() || (client.getConfig().getModel() != null && client.getConfig().getModel().isDynamic())) {
+            modelName = "IBM-DYNAMIC [" + rows + "x" + cols + "]";
+        } else {
+            modelName = client.getConfig().getModel().name().replace('_', '-') + " [" + rows + "x" + cols + "]";
+        }
+        modelInfo.setText(modelName);
+        modelInfo.setForeground(ThemeManager.getOiaFgDim(theme));
+
+        // Cursor position and buffer address
+        int curAddr = sb.getCursorAddress();
+        int row = sb.getCursorRow() + 1;
+        int col = sb.getCursorCol() + 1;
+        cursorPosition.setText(String.format("%03d/%03d [%04d]", row, col, curAddr));
+        cursorPosition.setForeground(ThemeManager.getOiaFgNormal(theme));
+    }
+}
@@ -0,0 +1,33 @@
+package haus.nightmare.j3270.ui;
+
+/**
+ * Supported UI themes for the j3270 Java desktop interface.
+ */
+public enum UITheme {
+    DARK("Dark Mode"),
+    LIGHT("Light Mode");
+
+    private final String displayName;
+
+    UITheme(String displayName) {
+        this.displayName = displayName;
+    }
+
+    public String getDisplayName() {
+        return displayName;
+    }
+
+    @Override
+    public String toString() {
+        return displayName;
+    }
+
+    public static UITheme fromString(String name) {
+        if (name == null) return DARK;
+        String s = name.trim().toUpperCase();
+        if ("LIGHT".equals(s) || "LIGHT MODE".equals(s) || "LIGHT_MODE".equals(s)) {
+            return LIGHT;
+        }
+        return DARK;
+    }
+}
@@ -1,4 +1,4 @@
-package org.pubvm.j3270.ui;
+package haus.nightmare.j3270.ui;

 import javax.swing.*;
 import java.awt.*;
@@ -17,6 +17,7 @@ public class UntrustedCertificateDialog extends JDialog {

    public UntrustedCertificateDialog(Frame parent, String host, int port, X509Certificate[] chain, CertificateException exception) {
        super(parent, "Untrusted SSL/TLS Certificate", true);
+        AppIcon.applyTo(this);
        buildUI(host, port, chain, exception);
        pack();
        setLocationRelativeTo(parent);
@@ -26,25 +27,26 @@ public class UntrustedCertificateDialog extends JDialog {
    private void buildUI(String host, int port, X509Certificate[] chain, CertificateException exception) {
        JPanel mainPanel = new JPanel(new BorderLayout(12, 12));
        mainPanel.setBorder(BorderFactory.createEmptyBorder(16, 16, 16, 16));
-        mainPanel.setBackground(new Color(30, 30, 30));

        // Header
        JPanel headerPanel = new JPanel(new FlowLayout(FlowLayout.LEFT, 10, 0));
-        headerPanel.setBackground(new Color(30, 30, 30));
+        headerPanel.setOpaque(false);
        JLabel iconLabel = new JLabel("⚠️");
-        iconLabel.setFont(new Font(Font.SANS_SERIF, Font.PLAIN, 28));
+        iconLabel.putClientProperty("uiFontSizeDelta", 15);
+        iconLabel.setFont(ThemeManager.getUiFont(Font.PLAIN, 15));
        headerPanel.add(iconLabel);

        JPanel titleBox = new JPanel(new GridLayout(2, 1, 0, 2));
-        titleBox.setBackground(new Color(30, 30, 30));
+        titleBox.setOpaque(false);
        JLabel titleLabel = new JLabel("Untrusted SSL Certificate");
-        titleLabel.setFont(new Font(Font.SANS_SERIF, Font.BOLD, 16));
-        titleLabel.setForeground(new Color(255, 180, 80));
+        titleLabel.putClientProperty("uiFontSizeDelta", 3);
+        titleLabel.setFont(ThemeManager.getUiFont(Font.BOLD, 3));
+        titleLabel.setForeground(ThemeManager.getOiaFgWarn());
        titleBox.add(titleLabel);

        JLabel subtitleLabel = new JLabel("The server certificate for " + host + ":" + port + " could not be verified.");
-        subtitleLabel.setFont(new Font(Font.SANS_SERIF, Font.PLAIN, 12));
-        subtitleLabel.setForeground(new Color(180, 180, 180));
+        subtitleLabel.setFont(ThemeManager.getUiFont());
+        subtitleLabel.setForeground(ThemeManager.getFgMuted());
        titleBox.add(subtitleLabel);
        headerPanel.add(titleBox);
        mainPanel.add(headerPanel, BorderLayout.NORTH);
@@ -70,32 +72,29 @@ public class UntrustedCertificateDialog extends JDialog {

        JTextArea detailsArea = new JTextArea(sb.toString());
        detailsArea.setEditable(false);
-        detailsArea.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 12));
-        detailsArea.setBackground(new Color(20, 20, 20));
-        detailsArea.setForeground(new Color(210, 210, 210));
+        detailsArea.setFont(ThemeManager.getMonospacedUiFont());
+        ThemeManager.styleTextArea(detailsArea);
        detailsArea.setBorder(BorderFactory.createEmptyBorder(8, 8, 8, 8));

        JScrollPane scrollPane = new JScrollPane(detailsArea);
        scrollPane.setPreferredSize(new Dimension(520, 260));
-        scrollPane.setBorder(BorderFactory.createLineBorder(new Color(60, 60, 60)));
+        ThemeManager.styleScrollPane(scrollPane);
        mainPanel.add(scrollPane, BorderLayout.CENTER);

        // Buttons
        JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT, 10, 0));
-        buttonPanel.setBackground(new Color(30, 30, 30));
+        buttonPanel.setOpaque(false);

        JButton cancelBtn = new JButton("Cancel Connection");
-        cancelBtn.setBackground(new Color(60, 60, 60));
-        cancelBtn.setForeground(new Color(220, 220, 220));
+        ThemeManager.styleButton(cancelBtn, ThemeManager.ButtonVariant.CANCEL);
        cancelBtn.addActionListener(e -> {
            accepted = false;
            dispose();
        });

        JButton trustBtn = new JButton("Connect Anyway");
-        trustBtn.setBackground(new Color(180, 100, 40));
-        trustBtn.setForeground(Color.WHITE);
-        trustBtn.setFont(new Font(Font.SANS_SERIF, Font.BOLD, 13));
+        ThemeManager.styleButton(trustBtn, ThemeManager.ButtonVariant.DANGER);
+        trustBtn.setFont(ThemeManager.getUiFont(Font.BOLD, 0));
        trustBtn.addActionListener(e -> {
            accepted = true;
            dispose();
@@ -106,6 +105,7 @@ public class UntrustedCertificateDialog extends JDialog {
        mainPanel.add(buttonPanel, BorderLayout.SOUTH);

        setContentPane(mainPanel);
+        ThemeManager.applyThemeToWindow(this);
        getRootPane().setDefaultButton(trustBtn);
    }

@@ -1,616 +0,0 @@
-package org.pubvm.j3270;
-
-import org.lib3270j.*;
-import org.lib3270j.listener.ConnectionListener;
-import org.lib3270j.listener.ScreenUpdateListener;
-import org.pubvm.j3270.ui.ConnectDialog;
-import org.pubvm.j3270.ui.StatusBar;
-import org.pubvm.j3270.ui.TerminalPanel;
-import org.pubvm.j3270.ft.FileTransfer;
-import org.pubvm.j3270.ft.FileTransferDialog;
-
-import javax.swing.*;
-import java.awt.*;
-import java.awt.event.*;
-import java.io.IOException;
-import java.util.logging.*;
-
-/**
- * j3270 — Java TN3270 Terminal Emulator.
- * Main application class. Creates the main window with terminal display,
- * status bar, menu bar, and manages the Telnet3270Client lifecycle.
- */
-public class J3270App extends JFrame implements ConnectionListener, ScreenUpdateListener {
-
-    private static final Logger log = Logger.getLogger(J3270App.class.getName());
-
-    private Telnet3270Client client;
-    private TerminalPanel terminalPanel;
-    private StatusBar statusBar;
-    private Timer refreshTimer;
-
-    // Last connection details for reconnect
-    private String lastHost = "";
-    private int lastPort = 23;
-
-    private FileTransfer fileTransfer;
-    private final java.util.concurrent.atomic.AtomicBoolean screenUpdatePending = new java.util.concurrent.atomic.AtomicBoolean(false);
-
-    public J3270App() {
-        super("j3270 — Java TN3270 Terminal Emulator");
-        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
-        setBackground(new Color(10, 10, 10));
-
-        buildUI();
-        buildMenuBar();
-
-        pack();
-        setLocationRelativeTo(null);
-        setMinimumSize(new Dimension(640, 400));
-
-        // Status refresh timer — also ensures focus stays on terminal
-        refreshTimer = new Timer(100, e -> {
-            if (client != null) {
-                statusBar.updateStatus();
-                // Keep focus on terminal panel when window is active
-                if (isActive() && !terminalPanel.hasFocus()) {
-                    terminalPanel.requestFocusInWindow();
-                }
-            }
-        });
-        refreshTimer.start();
-
-        addWindowListener(new WindowAdapter() {
-            @Override
-            public void windowClosing(WindowEvent e) {
-                disconnect();
-                if (refreshTimer != null)
-                    refreshTimer.stop();
-                terminalPanel.dispose();
-            }
-
-            @Override
-            public void windowActivated(WindowEvent e) {
-                // When window gains focus, push to terminal panel
-                terminalPanel.requestFocusInWindow();
-            }
-        });
-    }
-
-    private void buildUI() {
-        terminalPanel = new TerminalPanel();
-
-        // Status bar
-        statusBar = new StatusBar();
-
-        // Layout
-        getContentPane().setLayout(new BorderLayout());
-        getContentPane().setBackground(new Color(10, 10, 10));
-        getContentPane().add(terminalPanel, BorderLayout.CENTER);
-        getContentPane().add(statusBar, BorderLayout.SOUTH);
-    }
-
-    private void buildMenuBar() {
-        JMenuBar menuBar = new JMenuBar();
-        menuBar.setBackground(new Color(30, 30, 30));
-        menuBar.setBorder(BorderFactory.createMatteBorder(0, 0, 1, 0, new Color(50, 50, 50)));
-
-        // File menu
-        JMenu fileMenu = createMenu("File");
-        fileMenu.add(createMenuItem("Connect...", KeyEvent.VK_N, this::showConnectDialog));
-        fileMenu.add(createMenuItem("Disconnect", KeyEvent.VK_D, this::disconnect));
-        fileMenu.addSeparator();
-        fileMenu.add(createMenuItem("Settings...", -1, this::showSettingsDialog));
-        fileMenu.addSeparator();
-        fileMenu.add(createMenuItem("Quit", KeyEvent.VK_Q, () -> {
-            disconnect();
-            System.exit(0);
-        }));
-        menuBar.add(fileMenu);
-
-        // View menu
-        JMenu viewMenu = createMenu("View");
-        viewMenu.add(createMenuItem("Font Size +", KeyEvent.VK_EQUALS, () -> adjustFontSize(2)));
-        viewMenu.add(createMenuItem("Font Size -", KeyEvent.VK_MINUS, () -> adjustFontSize(-2)));
-        viewMenu.add(createMenuItem("Reset Font", KeyEvent.VK_0, () -> {
-            terminalPanel.setFontSize(16);
-            terminalPanel.guardedPack();
-        }));
-        menuBar.add(viewMenu);
-
-        // Actions menu
-        JMenu actionsMenu = createMenu("Actions");
-        actionsMenu.add(createMenuItem("Clear", KeyEvent.VK_L, () -> {
-            if (client != null)
-                client.sendClear();
-            terminalPanel.repaint();
-        }));
-        actionsMenu.add(createMenuItem("Reset", KeyEvent.VK_R, () -> {
-            if (client != null)
-                client.reset();
-            terminalPanel.repaint();
-        }));
-        actionsMenu.addSeparator();
-        actionsMenu.add(createMenuItem("File Transfer...", KeyEvent.VK_T, this::showFileTransferDialog));
-        menuBar.add(actionsMenu);
-
-        // Help menu
-        JMenu helpMenu = createMenu("Help");
-        helpMenu.add(createMenuItem("Key Mappings", -1, this::showKeyMappings));
-        helpMenu.add(createMenuItem("About", -1, this::showAbout));
-        menuBar.add(helpMenu);
-
-        setJMenuBar(menuBar);
-    }
-
-    private JMenu createMenu(String name) {
-        JMenu menu = new JMenu(name);
-        menu.setForeground(new Color(200, 200, 200));
-        return menu;
-    }
-
-    private JMenuItem createMenuItem(String text, int acceleratorKey, Runnable action) {
-        JMenuItem item = new JMenuItem(text);
-        item.setBackground(new Color(40, 40, 40));
-        item.setForeground(new Color(200, 200, 200));
-        if (acceleratorKey > 0) {
-            item.setAccelerator(KeyStroke.getKeyStroke(acceleratorKey,
-                    Toolkit.getDefaultToolkit().getMenuShortcutKeyMaskEx()));
-        }
-        item.addActionListener(e -> action.run());
-        return item;
-    }
-
-    private void showFileTransferDialog() {
-        if (client == null) {
-            JOptionPane.showMessageDialog(this, "Connect to a host before using File Transfer.",
-                    "Not Connected", JOptionPane.WARNING_MESSAGE);
-            return;
-        }
-
-        if (fileTransfer == null) {
-            fileTransfer = new FileTransfer(client, new FileTransfer.FileTransferCallback() {
-                private ProgressMonitor monitor;
-
-                @Override
-                public void onTransferStarted() {
-                    monitor = new ProgressMonitor(J3270App.this, "Starting IND$FILE transfer...",
-                            "Waiting for host...", 0, 100);
-                    monitor.setMillisToDecideToPopup(0);
-                    monitor.setMillisToPopup(0);
-                    
-                    // Start a timer to check for manual cancellation
-                    Timer cancelCheckTimer = new Timer(500, e -> {
-                        if (monitor != null && monitor.isCanceled() && fileTransfer != null) {
-                            fileTransfer.cancel();
-                            ((Timer)e.getSource()).stop();
-                        }
-                    });
-                    cancelCheckTimer.start();
-                }
-
-                @Override
-                public void onTransferRunning() {
-                    if (monitor != null) {
-                        monitor.setNote("Transferring data...");
-                    }
-                }
-
-                @Override
-                public void onBytesTransferred(long bytes) {
-                    if (monitor != null) {
-                        monitor.setNote(bytes + " bytes transferred");
-                        // We don't always know max size in IND$FILE, so we just pulse/update note
-                    }
-                }
-
-                @Override
-                public void onTransferComplete(String message) {
-                    if (monitor != null) monitor.close();
-                    monitor = null;
-                    JOptionPane.showMessageDialog(J3270App.this, message, "Transfer Complete", JOptionPane.INFORMATION_MESSAGE);
-                }
-
-                @Override
-                public void onTransferAborted(String error) {
-                    if (monitor != null) monitor.close();
-                    monitor = null;
-                    JOptionPane.showMessageDialog(J3270App.this, "Transfer Failed: " + error, "Transfer Error", JOptionPane.ERROR_MESSAGE);
-                }
-            });
-        }
-
-        FileTransferDialog dialog = new FileTransferDialog(this, fileTransfer);
-        dialog.setVisible(true);
-    }
-
-    // ========== Connection management ==========
-
-    private void showConnectDialog() {
-        ConnectDialog dialog = new ConnectDialog(this);
-        String initialHost = lastHost != null && !lastHost.isEmpty() ? lastHost : org.pubvm.j3270.config.Settings.getAutoConnectHost();
-        int initialPort = lastPort > 0 ? lastPort : org.pubvm.j3270.config.Settings.getAutoConnectPort();
-        dialog.setInitialHost(initialHost);
-        dialog.setInitialPort(initialPort);
-        dialog.setInitialTls(org.pubvm.j3270.config.Settings.getAutoConnectTls());
-        dialog.setInitialVerifyCert(org.pubvm.j3270.config.Settings.getAutoConnectVerifyCert());
-        dialog.setVisible(true);
-
-        if (dialog.isConfirmed()) {
-            ConnectionConfig config = dialog.getConnectionConfig();
-            lastHost = config.getHost();
-            lastPort = config.getPort();
-            connect(config);
-        }
-    }
-
-    private void showSettingsDialog() {
-        org.pubvm.j3270.ui.SettingsDialog dialog = new org.pubvm.j3270.ui.SettingsDialog(this);
-        dialog.setVisible(true);
-    }
-
-    public TerminalPanel getTerminalPanel() {
-        return terminalPanel;
-    }
-
-    void connect(ConnectionConfig config) {
-        lastHost = config.getHost();
-        lastPort = config.getPort();
-
-        // Save for auto-connect
-        org.pubvm.j3270.config.Settings.setAutoConnectHost(config.getHost());
-        org.pubvm.j3270.config.Settings.setAutoConnectPort(config.getPort());
-        org.pubvm.j3270.config.Settings.setAutoConnectTls(config.isUseTls());
-        org.pubvm.j3270.config.Settings.setAutoConnectVerifyCert(config.isTlsVerifyCert());
-
-        // Disconnect existing connection
-        disconnect();
-
-        // Wire interactive certificate verifier if none configured
-        if (config.getCertificateVerifier() == null) {
-            config.setCertificateVerifier((chain, authType, exception) ->
-                org.pubvm.j3270.ui.UntrustedCertificateDialog.showPrompt(this, config.getHost(), config.getPort(), chain, exception)
-            );
-        }
-
-        client = new Telnet3270Client(config);
-        client.addConnectionListener(this);
-        client.addScreenUpdateListener(this);
-
-        terminalPanel.setClient(client);
-        statusBar.setClient(client);
-
-        String tlsIndicator = config.isUseTls() ? (config.isTlsVerifyCert() ? " [TLS]" : " [TLS/Unverified]") : "";
-        setTitle("j3270 — " + config.getHost() + ":" + config.getPort() + tlsIndicator);
-
-        // Resize window to match model
-        terminalPanel.guardedPack();
-
-        new Thread(() -> {
-            try {
-                client.connect();
-            } catch (IOException e) {
-                log.log(Level.WARNING, "Connection failed", e);
-                SwingUtilities.invokeLater(() -> {
-                    JOptionPane.showMessageDialog(this,
-                            "Connection failed: " + e.getMessage(),
-                            "Connection Error", JOptionPane.ERROR_MESSAGE);
-                });
-            }
-        }, "Connect-Thread").start();
-
-        // Focus the terminal panel
-        terminalPanel.requestFocusInWindow();
-    }
-
-    private void disconnect() {
-        if (client != null) {
-            if (fileTransfer != null) {
-                fileTransfer.cancel();
-                fileTransfer = null;
-            }
-            client.disconnect();
-            client = null;
-            terminalPanel.setClient(null);
-            statusBar.setClient(null);
-            terminalPanel.repaint();
-            setTitle("j3270 — Java TN3270 Terminal Emulator");
-        }
-    }
-
-    private void adjustFontSize(int delta) {
-        int current = terminalPanel.getFontSize();
-        int newSize = Math.max(8, Math.min(72, current + delta));
-        terminalPanel.setFontSize(newSize);
-        // Pack after font change — setFontSize sets the resize guard
-        // to prevent the componentResized from re-triggering autoFitFont
-        terminalPanel.guardedPack();
-    }
-
-    // ========== ConnectionListener ==========
-
-    @Override
-    public void onConnectionStateChanged(ConnectionState oldState, ConnectionState newState) {
-        log.info("Connection state: " + oldState + " -> " + newState);
-        SwingUtilities.invokeLater(() -> {
-            statusBar.updateStatus();
-            terminalPanel.repaint();
-
-            // Auto-resize and focus on first full session
-            if (newState.isFullSession() && !oldState.isFullSession()) {
-                terminalPanel.guardedPack();
-                terminalPanel.requestFocusInWindow();
-            }
-        });
-    }
-
-    @Override
-    public void onConnectionError(String message) {
-        log.warning("Connection error: " + message);
-        SwingUtilities.invokeLater(statusBar::updateStatus);
-    }
-
-    @Override
-    public void onTN3270ENegotiated(String deviceType, String deviceName) {
-        log.info("TN3270E negotiated: type=" + deviceType + " name=" + deviceName);
-        SwingUtilities.invokeLater(() -> {
-            if (deviceName != null) {
-                setTitle("j3270 — " + lastHost + ":" + lastPort + " [" + deviceName + "]");
-            }
-        });
-    }
-
-    // ========== ScreenUpdateListener ==========
-
-    @Override
-    public void onScreenUpdated() {
-        if (screenUpdatePending.compareAndSet(false, true)) {
-            SwingUtilities.invokeLater(() -> {
-                screenUpdatePending.set(false);
-                // During an active file transfer, let the CUT/DFT handler drive
-                // keyboard state.  In x3270, ft_cut_data() runs before WCC
-                // keyboard-restore is applied — the keyboard stays locked for the
-                // entire CUT transfer.
-                if (fileTransfer != null) {
-                    fileTransfer.onScreenUpdated();
-                }
-                if (client != null && (fileTransfer == null || !fileTransfer.isTransferActive())) {
-                    client.getInputProcessor().setKeyboardLocked(false);
-                }
-                terminalPanel.repaint();
-                statusBar.updateStatus();
-            });
-        }
-    }
-
-    @Override
-    public void onSoundAlarm() {
-        Toolkit.getDefaultToolkit().beep();
-    }
-
-    @Override
-    public void onScreenSizeChanged(int rows, int cols) {
-        SwingUtilities.invokeLater(() -> {
-            terminalPanel.guardedPack();
-        });
-    }
-
-    // ========== Help dialogs ==========
-
-    private void showKeyMappings() {
-        String text = "Key Mappings:\n\n" +
-                "Enter          — Send Enter (AID)\n" +
-                "F1-F12         — PF1-PF12\n" +
-                "Shift+F1-F12   — PF13-PF24\n" +
-                "Alt+1/2/3      — PA1/PA2/PA3\n" +
-                "Tab            — Tab to next field\n" +
-                "Shift+Tab      — Back-tab\n" +
-                "Arrow keys     — Cursor movement\n" +
-                "Home           — Cursor to home\n" +
-                "End            — Erase to end of field\n" +
-                "Delete         — Delete character\n" +
-                "Backspace      — Backspace\n" +
-                "Insert         — Toggle insert mode\n" +
-                "Escape         — Reset\n" +
-                "PageUp/Down    — PF7/PF8\n" +
-                "Alt+C          — Clear\n" +
-                "Alt+1/2/3      — PA1/PA2/PA3\n" +
-                "Cmd+D          — Disconnect\n" +
-                "Cmd+Q          — Quit\n" +
-                "Cmd+=/-/0      — Font size +/-/reset";
-
-        JTextArea area = new JTextArea(text);
-        area.setEditable(false);
-        area.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 13));
-        area.setBackground(new Color(30, 30, 30));
-        area.setForeground(new Color(200, 200, 200));
-        JScrollPane sp = new JScrollPane(area);
-        sp.setPreferredSize(new Dimension(360, 400));
-        JOptionPane.showMessageDialog(this, sp, "Key Mappings", JOptionPane.INFORMATION_MESSAGE);
-    }
-
-    private void showAbout() {
-        JOptionPane.showMessageDialog(this,
-                "j3270 — Java TN3270 Terminal Emulator\n\n" +
-                        "A Java reimplementation of x3270.\n" +
-                        "lib3270j v0.1.0\n\n" +
-                        "Supports: TN3270, TN3270E (RFC 2355)\n" +
-                        "Models: IBM 3278/3279 Models 2-5\n" +
-                        "Colors, Extended Attributes, Query Replies",
-                "About j3270", JOptionPane.INFORMATION_MESSAGE);
-    }
-
-    // ========== Main ==========
-
-    public static void main(String[] args) {
-        boolean debug = false;
-        boolean cliTls = false;
-        boolean cliNoVerifyCert = false;
-        Boolean cliTn3270e = null;
-        org.lib3270j.graphics.GraphicsMode cliGraphicsMode = null;
-        String configFile = null;
-        java.util.List<String> remainingArgs = new java.util.ArrayList<>();
-        for (int i = 0; i < args.length; i++) {
-            if ("--debug".equals(args[i]) || "-d".equals(args[i])) {
-                debug = true;
-            } else if ("--tls".equals(args[i]) || "--ssl".equals(args[i]) || "-s".equals(args[i])) {
-                cliTls = true;
-            } else if ("--no-verify-cert".equals(args[i]) || "--insecure".equals(args[i]) || "-k".equals(args[i])) {
-                cliNoVerifyCert = true;
-            } else if ("--no-tn3270e".equals(args[i]) || "--plain-tn3270".equals(args[i]) || "--plain".equals(args[i]) || "-P".equals(args[i]) || "-p".equals(args[i]) || "--non-e".equals(args[i])) {
-                cliTn3270e = false;
-            } else if ("--tn3270e".equals(args[i])) {
-                cliTn3270e = true;
-            } else if (args[i].startsWith("--graphics=")) {
-                cliGraphicsMode = org.lib3270j.graphics.GraphicsMode.fromString(args[i].substring(11));
-            } else if (("--graphics".equals(args[i]) || "-g".equals(args[i])) && i + 1 < args.length && !args[i + 1].startsWith("-")) {
-                cliGraphicsMode = org.lib3270j.graphics.GraphicsMode.fromString(args[++i]);
-            } else if ("--no-graphics".equals(args[i])) {
-                cliGraphicsMode = org.lib3270j.graphics.GraphicsMode.NONE;
-            } else if (("-c".equals(args[i]) || "--config".equals(args[i])) && i + 1 < args.length) {
-                configFile = args[++i];
-            } else {
-                remainingArgs.add(args[i]);
-            }
-        }
-
-        // Configure logging for application packages
-        Level logLevel = debug ? Level.ALL : Level.INFO;
-        Logger globalRoot = Logger.getLogger("");
-        for (java.util.logging.Handler h : globalRoot.getHandlers()) {
-            globalRoot.removeHandler(h);
-        }
-        globalRoot.setLevel(Level.ALL);
-
-        java.util.logging.Filter appFilter = record -> {
-            String name = record.getLoggerName();
-            return name != null && (name.startsWith("org.lib3270j") || name.startsWith("org.pubvm.j3270"));
-        };
-
-        ConsoleHandler consoleHandler = new ConsoleHandler();
-        consoleHandler.setLevel(logLevel);
-        consoleHandler.setFormatter(new SimpleFormatter());
-        consoleHandler.setFilter(appFilter);
-        globalRoot.addHandler(consoleHandler);
-
-        Logger.getLogger("org.pubvm").setLevel(logLevel);
-        Logger.getLogger("org.pubvm.j3270").setLevel(logLevel);
-        Logger.getLogger("org.lib3270j").setLevel(logLevel);
-
-        try {
-            java.util.logging.FileHandler fileHandler = new java.util.logging.FileHandler("j3270.log", 10 * 1024 * 1024, 1, false) {
-                @Override
-                public synchronized void publish(java.util.logging.LogRecord record) {
-                    super.publish(record);
-                    flush();
-                }
-            };
-            fileHandler.setLevel(Level.ALL);
-            fileHandler.setFormatter(new SimpleFormatter());
-            fileHandler.setFilter(appFilter);
-            globalRoot.addHandler(fileHandler);
-            log.info("Logging protocol trace to j3270.log (debug=" + debug + ", level=" + logLevel + ")");
-        } catch (Exception e) {
-            System.err.println("Could not create j3270.log: " + e.getMessage());
-        }
-
-        // Load INI config file if specified
-        if (configFile != null) {
-            try {
-                org.pubvm.j3270.config.Settings.loadFromIniFile(configFile);
-            } catch (Exception e) {
-                System.err.println("Failed to load config file: " + configFile);
-                System.err.println(e.getMessage());
-                System.exit(1);
-            }
-        }
-
-        // Dark look and feel
-        try {
-            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
-        } catch (Exception e) {
-            log.fine("Could not set system look and feel");
-        }
-
-        // Use native macOS menu bar if applicable
-        System.setProperty("apple.laf.useScreenMenuBar", "true");
-        System.setProperty("apple.awt.application.name", "j3270");
-
-        final boolean finalTls = cliTls;
-        final boolean finalNoVerify = cliNoVerifyCert;
-        final Boolean finalTn3270e = cliTn3270e;
-        final org.lib3270j.graphics.GraphicsMode finalGraphicsMode = cliGraphicsMode;
-
-        SwingUtilities.invokeLater(() -> {
-            J3270App app = new J3270App();
-            app.setVisible(true);
-
-            // If host:port given on command line, connect directly
-            if (!remainingArgs.isEmpty()) {
-                String hostArg = remainingArgs.get(0);
-                int port = finalTls ? 992 : 23;
-                if (remainingArgs.size() >= 2) {
-                    try {
-                        port = Integer.parseInt(remainingArgs.get(1));
-                    } catch (NumberFormatException ignored) {
-                    }
-                }
-                TerminalModel model = TerminalModel.IBM_3279_4;
-                if (remainingArgs.size() >= 3) {
-                    try {
-                        int modelNum = Integer.parseInt(remainingArgs.get(2));
-                        model = TerminalModel.forModel(modelNum, true);
-                    } catch (Exception ignored) {
-                    }
-                }
-                ConnectionConfig config = ConnectionConfig.parseHostString(hostArg, port, model);
-                if (finalTls) {
-                    config.setUseTls(true);
-                }
-                if (finalNoVerify) {
-                    config.setTlsVerifyCert(false);
-                }
-                if (finalTn3270e != null) {
-                    config.setTn3270eEnabled(finalTn3270e);
-                }
-                if (finalGraphicsMode != null) {
-                    config.setGraphicsMode(finalGraphicsMode);
-                } else {
-                    config.setGraphicsMode(org.pubvm.j3270.config.Settings.getGraphicsMode());
-                }
-                app.connect(config);
-            } else {
-                org.pubvm.j3270.config.Settings.StartupBehavior behavior = org.pubvm.j3270.config.Settings
-                        .getStartupBehavior();
-                switch (behavior) {
-                    case SHOW_CONNECT:
-                        SwingUtilities.invokeLater(app::showConnectDialog);
-                        break;
-                    case AUTO_CONNECT:
-                        String host = org.pubvm.j3270.config.Settings.getAutoConnectHost();
-                        int port = org.pubvm.j3270.config.Settings.getAutoConnectPort();
-                        boolean tls = org.pubvm.j3270.config.Settings.getAutoConnectTls();
-                        boolean verify = org.pubvm.j3270.config.Settings.getAutoConnectVerifyCert();
-                        boolean tn3270e = org.pubvm.j3270.config.Settings.getAutoConnectTn3270e();
-                        if (host != null && !host.isEmpty()) {
-                            ConnectionConfig config = new ConnectionConfig(host, port, TerminalModel.IBM_3279_4, tls);
-                            config.setTlsVerifyCert(verify);
-                            config.setTn3270eEnabled(finalTn3270e != null ? finalTn3270e : tn3270e);
-                            if (finalGraphicsMode != null) {
-                                config.setGraphicsMode(finalGraphicsMode);
-                            } else {
-                                config.setGraphicsMode(org.pubvm.j3270.config.Settings.getGraphicsMode());
-                            }
-                            app.connect(config);
-                        } else {
-                            SwingUtilities.invokeLater(app::showConnectDialog);
-                        }
-                        break;
-                    case DO_NOTHING:
-                    default:
-                        break;
-                }
-            }
-        });
-    }
-}
@@ -1,382 +0,0 @@
-package org.pubvm.j3270.config;
-
-import java.util.prefs.Preferences;
-import java.awt.Color;
-import java.io.*;
-import java.io.PrintWriter;
-import java.util.logging.Logger;
-import java.util.logging.Level;
-
-public class Settings {
-    private static final Preferences prefs = Preferences.userNodeForPackage(Settings.class);
-    private static final Logger log = Logger.getLogger(Settings.class.getName());
-
-    public enum StartupBehavior {
-        SHOW_CONNECT,
-        DO_NOTHING,
-        AUTO_CONNECT
-    }
-
-    public static String getFontFamily() {
-        return prefs.get("fontFamily", "Monospaced");
-    }
-
-    public static void setFontFamily(String family) {
-        prefs.put("fontFamily", family);
-    }
-
-    public static int getFontSize() {
-        return prefs.getInt("fontSize", 16);
-    }
-
-    public static void setFontSize(int size) {
-        prefs.putInt("fontSize", size);
-    }
-
-    public static StartupBehavior getStartupBehavior() {
-        String behaviorStr = prefs.get("startupBehavior", StartupBehavior.SHOW_CONNECT.name());
-        try {
-            return StartupBehavior.valueOf(behaviorStr);
-        } catch (IllegalArgumentException e) {
-            return StartupBehavior.SHOW_CONNECT;
-        }
-    }
-
-    public static void setStartupBehavior(StartupBehavior behavior) {
-        prefs.put("startupBehavior", behavior.name());
-    }
-
-    public static String getAutoConnectHost() {
-        return prefs.get("autoConnectHost", "");
-    }
-
-    public static void setAutoConnectHost(String host) {
-        prefs.put("autoConnectHost", host);
-    }
-
-    public static int getAutoConnectPort() {
-        return prefs.getInt("autoConnectPort", 23);
-    }
-
-    public static void setAutoConnectPort(int port) {
-        prefs.putInt("autoConnectPort", port);
-    }
-
-    public static boolean getAutoConnectTls() {
-        return prefs.getBoolean("autoConnectTls", false);
-    }
-
-    public static void setAutoConnectTls(boolean tls) {
-        prefs.putBoolean("autoConnectTls", tls);
-    }
-
-    public static boolean getAutoConnectVerifyCert() {
-        return prefs.getBoolean("autoConnectVerifyCert", true);
-    }
-
-    public static void setAutoConnectVerifyCert(boolean verify) {
-        prefs.putBoolean("autoConnectVerifyCert", verify);
-    }
-
-    public static boolean getAutoConnectTn3270e() {
-        return prefs.getBoolean("autoConnectTn3270e", true);
-    }
-
-    public static void setAutoConnectTn3270e(boolean tn3270e) {
-        prefs.putBoolean("autoConnectTn3270e", tn3270e);
-    }
-
-    public static org.lib3270j.graphics.GraphicsMode getGraphicsMode() {
-        String modeStr = prefs.get("graphicsMode", org.lib3270j.graphics.GraphicsMode.BOTH.name());
-        return org.lib3270j.graphics.GraphicsMode.fromString(modeStr);
-    }
-
-    public static void setGraphicsMode(org.lib3270j.graphics.GraphicsMode mode) {
-        prefs.put("graphicsMode", (mode != null ? mode : org.lib3270j.graphics.GraphicsMode.BOTH).name());
-    }
-
-    public static Color getColorOverride(int index, Color defaultColor) {
-        String hex = prefs.get("color_" + index, null);
-        try {
-            return hex != null ? Color.decode(hex) : defaultColor;
-        } catch (NumberFormatException e) {
-            return defaultColor;
-        }
-    }
-
-    public static void setColorOverride(int index, Color color) {
-        prefs.put("color_" + index, String.format("#%02x%02x%02x", color.getRed(), color.getGreen(), color.getBlue()));
-    }
-
-    public static Color getMonoColorOverride(String key, Color defaultColor) {
-        String hex = prefs.get("mono_" + key, null);
-        try {
-            return hex != null ? Color.decode(hex) : defaultColor;
-        } catch (NumberFormatException e) {
-            return defaultColor;
-        }
-    }
-
-    public static void setMonoColorOverride(String key, Color color) {
-        prefs.put("mono_" + key, String.format("#%02x%02x%02x", color.getRed(), color.getGreen(), color.getBlue()));
-    }
-
-    public static String getKeyBinding(String action, String defaultBinding) {
-        return prefs.get("key_" + action, defaultBinding);
-    }
-
-    public static void setKeyBinding(String action, String binding) {
-        prefs.put("key_" + action, binding);
-    }
-
-    /**
-     * Load settings from an INI-style configuration file.
-     * Sections: [appearance], [behavior], [colors], [keybindings]
-     *
-     * Example file:
-     * <pre>
-     * [appearance]
-     * fontFamily = IBM 3270
-     * fontSize = 18
-     *
-     * [behavior]
-     * startupBehavior = AUTO_CONNECT
-     * autoConnectHost = mainframe.example.com
-     * autoConnectPort = 23
-     *
-     * [colors]
-     * ; Host colors 0-15
-     * color_0 = #000000
-     * color_4 = #00ff00
-     * ; Monochrome / background
-     * mono_NORMAL = #32cd32
-     * mono_BACKGROUND = #0a0a0a
-     *
-     * [keybindings]
-     * ; Comma-separated for multiple bindings
-     * PF12 = F12, shift F12
-     * PF24 = UNBOUND
-     * CLEAR = alt C
-     * </pre>
-     */
-    public static void loadFromIniFile(String path) throws IOException {
-        File file = new File(path);
-        if (!file.exists()) {
-            throw new FileNotFoundException("Config file not found: " + path);
-        }
-
-        log.info("Loading configuration from: " + path);
-        String currentSection = "";
-
-        try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
-            String line;
-            int lineNum = 0;
-            while ((line = reader.readLine()) != null) {
-                lineNum++;
-                line = line.trim();
-
-                // Skip empty lines and comments
-                if (line.isEmpty() || line.startsWith(";") || line.startsWith("#")) {
-                    continue;
-                }
-
-                // Section header
-                if (line.startsWith("[") && line.endsWith("]")) {
-                    currentSection = line.substring(1, line.length() - 1).toLowerCase().trim();
-                    continue;
-                }
-
-                // Key = Value
-                int eq = line.indexOf('=');
-                if (eq < 0) {
-                    log.warning("Config line " + lineNum + ": no '=' found, skipping: " + line);
-                    continue;
-                }
-                String key = line.substring(0, eq).trim();
-                String value = line.substring(eq + 1).trim();
-
-                try {
-                    applyConfigEntry(currentSection, key, value);
-                } catch (Exception e) {
-                    log.log(Level.WARNING, "Config line " + lineNum + ": error applying " + key + "=" + value, e);
-                }
-            }
-        }
-        log.info("Configuration loaded successfully.");
-    }
-
-    // ========== Block select mode ==========
-
-    public static boolean getBlockSelectMode() {
-        return prefs.getBoolean("blockSelectMode", false);
-    }
-
-    public static void setBlockSelectMode(boolean block) {
-        prefs.putBoolean("blockSelectMode", block);
-    }
-
-    private static void applyConfigEntry(String section, String key, String value) {
-        switch (section) {
-            case "appearance":
-                switch (key) {
-                    case "fontFamily": setFontFamily(value); break;
-                    case "fontSize": setFontSize(Integer.parseInt(value)); break;
-                    default:
-                        log.warning("Unknown appearance key: " + key);
-                }
-                break;
-
-            case "behavior":
-            case "connection":
-                switch (key) {
-                    case "startupBehavior":
-                        setStartupBehavior(StartupBehavior.valueOf(value.toUpperCase()));
-                        break;
-                    case "autoConnectHost":
-                    case "host":
-                        setAutoConnectHost(value);
-                        break;
-                    case "autoConnectPort":
-                    case "port":
-                        setAutoConnectPort(Integer.parseInt(value));
-                        break;
-                    case "autoConnectTls":
-                    case "tls":
-                    case "ssl":
-                    case "useTls":
-                        setAutoConnectTls(Boolean.parseBoolean(value));
-                        break;
-                    case "autoConnectVerifyCert":
-                    case "verifyCert":
-                    case "tlsVerifyCert":
-                        setAutoConnectVerifyCert(Boolean.parseBoolean(value));
-                        break;
-                    case "autoConnectTn3270e":
-                    case "tn3270e":
-                    case "enableTn3270e":
-                        setAutoConnectTn3270e(Boolean.parseBoolean(value));
-                        break;
-                    case "blockSelectMode": setBlockSelectMode(Boolean.parseBoolean(value)); break;
-                    default:
-                        log.warning("Unknown behavior/connection key: " + key);
-                }
-                break;
-
-            case "colors":
-                if (key.startsWith("color_")) {
-                    int index = Integer.parseInt(key.substring(6));
-                    setColorOverride(index, Color.decode(value));
-                } else if (key.startsWith("mono_")) {
-                    String monoKey = key.substring(5);
-                    setMonoColorOverride(monoKey, Color.decode(value));
-                } else {
-                    log.warning("Unknown colors key: " + key);
-                }
-                break;
-
-            case "keybindings":
-                setKeyBinding(key, value);
-                break;
-
-            case "graphics":
-                if ("graphicsMode".equalsIgnoreCase(key) || "mode".equalsIgnoreCase(key)) {
-                    setGraphicsMode(org.lib3270j.graphics.GraphicsMode.fromString(value));
-                } else {
-                    log.warning("Unknown graphics key: " + key);
-                }
-                break;
-
-            default:
-                // Allow bare keys outside any section — treat as raw prefs
-                log.fine("Setting raw preference: " + key + " = " + value);
-                prefs.put(key, value);
-                break;
-        }
-    }
-
-    // ========== Export to INI ==========
-
-    /**
-     * Export the current configuration to an INI-style file.
-     * Writes all settings including appearance, behavior, colors, and keybindings.
-     */
-    public static void exportToIniFile(String path) throws IOException {
-        try (PrintWriter w = new PrintWriter(new BufferedWriter(new FileWriter(path)))) {
-            w.println("; j3270 Configuration File");
-            w.println("; Exported on " + new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new java.util.Date()));
-            w.println("; Load with: java -jar j3270.jar -c " + new File(path).getName());
-            w.println();
-
-            // [appearance]
-            w.println("[appearance]");
-            w.println("fontFamily = " + getFontFamily());
-            w.println("fontSize = " + getFontSize());
-            w.println();
-
-            // [behavior]
-            w.println("[behavior]");
-            w.println("startupBehavior = " + getStartupBehavior().name());
-            String acHost = getAutoConnectHost();
-            if (acHost != null && !acHost.isEmpty()) {
-                w.println("autoConnectHost = " + acHost);
-                w.println("autoConnectPort = " + getAutoConnectPort());
-                w.println("autoConnectTls = " + getAutoConnectTls());
-                w.println("autoConnectVerifyCert = " + getAutoConnectVerifyCert());
-                w.println("autoConnectTn3270e = " + getAutoConnectTn3270e());
-            }
-            w.println("blockSelectMode = " + getBlockSelectMode());
-            w.println();
-
-            // [graphics]
-            w.println("[graphics]");
-            w.println("graphicsMode = " + getGraphicsMode().name());
-            w.println();
-
-            // [colors]
-            w.println("[colors]");
-            // Host colors 0-15
-            for (int i = 0; i < 16; i++) {
-                String hex = prefs.get("color_" + i, null);
-                if (hex != null) {
-                    w.println("color_" + i + " = " + hex);
-                }
-            }
-            // Mono colors
-            String[] monoKeys = {"NORMAL", "INTENSIFY", "PROTECTED", "PROTECTED_HIGH", "BACKGROUND"};
-            for (String mk : monoKeys) {
-                String hex = prefs.get("mono_" + mk, null);
-                if (hex != null) {
-                    w.println("mono_" + mk + " = " + hex);
-                }
-            }
-            w.println();
-
-            // [keybindings]
-            w.println("[keybindings]");
-            // Navigation keys
-            String[] navActions = {"ENTER", "TAB", "shift TAB", "UP", "DOWN", "LEFT", "RIGHT",
-                "HOME", "END", "PAGE_UP", "PAGE_DOWN", "ESCAPE", "INSERT", "DELETE", "BACK_SPACE", "CLEAR"};
-            for (String act : navActions) {
-                String val = prefs.get("key_" + act, null);
-                if (val != null) {
-                    w.println(act + " = " + val);
-                }
-            }
-            // PF keys
-            for (int i = 1; i <= 24; i++) {
-                String val = prefs.get("key_PF" + i, null);
-                if (val != null) {
-                    w.println("PF" + i + " = " + val);
-                }
-            }
-            // PA keys
-            for (int i = 1; i <= 3; i++) {
-                String val = prefs.get("key_PA" + i, null);
-                if (val != null) {
-                    w.println("PA" + i + " = " + val);
-                }
-            }
-        }
-        log.info("Configuration exported to: " + path);
-    }
-}
@@ -1,305 +0,0 @@
-package org.pubvm.j3270.ft;
-
-import org.lib3270j.ft.FTConfig;
-
-import javax.swing.*;
-import javax.swing.border.EmptyBorder;
-import java.awt.*;
-import java.io.File;
-
-public class FileTransferDialog extends JDialog {
-
-    private final FileTransfer coordinator;
-    private final Frame owner;
-
-    private JComboBox<FTConfig.HostType> hostTypeCombo;
-    private JRadioButton sendRadio;
-    private JRadioButton receiveRadio;
-    private JTextField localFileField;
-    private JButton browseLocalButton;
-    private JTextField hostFileField;
-
-    // Options
-    private JRadioButton asciiRadio;
-    private JRadioButton binaryRadio;
-    private JCheckBox crCheck;
-    private JCheckBox remapCheck;
-    private JCheckBox appendCheck;
-    private JCheckBox overwriteCheck;
-
-    // TSO specific
-    private JTextField recfmField;
-    private JTextField lreclField;
-    private JTextField blksizeField;
-    private JTextField spaceField;
-
-    // VM specific
-    private JTextField optionsField;
-
-    private JButton transferButton;
-    private JButton cancelButton;
-
-    public FileTransferDialog(Frame owner, FileTransfer coordinator) {
-        super(owner, "File Transfer (IND$FILE)", false); // non-modal to see progress
-        this.owner = owner;
-        this.coordinator = coordinator;
-        
-        buildUI();
-        pack();
-        setLocationRelativeTo(owner);
-    }
-
-    private void buildUI() {
-        JPanel mainPanel = new JPanel(new BorderLayout(10, 10));
-        mainPanel.setBorder(new EmptyBorder(10, 10, 10, 10));
-        mainPanel.setBackground(new Color(25, 25, 25));
-
-        // Create form panel
-        JPanel formPanel = new JPanel();
-        formPanel.setLayout(new BoxLayout(formPanel, BoxLayout.Y_AXIS));
-        formPanel.setOpaque(false);
-
-        // Host Type
-        hostTypeCombo = new JComboBox<>(FTConfig.HostType.values());
-        formPanel.add(createRow("Host Environment:", hostTypeCombo));
-
-        // Direction
-        sendRadio = new JRadioButton("Send to Host");
-        receiveRadio = new JRadioButton("Receive from Host");
-        receiveRadio.setSelected(true);
-        ButtonGroup dirGroup = new ButtonGroup();
-        dirGroup.add(sendRadio);
-        dirGroup.add(receiveRadio);
-        JPanel dirPanel = new JPanel(new FlowLayout(FlowLayout.LEFT, 0, 0));
-        dirPanel.setOpaque(false);
-        dirPanel.add(receiveRadio);
-        dirPanel.add(Box.createRigidArea(new Dimension(15, 0)));
-        dirPanel.add(sendRadio);
-        
-        // Disable append/overwrite when sending
-        sendRadio.addActionListener(e -> updateOptionStates());
-        receiveRadio.addActionListener(e -> updateOptionStates());
-
-        formPanel.add(createRow("Direction:", dirPanel));
-
-        // Local File
-        localFileField = new JTextField(20);
-        browseLocalButton = new JButton("Browse...");
-        browseLocalButton.addActionListener(e -> browseLocalFile());
-        JPanel localPanel = new JPanel(new BorderLayout(5, 0));
-        localPanel.setOpaque(false);
-        localPanel.add(localFileField, BorderLayout.CENTER);
-        localPanel.add(browseLocalButton, BorderLayout.EAST);
-        formPanel.add(createRow("Local File:", localPanel));
-
-        // Host File
-        hostFileField = new JTextField(20);
-        formPanel.add(createRow("Host File:", hostFileField));
-
-        // Mode
-        asciiRadio = new JRadioButton("ASCII");
-        asciiRadio.setSelected(true);
-        binaryRadio = new JRadioButton("Binary");
-        ButtonGroup modeGroup = new ButtonGroup();
-        modeGroup.add(asciiRadio);
-        modeGroup.add(binaryRadio);
-        JPanel modePanel = new JPanel(new FlowLayout(FlowLayout.LEFT, 0, 0));
-        modePanel.setOpaque(false);
-        modePanel.add(asciiRadio);
-        modePanel.add(Box.createRigidArea(new Dimension(15, 0)));
-        modePanel.add(binaryRadio);
-        
-        asciiRadio.addActionListener(e -> updateOptionStates());
-        binaryRadio.addActionListener(e -> updateOptionStates());
-
-        formPanel.add(createRow("Transfer Mode:", modePanel));
-
-        // Options (checkboxes)
-        crCheck = new JCheckBox("Add/Remove CR");
-        crCheck.setSelected(true);
-        remapCheck = new JCheckBox("Remap Character Set");
-        remapCheck.setSelected(true);
-        appendCheck = new JCheckBox("Append to file");
-        overwriteCheck = new JCheckBox("Overwrite existing");
-
-        JPanel optionsPanel1 = new JPanel(new FlowLayout(FlowLayout.LEFT, 0, 0));
-        optionsPanel1.setOpaque(false);
-        optionsPanel1.add(crCheck);
-        optionsPanel1.add(Box.createRigidArea(new Dimension(15, 0)));
-        optionsPanel1.add(remapCheck);
-        
-        JPanel optionsPanel2 = new JPanel(new FlowLayout(FlowLayout.LEFT, 0, 0));
-        optionsPanel2.setOpaque(false);
-        optionsPanel2.add(appendCheck);
-        optionsPanel2.add(Box.createRigidArea(new Dimension(15, 0)));
-        optionsPanel2.add(overwriteCheck);
-
-        formPanel.add(createRow("Text Options:", optionsPanel1));
-        formPanel.add(createRow("File Options:", optionsPanel2));
-
-        // Host-specific options panel (TSO dataset allocation)
-        JPanel hostOptsPanel = new JPanel(new GridLayout(2, 4, 5, 5));
-        hostOptsPanel.setOpaque(false);
-        hostOptsPanel.setBorder(BorderFactory.createTitledBorder(
-                BorderFactory.createLineBorder(new Color(60, 60, 60)),
-                "TSO Allocation Options (Send Only)"));
-        ((javax.swing.border.TitledBorder)hostOptsPanel.getBorder()).setTitleColor(new Color(180, 180, 180));
-
-        hostOptsPanel.add(new JLabel("RECFM:"));
-        recfmField = new JTextField(5);
-        hostOptsPanel.add(recfmField);
-        
-        hostOptsPanel.add(new JLabel("LRECL:"));
-        lreclField = new JTextField(5);
-        hostOptsPanel.add(lreclField);
-
-        hostOptsPanel.add(new JLabel("BLKSIZE:"));
-        blksizeField = new JTextField(5);
-        hostOptsPanel.add(blksizeField);
-
-        hostOptsPanel.add(new JLabel("SPACE:"));
-        spaceField = new JTextField(15);
-        hostOptsPanel.add(spaceField);
-
-        formPanel.add(Box.createRigidArea(new Dimension(0, 10)));
-        formPanel.add(hostOptsPanel);
-
-        // CMS options
-        JPanel vmOptsPanel = new JPanel(new BorderLayout(5, 0));
-        vmOptsPanel.setOpaque(false);
-        vmOptsPanel.setBorder(BorderFactory.createTitledBorder(
-                BorderFactory.createLineBorder(new Color(60, 60, 60)),
-                "CMS Options"));
-        ((javax.swing.border.TitledBorder)vmOptsPanel.getBorder()).setTitleColor(new Color(180, 180, 180));
-        
-        optionsField = new JTextField(20);
-        vmOptsPanel.add(new JLabel("Additional Options: "), BorderLayout.WEST);
-        vmOptsPanel.add(optionsField, BorderLayout.CENTER);
-        
-        formPanel.add(Box.createRigidArea(new Dimension(0, 10)));
-        formPanel.add(vmOptsPanel);
-
-        mainPanel.add(formPanel, BorderLayout.CENTER);
-
-        // Buttons
-        JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT));
-        buttonPanel.setOpaque(false);
-        
-        transferButton = new JButton("Start Transfer");
-        transferButton.addActionListener(e -> startTransfer());
-        
-        cancelButton = new JButton("Close");
-        cancelButton.addActionListener(e -> dispose());
-        
-        buttonPanel.add(cancelButton);
-        buttonPanel.add(transferButton);
-        
-        mainPanel.add(buttonPanel, BorderLayout.SOUTH);
-
-        setContentPane(mainPanel);
-        
-        // Theme styling for components
-        applyTheme(mainPanel);
-        
-        // Initialize state
-        updateOptionStates();
-    }
-
-    private void updateOptionStates() {
-        boolean isSend = sendRadio.isSelected();
-        boolean isAscii = asciiRadio.isSelected();
-
-        appendCheck.setEnabled(!isSend);
-        overwriteCheck.setEnabled(!isSend);
-        
-        crCheck.setEnabled(isAscii);
-        remapCheck.setEnabled(isAscii);
-        
-        recfmField.setEnabled(isSend);
-        lreclField.setEnabled(isSend);
-        blksizeField.setEnabled(isSend);
-        spaceField.setEnabled(isSend);
-    }
-
-    private JPanel createRow(String labelText, Component comp) {
-        JPanel row = new JPanel(new BorderLayout(10, 0));
-        row.setOpaque(false);
-        JLabel label = new JLabel(labelText);
-        label.setPreferredSize(new Dimension(130, 25));
-        row.add(label, BorderLayout.WEST);
-        row.add(comp, BorderLayout.CENTER);
-        row.setBorder(new EmptyBorder(0, 0, 5, 0));
-        return row;
-    }
-
-    private void browseLocalFile() {
-        JFileChooser chooser = new JFileChooser();
-        if (chooser.showOpenDialog(this) == JFileChooser.APPROVE_OPTION) {
-            localFileField.setText(chooser.getSelectedFile().getAbsolutePath());
-            
-            // Auto-fill host file if empty
-            if (hostFileField.getText().trim().isEmpty()) {
-                hostFileField.setText(chooser.getSelectedFile().getName());
-            }
-        }
-    }
-
-    private void startTransfer() {
-        if (localFileField.getText().trim().isEmpty() || hostFileField.getText().trim().isEmpty()) {
-            JOptionPane.showMessageDialog(this, "Local and Host filenames are required.",
-                    "Error", JOptionPane.ERROR_MESSAGE);
-            return;
-        }
-
-        FTConfig config = new FTConfig();
-        config.setHostType((FTConfig.HostType) hostTypeCombo.getSelectedItem());
-        config.setLocalFilename(localFileField.getText().trim());
-        config.setHostFilename(hostFileField.getText().trim());
-        config.setReceive(receiveRadio.isSelected());
-        config.setAscii(asciiRadio.isSelected());
-        config.setCrFlag(crCheck.isSelected());
-        config.setRemapFlag(remapCheck.isSelected());
-        config.setAppend(appendCheck.isSelected());
-        config.setOverwrite(overwriteCheck.isSelected());
-        
-        config.setRecfm(recfmField.getText().trim());
-        config.setLrecl(lreclField.getText().trim());
-        config.setBlksize(blksizeField.getText().trim());
-        config.setSpace(spaceField.getText().trim());
-        config.setOptions(optionsField.getText().trim());
-
-        String error = coordinator.startTransfer(config);
-        if (error != null) {
-            JOptionPane.showMessageDialog(this, error, "Transfer Error", JOptionPane.ERROR_MESSAGE);
-        } else {
-            // Success, close dialog (progress will be shown separately)
-            dispose();
-        }
-    }
-
-    private void applyTheme(Container container) {
-        Color fg = new Color(200, 200, 200);
-        Color bg = new Color(40, 40, 40);
-        for (Component c : container.getComponents()) {
-            c.setForeground(fg);
-            if (c instanceof JTextField || c instanceof JComboBox) {
-                c.setBackground(bg);
-                if (c instanceof JTextField) {
-                    ((JTextField) c).setCaretColor(fg);
-                    ((JTextField) c).setBorder(BorderFactory.createCompoundBorder(
-                            BorderFactory.createLineBorder(new Color(60, 60, 60)),
-                            new EmptyBorder(2, 5, 2, 5)));
-                }
-            } else if (c instanceof JButton) {
-                c.setBackground(new Color(50, 50, 50));
-                c.setFocusable(false);
-            } else if (c instanceof JRadioButton || c instanceof JCheckBox) {
-                ((JComponent) c).setOpaque(false);
-                c.setFocusable(false);
-            }
-            if (c instanceof Container) {
-                applyTheme((Container) c);
-            }
-        }
-    }
-}
@@ -1,263 +0,0 @@
-package org.pubvm.j3270.ui;
-
-import org.lib3270j.ConnectionConfig;
-import org.lib3270j.TerminalModel;
-
-import javax.swing.*;
-import java.awt.*;
-
-/**
- * Connection dialog for entering host, port, model, and LU name.
- */
-public class ConnectDialog extends JDialog {
-
-    private JTextField hostField;
-    private JTextField portField;
-    private JComboBox<TerminalModel> modelCombo;
-    private JComboBox<org.lib3270j.graphics.GraphicsMode> graphicsCombo;
-    private JTextField luField;
-    private JCheckBox tlsCheckBox;
-    private JCheckBox verifyCertCheckBox;
-    private JCheckBox tn3270eCheckBox;
-    private boolean confirmed;
-    private ConnectionConfig result;
-
-    public ConnectDialog(Frame parent) {
-        super(parent, "Connect to Host", true);
-        buildUI();
-        pack();
-        setLocationRelativeTo(parent);
-        setResizable(false);
-    }
-
-    private void buildUI() {
-        JPanel mainPanel = new JPanel(new GridBagLayout());
-        mainPanel.setBorder(BorderFactory.createEmptyBorder(16, 16, 16, 16));
-        mainPanel.setBackground(new Color(30, 30, 30));
-        GridBagConstraints gbc = new GridBagConstraints();
-        gbc.insets = new Insets(4, 4, 4, 4);
-        gbc.fill = GridBagConstraints.HORIZONTAL;
-
-        Font labelFont = new Font(Font.SANS_SERIF, Font.PLAIN, 14);
-        Color fg = new Color(200, 200, 200);
-
-        // Host
-        gbc.gridx = 0;
-        gbc.gridy = 0;
-        JLabel hostLabel = new JLabel("Host:");
-        hostLabel.setForeground(fg);
-        hostLabel.setFont(labelFont);
-        mainPanel.add(hostLabel, gbc);
-        gbc.gridx = 1;
-        gbc.weightx = 1.0;
-        hostField = createDarkField(20);
-        mainPanel.add(hostField, gbc);
-
-        // Port
-        gbc.gridx = 0;
-        gbc.gridy = 1;
-        gbc.weightx = 0;
-        JLabel portLabel = new JLabel("Port:");
-        portLabel.setForeground(fg);
-        portLabel.setFont(labelFont);
-        mainPanel.add(portLabel, gbc);
-        gbc.gridx = 1;
-        gbc.weightx = 1.0;
-        portField = createDarkField(6);
-        portField.setText("23");
-        mainPanel.add(portField, gbc);
-
-        // Model
-        gbc.gridx = 0;
-        gbc.gridy = 2;
-        gbc.weightx = 0;
-        JLabel modelLabel = new JLabel("Model:");
-        modelLabel.setForeground(fg);
-        modelLabel.setFont(labelFont);
-        mainPanel.add(modelLabel, gbc);
-        gbc.gridx = 1;
-        gbc.weightx = 1.0;
-        modelCombo = new JComboBox<>(TerminalModel.values());
-        modelCombo.setSelectedItem(TerminalModel.IBM_3279_4);
-        modelCombo.setBackground(new Color(45, 45, 45));
-        modelCombo.setForeground(fg);
-        modelCombo.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 13));
-        mainPanel.add(modelCombo, gbc);
-
-        // LU Name
-        gbc.gridx = 0;
-        gbc.gridy = 3;
-        gbc.weightx = 0;
-        JLabel luLabel = new JLabel("LU Name:");
-        luLabel.setForeground(fg);
-        luLabel.setFont(labelFont);
-        mainPanel.add(luLabel, gbc);
-        gbc.gridx = 1;
-        gbc.weightx = 1.0;
-        luField = createDarkField(12);
-        mainPanel.add(luField, gbc);
-
-        // Graphics Mode
-        gbc.gridx = 0;
-        gbc.gridy = 4;
-        gbc.weightx = 0;
-        JLabel graphicsLabel = new JLabel("Graphics:");
-        graphicsLabel.setForeground(fg);
-        graphicsLabel.setFont(labelFont);
-        mainPanel.add(graphicsLabel, gbc);
-        gbc.gridx = 1;
-        gbc.weightx = 1.0;
-        graphicsCombo = new JComboBox<>(org.lib3270j.graphics.GraphicsMode.values());
-        graphicsCombo.setSelectedItem(org.pubvm.j3270.config.Settings.getGraphicsMode());
-        graphicsCombo.setBackground(new Color(45, 45, 45));
-        graphicsCombo.setForeground(fg);
-        graphicsCombo.setFont(new Font(Font.SANS_SERIF, Font.PLAIN, 13));
-        mainPanel.add(graphicsCombo, gbc);
-
-        // TLS / SSL Checkbox
-        gbc.gridx = 1;
-        gbc.gridy = 5;
-        gbc.weightx = 1.0;
-        tlsCheckBox = new JCheckBox("Enable TLS/SSL");
-        tlsCheckBox.setBackground(new Color(30, 30, 30));
-        tlsCheckBox.setForeground(fg);
-        tlsCheckBox.setFont(labelFont);
-        tlsCheckBox.setFocusPainted(false);
-        tlsCheckBox.addActionListener(e -> {
-            boolean isTls = tlsCheckBox.isSelected();
-            verifyCertCheckBox.setEnabled(isTls);
-            String currentPort = portField.getText().trim();
-            if (isTls && "23".equals(currentPort)) {
-                portField.setText("992");
-            } else if (!isTls && "992".equals(currentPort)) {
-                portField.setText("23");
-            }
-        });
-        mainPanel.add(tlsCheckBox, gbc);
-
-        // Verify Certificate Checkbox
-        gbc.gridx = 1;
-        gbc.gridy = 6;
-        verifyCertCheckBox = new JCheckBox("Verify Server Certificate");
-        verifyCertCheckBox.setBackground(new Color(30, 30, 30));
-        verifyCertCheckBox.setForeground(new Color(160, 160, 160));
-        verifyCertCheckBox.setFont(new Font(Font.SANS_SERIF, Font.PLAIN, 13));
-        verifyCertCheckBox.setSelected(true);
-        verifyCertCheckBox.setEnabled(false);
-        verifyCertCheckBox.setFocusPainted(false);
-        mainPanel.add(verifyCertCheckBox, gbc);
-
-        // TN3270E Checkbox
-        gbc.gridx = 1;
-        gbc.gridy = 7;
-        tn3270eCheckBox = new JCheckBox("Enable TN3270E (Extended 3270)");
-        tn3270eCheckBox.setBackground(new Color(30, 30, 30));
-        tn3270eCheckBox.setForeground(fg);
-        tn3270eCheckBox.setFont(new Font(Font.SANS_SERIF, Font.PLAIN, 13));
-        tn3270eCheckBox.setSelected(org.pubvm.j3270.config.Settings.getAutoConnectTn3270e());
-        tn3270eCheckBox.setFocusPainted(false);
-        mainPanel.add(tn3270eCheckBox, gbc);
-
-        // Buttons
-        JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT));
-        buttonPanel.setBackground(new Color(30, 30, 30));
-
-        JButton connectBtn = new JButton("Connect");
-        connectBtn.setBackground(new Color(50, 120, 50));
-        connectBtn.setForeground(Color.WHITE);
-        connectBtn.setFont(labelFont);
-        connectBtn.addActionListener(e -> onConnect());
-
-        JButton cancelBtn = new JButton("Cancel");
-        cancelBtn.setBackground(new Color(60, 60, 60));
-        cancelBtn.setForeground(fg);
-        cancelBtn.setFont(labelFont);
-        cancelBtn.addActionListener(e -> {
-            confirmed = false;
-            dispose();
-        });
-
-        buttonPanel.add(cancelBtn);
-        buttonPanel.add(connectBtn);
-
-        gbc.gridx = 0;
-        gbc.gridy = 8;
-        gbc.gridwidth = 2;
-        mainPanel.add(buttonPanel, gbc);
-
-        setContentPane(mainPanel);
-
-        // Enter key triggers connect
-        getRootPane().setDefaultButton(connectBtn);
-    }
-
-    private JTextField createDarkField(int cols) {
-        JTextField field = new JTextField(cols);
-        field.setBackground(new Color(45, 45, 45));
-        field.setForeground(new Color(200, 200, 200));
-        field.setCaretColor(new Color(200, 200, 200));
-        field.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 14));
-        field.setBorder(BorderFactory.createCompoundBorder(
-                BorderFactory.createLineBorder(new Color(60, 60, 60)),
-                BorderFactory.createEmptyBorder(4, 6, 4, 6)));
-        return field;
-    }
-
-    private void onConnect() {
-        String host = hostField.getText().trim();
-        if (host.isEmpty()) {
-            hostField.requestFocus();
-            return;
-        }
-
-        int port;
-        try {
-            port = Integer.parseInt(portField.getText().trim());
-        } catch (NumberFormatException e) {
-            portField.requestFocus();
-            return;
-        }
-
-        result = new ConnectionConfig(host, port, (TerminalModel) modelCombo.getSelectedItem());
-        String lu = luField.getText().trim();
-        if (!lu.isEmpty()) {
-            result.setLuName(lu);
-        }
-        result.setGraphicsMode((org.lib3270j.graphics.GraphicsMode) graphicsCombo.getSelectedItem());
-        result.setUseTls(tlsCheckBox.isSelected());
-        result.setTlsVerifyCert(verifyCertCheckBox.isSelected());
-        result.setTn3270eEnabled(tn3270eCheckBox.isSelected());
-        confirmed = true;
-        dispose();
-    }
-
-    public boolean isConfirmed() {
-        return confirmed;
-    }
-
-    public ConnectionConfig getConnectionConfig() {
-        return result;
-    }
-
-    /** Set initial values. */
-    public void setInitialHost(String host) {
-        hostField.setText(host);
-    }
-
-    public void setInitialPort(int port) {
-        portField.setText(String.valueOf(port));
-    }
-
-    public void setInitialTls(boolean tls) {
-        tlsCheckBox.setSelected(tls);
-        verifyCertCheckBox.setEnabled(tls);
-    }
-
-    public void setInitialVerifyCert(boolean verify) {
-        verifyCertCheckBox.setSelected(verify);
-    }
-
-    public void setInitialTn3270e(boolean tn3270e) {
-        tn3270eCheckBox.setSelected(tn3270e);
-    }
-}
@@ -1,710 +0,0 @@
-package org.pubvm.j3270.ui;
-
-import javax.swing.*;
-
-import org.pubvm.j3270.J3270App;
-import org.pubvm.j3270.config.Settings;
-
-import java.awt.*;
-import java.awt.event.*;
-import java.util.HashMap;
-import java.util.Map;
-import javax.swing.table.DefaultTableModel;
-import javax.swing.table.DefaultTableCellRenderer;
-import javax.swing.table.JTableHeader;
-import javax.swing.border.LineBorder;
-import javax.swing.border.TitledBorder;
-
-public class SettingsDialog extends JDialog {
-
-    private final J3270App parentApp;
-
-    // Dark theme colors
-    private static final Color DARK_BG = new Color(43, 43, 43);
-    private static final Color DARK_BG_LIGHTER = new Color(55, 55, 55);
-    private static final Color DARK_FG = new Color(224, 224, 224);
-    private static final Color DARK_BORDER = new Color(70, 70, 70);
-    private static final Color DARK_SELECTION = new Color(75, 110, 175);
-    private static final Color DARK_BUTTON_BG = new Color(60, 63, 65);
-    private static final Color DARK_FIELD_BG = new Color(50, 50, 50);
-
-    // Appearance tab
-    private JComboBox<String> fontBox;
-    private JSpinner fontSizeSpinner;
-    private JComboBox<org.lib3270j.graphics.GraphicsMode> graphicsModeBox;
-
-    // Behavior tab
-    private JComboBox<Settings.StartupBehavior> startupBehaviorBox;
-    private JPanel autoConnectPanel;
-    private JTextField hostField;
-    private JTextField portField;
-    private JCheckBox blockSelectCheck;
-
-    // Advanced tab state tracking
-    private final Color[] tempHostColors = new Color[16];
-    private final Map<String, Color> tempMonoColors = new HashMap<>();
-    private final Map<String, String> tempKeyBindings = new HashMap<>();
-    private DefaultTableModel keymapModel;
-
-    public SettingsDialog(J3270App parent) {
-        super(parent, "Settings", true);
-        this.parentApp = parent;
-
-        initComponents();
-        setSize(550, 450);
-        setLocationRelativeTo(parent);
-    }
-
-    private void initComponents() {
-        JTabbedPane tabbedPane = new JTabbedPane();
-
-        tabbedPane.addTab("Appearance", createAppearancePanel());
-        tabbedPane.addTab("Behavior", createBehaviorPanel());
-        tabbedPane.addTab("Advanced", createAdvancedPanel());
-
-        JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT));
-        JButton btnExport = new JButton("Export Config...");
-        JButton btnOk = new JButton("OK");
-        JButton btnApply = new JButton("Apply");
-        JButton btnCancel = new JButton("Cancel");
-
-        btnExport.addActionListener((ActionEvent e) -> {
-            exportConfig();
-        });
-
-        btnOk.addActionListener((ActionEvent e) -> {
-            boolean success = applySettings();
-            if (success) {
-                dispose();
-            }
-        });
-
-        btnApply.addActionListener((ActionEvent e) -> {
-            applySettings();
-        });
-
-        btnCancel.addActionListener((ActionEvent e) -> {
-            dispose();
-        });
-
-        buttonPanel.add(btnExport);
-        buttonPanel.add(Box.createHorizontalStrut(20));
-        buttonPanel.add(btnApply);
-        buttonPanel.add(btnCancel);
-        buttonPanel.add(btnOk);
-
-        getContentPane().add(tabbedPane, BorderLayout.CENTER);
-        getContentPane().add(buttonPanel, BorderLayout.SOUTH);
-
-        // Apply dark theme to all components for cross-platform readability
-        applyDarkTheme(getContentPane());
-        applyDarkTheme(tabbedPane);
-        applyDarkTheme(buttonPanel);
-        getContentPane().setBackground(DARK_BG);
-    }
-
-    // ========== Dark Theme Utility ==========
-
-    /**
-     * Recursively apply dark theme to a component and all its children.
-     * Ensures the Settings dialog is readable on Windows, Linux, and macOS.
-     */
-    private void applyDarkTheme(Component comp) {
-        if (comp instanceof JTabbedPane) {
-            JTabbedPane tp = (JTabbedPane) comp;
-            tp.setBackground(DARK_BG);
-            tp.setForeground(DARK_FG);
-            for (int i = 0; i < tp.getTabCount(); i++) {
-                applyDarkTheme(tp.getComponentAt(i));
-            }
-            return;
-        }
-
-        if (comp instanceof JTable) {
-            JTable table = (JTable) comp;
-            table.setBackground(DARK_FIELD_BG);
-            table.setForeground(DARK_FG);
-            table.setSelectionBackground(DARK_SELECTION);
-            table.setSelectionForeground(Color.WHITE);
-            table.setGridColor(DARK_BORDER);
-            JTableHeader header = table.getTableHeader();
-            if (header != null) {
-                header.setBackground(DARK_BG_LIGHTER);
-                header.setForeground(DARK_FG);
-                DefaultTableCellRenderer headerRenderer = new DefaultTableCellRenderer();
-                headerRenderer.setBackground(DARK_BG_LIGHTER);
-                headerRenderer.setForeground(DARK_FG);
-                header.setDefaultRenderer(headerRenderer);
-            }
-            return;
-        }
-
-        if (comp instanceof JScrollPane) {
-            JScrollPane sp = (JScrollPane) comp;
-            sp.setBackground(DARK_BG);
-            sp.getViewport().setBackground(DARK_FIELD_BG);
-            applyDarkTheme(sp.getViewport().getView());
-            return;
-        }
-
-        if (comp instanceof JButton) {
-            JButton btn = (JButton) comp;
-            btn.setBackground(DARK_BUTTON_BG);
-            btn.setForeground(DARK_FG);
-            btn.setFocusPainted(false);
-            btn.setBorder(BorderFactory.createCompoundBorder(
-                new LineBorder(DARK_BORDER, 1),
-                BorderFactory.createEmptyBorder(3, 10, 3, 10)));
-            btn.setOpaque(true);
-            return;
-        }
-
-        if (comp instanceof JComboBox) {
-            JComboBox<?> cb = (JComboBox<?>) comp;
-            cb.setBackground(DARK_FIELD_BG);
-            cb.setForeground(DARK_FG);
-            return;
-        }
-
-        if (comp instanceof JSpinner) {
-            JSpinner sp = (JSpinner) comp;
-            sp.setBackground(DARK_FIELD_BG);
-            sp.setForeground(DARK_FG);
-            JComponent editor = sp.getEditor();
-            if (editor instanceof JSpinner.DefaultEditor) {
-                JTextField tf = ((JSpinner.DefaultEditor) editor).getTextField();
-                tf.setBackground(DARK_FIELD_BG);
-                tf.setForeground(DARK_FG);
-                tf.setCaretColor(DARK_FG);
-            }
-            return;
-        }
-
-        if (comp instanceof JTextField) {
-            JTextField tf = (JTextField) comp;
-            tf.setBackground(DARK_FIELD_BG);
-            tf.setForeground(DARK_FG);
-            tf.setCaretColor(DARK_FG);
-            return;
-        }
-
-        if (comp instanceof JCheckBox) {
-            JCheckBox cb = (JCheckBox) comp;
-            cb.setBackground(DARK_BG);
-            cb.setForeground(DARK_FG);
-            return;
-        }
-
-        if (comp instanceof JLabel) {
-            comp.setForeground(DARK_FG);
-            return;
-        }
-
-        // Generic panel / container
-        // Skip color swatch panels — their background IS the color
-        if (comp instanceof JPanel && "colorSwatch".equals(comp.getName())) {
-            return;
-        }
-        comp.setBackground(DARK_BG);
-        comp.setForeground(DARK_FG);
-
-        if (comp instanceof JPanel) {
-            JPanel panel = (JPanel) comp;
-            // Style titled borders
-            if (panel.getBorder() instanceof TitledBorder) {
-                TitledBorder tb = (TitledBorder) panel.getBorder();
-                tb.setTitleColor(DARK_FG);
-            }
-        }
-
-        if (comp instanceof Container) {
-            for (Component child : ((Container) comp).getComponents()) {
-                applyDarkTheme(child);
-            }
-        }
-    }
-
-    // ========== Tab Panels ==========
-
-    private JPanel createAppearancePanel() {
-        JPanel panel = new JPanel(new GridBagLayout());
-        GridBagConstraints gbc = new GridBagConstraints();
-        gbc.insets = new Insets(10, 10, 10, 10);
-        gbc.anchor = GridBagConstraints.WEST;
-
-        // Font family
-        gbc.gridx = 0;
-        gbc.gridy = 0;
-        JLabel fontLabel = new JLabel("Terminal Font:");
-        panel.add(fontLabel, gbc);
-
-        String[] fonts = GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames();
-        fontBox = new JComboBox<>(fonts);
-        // Find default
-        String currentFont = Settings.getFontFamily();
-        for (int i = 0; i < fonts.length; i++) {
-            if (fonts[i].equalsIgnoreCase(currentFont)) {
-                fontBox.setSelectedIndex(i);
-                break;
-            }
-        }
-        gbc.gridx = 1;
-        gbc.fill = GridBagConstraints.HORIZONTAL;
-        panel.add(fontBox, gbc);
-
-        // Font size
-        gbc.gridx = 0;
-        gbc.gridy = 1;
-        gbc.fill = GridBagConstraints.NONE;
-        JLabel sizeLabel = new JLabel("Font Size:");
-        panel.add(sizeLabel, gbc);
-
-        SpinnerNumberModel sizeModel = new SpinnerNumberModel(Settings.getFontSize(), 8, 72, 1);
-        fontSizeSpinner = new JSpinner(sizeModel);
-        gbc.gridx = 1;
-        gbc.fill = GridBagConstraints.HORIZONTAL;
-        panel.add(fontSizeSpinner, gbc);
-
-        // Graphics Mode
-        gbc.gridx = 0;
-        gbc.gridy = 2;
-        gbc.fill = GridBagConstraints.NONE;
-        JLabel graphicsLabel = new JLabel("Graphics Mode:");
-        panel.add(graphicsLabel, gbc);
-
-        graphicsModeBox = new JComboBox<>(org.lib3270j.graphics.GraphicsMode.values());
-        graphicsModeBox.setSelectedItem(Settings.getGraphicsMode());
-        gbc.gridx = 1;
-        gbc.fill = GridBagConstraints.HORIZONTAL;
-        panel.add(graphicsModeBox, gbc);
-
-        // Fill remaining space
-        gbc.gridy = 3;
-        gbc.weighty = 1.0;
-        panel.add(Box.createGlue(), gbc);
-
-        return panel;
-    }
-
-    private JPanel createBehaviorPanel() {
-        JPanel panel = new JPanel(new GridBagLayout());
-        GridBagConstraints gbc = new GridBagConstraints();
-        gbc.insets = new Insets(10, 10, 10, 10);
-        gbc.anchor = GridBagConstraints.WEST;
-
-        gbc.gridx = 0;
-        gbc.gridy = 0;
-        JLabel actionLabel = new JLabel("Startup Action:");
-        panel.add(actionLabel, gbc);
-
-        startupBehaviorBox = new JComboBox<>(Settings.StartupBehavior.values());
-        startupBehaviorBox.setSelectedItem(Settings.getStartupBehavior());
-        gbc.gridx = 1;
-        gbc.fill = GridBagConstraints.HORIZONTAL;
-        panel.add(startupBehaviorBox, gbc);
-
-        // Auto-connect panel
-        autoConnectPanel = new JPanel(new GridBagLayout());
-        GridBagConstraints acGbc = new GridBagConstraints();
-        acGbc.insets = new Insets(5, 5, 5, 5);
-        acGbc.anchor = GridBagConstraints.WEST;
-
-        JLabel hostLabel = new JLabel("Host:");
-        acGbc.gridx = 0;
-        acGbc.gridy = 0;
-        autoConnectPanel.add(hostLabel, acGbc);
-
-        hostField = new JTextField(Settings.getAutoConnectHost(), 15);
-        acGbc.gridx = 1;
-        autoConnectPanel.add(hostField, acGbc);
-
-        JLabel portLabel = new JLabel("Port:");
-        acGbc.gridx = 2;
-        autoConnectPanel.add(portLabel, acGbc);
-
-        portField = new JTextField(String.valueOf(Settings.getAutoConnectPort()), 4);
-        acGbc.gridx = 3;
-        autoConnectPanel.add(portField, acGbc);
-
-        gbc.gridx = 0;
-        gbc.gridy = 1;
-        gbc.gridwidth = 2;
-        panel.add(autoConnectPanel, gbc);
-
-        // Toggle visibility
-        startupBehaviorBox.addActionListener(e -> {
-            autoConnectPanel.setVisible(startupBehaviorBox.getSelectedItem() == Settings.StartupBehavior.AUTO_CONNECT);
-        });
-        autoConnectPanel.setVisible(Settings.getStartupBehavior() == Settings.StartupBehavior.AUTO_CONNECT);
-
-        // Block select mode checkbox
-        gbc.gridy = 2;
-        gbc.gridwidth = 2;
-        blockSelectCheck = new JCheckBox("Block selection mode (rectangular select)", Settings.getBlockSelectMode());
-        panel.add(blockSelectCheck, gbc);
-
-        // Placeholder for potentially more behavior options below
-        gbc.gridy = 3;
-        gbc.weighty = 1.0;
-        panel.add(Box.createGlue(), gbc);
-
-        return panel;
-    }
-
-    private JPanel createAdvancedPanel() {
-        JPanel panel = new JPanel(new BorderLayout());
-
-        JTabbedPane advancedTabs = new JTabbedPane();
-        advancedTabs.addTab("Colors", createColorsPanel());
-        advancedTabs.addTab("Keymap", createKeymapPanel());
-
-        panel.add(advancedTabs, BorderLayout.CENTER);
-        return panel;
-    }
-
-    private JPanel createColorsPanel() {
-        JPanel main = new JPanel(new BorderLayout());
-        
-        // Host colors grid (16 colors)
-        JPanel hostPanel = new JPanel(new GridLayout(2, 8, 5, 5));
-        hostPanel.setBorder(BorderFactory.createTitledBorder("Host Colors"));
-        
-        for (int i = 0; i < 16; i++) {
-            Color init = org.pubvm.j3270.config.Settings.getColorOverride(i, TerminalPanel.DEFAULT_HOST_COLORS[i]);
-            tempHostColors[i] = init;
-            JPanel cb = new JPanel();
-            cb.setName("colorSwatch");
-            cb.setBackground(init);
-            cb.setPreferredSize(new Dimension(30, 30));
-            cb.setBorder(new LineBorder(Color.DARK_GRAY));
-            
-            final int index = i;
-            cb.addMouseListener(new MouseAdapter() {
-                @Override
-                public void mouseClicked(MouseEvent e) {
-                    Color c = JColorChooser.showDialog(main, "Select Color " + index, tempHostColors[index]);
-                    if (c != null) {
-                        tempHostColors[index] = c;
-                        cb.setBackground(c);
-                    }
-                }
-            });
-            hostPanel.add(cb);
-        }
-
-        // Mono colors
-        JPanel monoPanel = new JPanel(new GridLayout(2, 3, 5, 5));
-        monoPanel.setBorder(BorderFactory.createTitledBorder("Monochrome / BG Colors"));
-        
-        String[] monoKeys = {"NORMAL", "INTENSIFY", "PROTECTED", "PROTECTED_HIGH", "BACKGROUND"};
-        Color[] monoDefs = {TerminalPanel.DEFAULT_MONO_NORMAL, TerminalPanel.DEFAULT_MONO_INTENSIFY, 
-            TerminalPanel.DEFAULT_MONO_PROTECTED, TerminalPanel.DEFAULT_MONO_PROTECTED_HIGH, TerminalPanel.DEFAULT_BG_COLOR};
-
-        for (int i = 0; i < monoKeys.length; i++) {
-            String mk = monoKeys[i];
-            Color init = org.pubvm.j3270.config.Settings.getMonoColorOverride(mk, monoDefs[i]);
-            tempMonoColors.put(mk, init);
-
-            JPanel p = new JPanel(new BorderLayout());
-            p.add(new JLabel(mk, SwingConstants.CENTER), BorderLayout.NORTH);
-            JPanel cb = new JPanel();
-            cb.setName("colorSwatch");
-            cb.setBackground(init);
-            cb.setPreferredSize(new Dimension(40, 40));
-            cb.setBorder(new LineBorder(Color.DARK_GRAY));
-            
-            cb.addMouseListener(new MouseAdapter() {
-                @Override
-                public void mouseClicked(MouseEvent e) {
-                    Color c = JColorChooser.showDialog(main, "Select " + mk, tempMonoColors.get(mk));
-                    if (c != null) {
-                        tempMonoColors.put(mk, c);
-                        cb.setBackground(c);
-                    }
-                }
-            });
-            p.add(cb, BorderLayout.CENTER);
-            monoPanel.add(p);
-        }
-
-        JPanel resetPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT));
-        JButton btnResetColors = new JButton("Reset to Defaults");
-        btnResetColors.addActionListener(e -> {
-            for (int i=0; i<16; i++) {
-                tempHostColors[i] = TerminalPanel.DEFAULT_HOST_COLORS[i];
-            }
-            for (int i=0; i<monoKeys.length; i++) {
-                tempMonoColors.put(monoKeys[i], monoDefs[i]);
-            }
-            // Repaint container implicitly handled if we trigger a UI update, 
-            // but for simplicity user can just close/reopen or have it refresh on save
-            JOptionPane.showMessageDialog(main, "Colors reset. Click Apply to save.");
-        });
-        resetPanel.add(btnResetColors);
-
-        main.add(hostPanel, BorderLayout.NORTH);
-        main.add(monoPanel, BorderLayout.CENTER);
-        main.add(resetPanel, BorderLayout.SOUTH);
-        
-        return main;
-    }
-
-    private JPanel createKeymapPanel() {
-        JPanel main = new JPanel(new BorderLayout());
-        
-        String[] actions = {"ENTER", "TAB", "shift TAB", "UP", "DOWN", "LEFT", "RIGHT",
-            "HOME", "END", "PAGE_UP", "PAGE_DOWN", "ESCAPE", "INSERT", "DELETE", "BACK_SPACE", "CLEAR"};
-        
-        keymapModel = new DefaultTableModel(new Object[]{"Action", "Key Binding"}, 0) {
-            @Override
-            public boolean isCellEditable(int row, int column) {
-                return false; // read only through UI editor button
-            }
-        };
-
-        // Populate table from Settings or Defaults
-        for(String act : actions) {
-            String def = act;
-            if(def.equals("PAGE_UP")) def = "PAGE_UP"; // fallback example
-            String current = org.pubvm.j3270.config.Settings.getKeyBinding(act, def);
-            tempKeyBindings.put(act, current);
-            keymapModel.addRow(new Object[]{act, current});
-        }
-        for(int i=1;i<=24;i++){
-            String defaultBinding;
-            if (i <= 12) {
-                defaultBinding = "F" + i;
-            } else {
-                defaultBinding = "shift F" + (i - 12);
-            }
-            String pf = "PF"+i;
-            String cur = org.pubvm.j3270.config.Settings.getKeyBinding(pf, defaultBinding);
-            tempKeyBindings.put(pf, cur);
-            keymapModel.addRow(new Object[]{pf, cur});
-        }
-        for(int i=1;i<=3;i++){
-            String pa = "PA"+i;
-            String curPa = org.pubvm.j3270.config.Settings.getKeyBinding(pa, "alt "+i);
-            tempKeyBindings.put(pa, curPa);
-            keymapModel.addRow(new Object[]{pa, curPa});
-        }
-
-        JTable table = new JTable(keymapModel);
-        table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
-        table.setFillsViewportHeight(true);
-
-        JPanel btnPanel = new JPanel(new FlowLayout(FlowLayout.CENTER, 4, 4));
-
-        // Helper to open a key-capture dialog and return the keystroke string
-        // The callback receives the captured string.
-        java.util.function.BiConsumer<String, java.util.function.Consumer<String>> captureKey = (title, callback) -> {
-            JDialog captureDialog = new JDialog(this, title, true);
-            captureDialog.setSize(320, 100);
-            captureDialog.setLocationRelativeTo(this);
-            JLabel lbl = new JLabel("Press any key combination now...", SwingConstants.CENTER);
-            lbl.setForeground(DARK_FG);
-            captureDialog.getContentPane().setBackground(DARK_BG);
-            captureDialog.add(lbl);
-            captureDialog.addKeyListener(new KeyAdapter() {
-                @Override
-                public void keyPressed(KeyEvent e) {
-                    int code = e.getKeyCode();
-                    if (code == KeyEvent.VK_SHIFT || code == KeyEvent.VK_CONTROL ||
-                        code == KeyEvent.VK_ALT || code == KeyEvent.VK_META) return;
-                    KeyStroke ks = KeyStroke.getKeyStrokeForEvent(e);
-                    if (ks != null) {
-                        String s = ks.toString().replace("pressed ", "");
-                        callback.accept(s);
-                        captureDialog.dispose();
-                    }
-                }
-            });
-            captureDialog.setVisible(true);
-        };
-
-        // Replace Binding — sets the action to exactly one new key
-        JButton btnReplace = new JButton("Replace Binding");
-        btnReplace.addActionListener(e -> {
-            int row = table.getSelectedRow();
-            if (row < 0) return;
-            String action = (String) keymapModel.getValueAt(row, 0);
-            captureKey.accept("Press key for " + action, s -> {
-                tempKeyBindings.put(action, s);
-                keymapModel.setValueAt(s, row, 1);
-            });
-        });
-        btnPanel.add(btnReplace);
-
-        // Add Binding — appends an additional key to the existing binding(s)
-        JButton btnAdd = new JButton("Add Binding");
-        btnAdd.addActionListener(e -> {
-            int row = table.getSelectedRow();
-            if (row < 0) return;
-            String action = (String) keymapModel.getValueAt(row, 0);
-            captureKey.accept("Press additional key for " + action, s -> {
-                String existing = tempKeyBindings.get(action);
-                String updated;
-                if (existing == null || existing.isEmpty() || "UNBOUND".equals(existing)) {
-                    updated = s;
-                } else {
-                    updated = existing + ", " + s;
-                }
-                tempKeyBindings.put(action, updated);
-                keymapModel.setValueAt(updated, row, 1);
-            });
-        });
-        btnPanel.add(btnAdd);
-
-        // Remove Last — removes the last comma-separated binding entry
-        JButton btnRemoveLast = new JButton("Remove Last");
-        btnRemoveLast.addActionListener(e -> {
-            int row = table.getSelectedRow();
-            if (row < 0) return;
-            String action = (String) keymapModel.getValueAt(row, 0);
-            String existing = tempKeyBindings.get(action);
-            if (existing == null || "UNBOUND".equals(existing)) return;
-            int lastComma = existing.lastIndexOf(',');
-            String updated;
-            if (lastComma > 0) {
-                updated = existing.substring(0, lastComma).trim();
-            } else {
-                updated = "UNBOUND";
-            }
-            tempKeyBindings.put(action, updated);
-            keymapModel.setValueAt(updated, row, 1);
-        });
-        btnPanel.add(btnRemoveLast);
-
-        // Unbind All — clears all bindings for the action
-        JButton btnUnbind = new JButton("Unbind All");
-        btnUnbind.addActionListener(e -> {
-            int row = table.getSelectedRow();
-            if (row < 0) return;
-            String action = (String) keymapModel.getValueAt(row, 0);
-            tempKeyBindings.put(action, "UNBOUND");
-            keymapModel.setValueAt("UNBOUND", row, 1);
-        });
-        btnPanel.add(btnUnbind);
-
-        // Reset Keymaps — restore all defaults
-        JButton btnReset = new JButton("Reset All");
-        btnReset.addActionListener(e -> {
-            for (int row = 0; row < keymapModel.getRowCount(); row++) {
-                String action = (String) keymapModel.getValueAt(row, 0);
-                String def = getDefaultBinding(action);
-                tempKeyBindings.put(action, def);
-                keymapModel.setValueAt(def, row, 1);
-            }
-        });
-        btnPanel.add(btnReset);
-
-        main.add(new JScrollPane(table), BorderLayout.CENTER);
-        main.add(btnPanel, BorderLayout.SOUTH);
-
-        return main;
-    }
-
-    /** Returns the factory-default binding for a given action name. */
-    private String getDefaultBinding(String action) {
-        if (action.startsWith("PF")) {
-            int n = Integer.parseInt(action.substring(2));
-            return n <= 12 ? "F" + n : "shift F" + (n - 12);
-        }
-        if (action.startsWith("PA")) return "alt " + action.substring(2);
-        if (action.equals("CLEAR")) return "alt C";
-        return action; // nav keys default to their own name
-    }
-
-    // ========== Apply Settings ==========
-
-    private boolean applySettings() {
-        try {
-            // Apply Appearance
-            String fontFam = (String) fontBox.getSelectedItem();
-            if (fontFam != null) {
-                Settings.setFontFamily(fontFam);
-            }
-            Settings.setFontSize((Integer) fontSizeSpinner.getValue());
-            if (graphicsModeBox.getSelectedItem() != null) {
-                Settings.setGraphicsMode((org.lib3270j.graphics.GraphicsMode) graphicsModeBox.getSelectedItem());
-            }
-
-            // Apply Behavior
-            Settings.StartupBehavior behavior = (Settings.StartupBehavior) startupBehaviorBox.getSelectedItem();
-            if (behavior != null) {
-                Settings.setStartupBehavior(behavior);
-            }
-            if (behavior == Settings.StartupBehavior.AUTO_CONNECT) {
-                Settings.setAutoConnectHost(hostField.getText().trim());
-                try {
-                    Settings.setAutoConnectPort(Integer.parseInt(portField.getText().trim()));
-                } catch (NumberFormatException ignored) {
-                }
-            }
-
-            // Block select mode
-            Settings.setBlockSelectMode(blockSelectCheck.isSelected());
-
-            // Propagate visual changes to the app
-            // Save Colors
-            for (int i=0; i<16; i++) {
-                org.pubvm.j3270.config.Settings.setColorOverride(i, tempHostColors[i]);
-            }
-            for (Map.Entry<String, Color> entry : tempMonoColors.entrySet()) {
-                org.pubvm.j3270.config.Settings.setMonoColorOverride(entry.getKey(), entry.getValue());
-            }
-
-            // Save Keybindings
-            for (Map.Entry<String, String> entry : tempKeyBindings.entrySet()) {
-                org.pubvm.j3270.config.Settings.setKeyBinding(entry.getKey(), entry.getValue());
-            }
-
-            parentApp.getTerminalPanel().reloadSettings();
-
-            return true;
-        } catch (Exception e) {
-            JOptionPane.showMessageDialog(this, "Failed to completely apply settings: " + e.getMessage(), "Error",
-                    JOptionPane.ERROR_MESSAGE);
-            return false;
-        }
-    }
-
-    // ========== Export Config ==========
-
-    private void exportConfig() {
-        JFileChooser fc = new JFileChooser();
-        fc.setDialogTitle("Export Configuration");
-        fc.setSelectedFile(new java.io.File("j3270.ini"));
-        fc.setFileFilter(new javax.swing.filechooser.FileNameExtensionFilter("INI Files (*.ini)", "ini"));
-
-        int result = fc.showSaveDialog(this);
-        if (result == JFileChooser.APPROVE_OPTION) {
-            java.io.File file = fc.getSelectedFile();
-            // Ensure .ini extension
-            if (!file.getName().toLowerCase().endsWith(".ini")) {
-                file = new java.io.File(file.getAbsolutePath() + ".ini");
-            }
-
-            // Confirm overwrite
-            if (file.exists()) {
-                int confirm = JOptionPane.showConfirmDialog(this,
-                    "File already exists. Overwrite?", "Confirm Overwrite",
-                    JOptionPane.YES_NO_OPTION);
-                if (confirm != JOptionPane.YES_OPTION) return;
-            }
-
-            try {
-                // Apply current dialog state first so the export reflects latest changes
-                applySettings();
-                Settings.exportToIniFile(file.getAbsolutePath());
-                JOptionPane.showMessageDialog(this,
-                    "Configuration exported to:\n" + file.getAbsolutePath(),
-                    "Export Successful", JOptionPane.INFORMATION_MESSAGE);
-            } catch (Exception ex) {
-                JOptionPane.showMessageDialog(this,
-                    "Export failed: " + ex.getMessage(),
-                    "Export Error", JOptionPane.ERROR_MESSAGE);
-            }
-        }
-    }
-}
@@ -1,164 +0,0 @@
-package org.pubvm.j3270.ui;
-
-import org.lib3270j.ConnectionState;
-import org.lib3270j.Telnet3270Client;
-import org.lib3270j.screen.ScreenBuffer;
-
-import javax.swing.*;
-import java.awt.*;
-
-/**
- * Status bar displaying connection state, cursor position, timing, and lock
- * status.
- * Equivalent to the OIA (Operator Information Area) on a real 3270 terminal.
- */
-public class StatusBar extends JPanel {
-
-    private final JLabel connectionStatus;
-    private final JLabel tlsStatus;
-    private final JLabel cursorPosition;
-    private final JLabel luName;
-    private final JLabel lockStatus;
-    private final JLabel modelInfo;
-
-    private Telnet3270Client client;
-
-    // OIA colors
-    private static final Color OIA_BG = new Color(20, 20, 20);
-    private static final Color OIA_FG = new Color(50, 205, 50);
-    private static final Color OIA_DIM = new Color(80, 80, 80);
-    private static final Color OIA_ALERT = new Color(255, 80, 80);
-
-    public StatusBar() {
-        setLayout(new BoxLayout(this, BoxLayout.X_AXIS));
-        setBackground(OIA_BG);
-        setBorder(BorderFactory.createMatteBorder(1, 0, 0, 0, new Color(40, 40, 40)));
-        setPreferredSize(new Dimension(800, 22));
-
-        Font oiaFont = new Font(Font.MONOSPACED, Font.PLAIN, 12);
-
-        connectionStatus = createLabel("Not Connected", oiaFont, OIA_DIM);
-        tlsStatus = createLabel("", oiaFont, OIA_FG);
-        luName = createLabel("", oiaFont, OIA_FG);
-        lockStatus = createLabel("", oiaFont, OIA_ALERT);
-        modelInfo = createLabel("", oiaFont, OIA_DIM);
-        cursorPosition = createLabel("001/001", oiaFont, OIA_FG);
-
-        add(Box.createHorizontalStrut(6));
-        add(connectionStatus);
-        add(Box.createHorizontalStrut(10));
-        add(tlsStatus);
-        add(Box.createHorizontalStrut(12));
-        add(luName);
-        add(Box.createHorizontalStrut(12));
-        add(lockStatus);
-        add(Box.createHorizontalGlue());
-        add(modelInfo);
-        add(Box.createHorizontalStrut(12));
-        add(cursorPosition);
-        add(Box.createHorizontalStrut(6));
-    }
-
-    private JLabel createLabel(String text, Font font, Color fg) {
-        JLabel label = new JLabel(text);
-        label.setFont(font);
-        label.setForeground(fg);
-        return label;
-    }
-
-    public void setClient(Telnet3270Client client) {
-        this.client = client;
-    }
-
-    public void updateStatus() {
-        if (client == null)
-            return;
-
-        // Connection state
-        ConnectionState state = client.getConnectionState();
-        switch (state) {
-            case NOT_CONNECTED:
-                connectionStatus.setText("Not Connected");
-                connectionStatus.setForeground(OIA_DIM);
-                break;
-            case TCP_PENDING:
-            case TELNET_PENDING:
-                connectionStatus.setText("Connecting...");
-                connectionStatus.setForeground(OIA_ALERT);
-                break;
-            case CONNECTED_3270:
-                connectionStatus.setText("TN3270");
-                connectionStatus.setForeground(OIA_FG);
-                break;
-            case CONNECTED_TN3270E:
-                connectionStatus.setText("TN3270E");
-                connectionStatus.setForeground(OIA_FG);
-                break;
-            case CONNECTED_SSCP:
-                connectionStatus.setText("SSCP-LU");
-                connectionStatus.setForeground(OIA_FG);
-                break;
-            case CONNECTED_NVT:
-            case CONNECTED_NVT_CHAR:
-            case CONNECTED_E_NVT:
-                connectionStatus.setText("NVT");
-                connectionStatus.setForeground(OIA_FG);
-                break;
-            case CONNECTED_UNBOUND:
-                connectionStatus.setText("Unbound");
-                connectionStatus.setForeground(new Color(255, 255, 80));
-                break;
-            default:
-                connectionStatus.setText(state.name());
-                connectionStatus.setForeground(OIA_DIM);
-                break;
-        }
-
-        // TLS Status
-        if (state.isConnected() && client.getConfig().isUseTls()) {
-            boolean verified = client.getConfig().isTlsVerifyCert();
-            javax.net.ssl.SSLSession session = client.getSslSession();
-            String cipher = session != null ? session.getCipherSuite() : "TLS";
-            String protocol = session != null ? session.getProtocol() : "TLS";
-            if (verified) {
-                tlsStatus.setText("🔒 TLS");
-                tlsStatus.setForeground(OIA_FG);
-                tlsStatus.setToolTipText(protocol + " / " + cipher + " (Verified)");
-            } else {
-                tlsStatus.setText("🔓 TLS (Unverified)");
-                tlsStatus.setForeground(new Color(255, 180, 80));
-                tlsStatus.setToolTipText(protocol + " / " + cipher + " (Verification Bypassed)");
-            }
-        } else {
-            tlsStatus.setText("");
-            tlsStatus.setToolTipText(null);
-        }
-
-        // LU name
-        String lu = "";
-        if (client.getConnectionState().isTn3270e()) {
-            // lu would come from FSM
-        }
-        luName.setText(lu);
-
-        // Lock status
-        if (client.getInputProcessor().isKeyboardLocked()) {
-            lockStatus.setText("X SYSTEM");
-            lockStatus.setForeground(OIA_ALERT);
-        } else if (client.getInputProcessor().isInsertMode()) {
-            lockStatus.setText("INSERT");
-            lockStatus.setForeground(OIA_FG);
-        } else {
-            lockStatus.setText("");
-        }
-
-        // Model info
-        modelInfo.setText(client.getConfig().getModel().getTerminalType());
-
-        // Cursor position
-        ScreenBuffer sb = client.getScreenBuffer();
-        int row = sb.getCursorRow() + 1;
-        int col = sb.getCursorCol() + 1;
-        cursorPosition.setText(String.format("%03d/%03d", row, col));
-    }
-}
@@ -0,0 +1,146 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   viewBox="124 738 320 320"
+   width="320"
+   height="320"
+   xml:space="preserve"
+   id="svg_j3270_icon"
+   version="1.1">
+  <metadata id="metadata8">
+    <rdf:RDF>
+      <cc:Work rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <!-- Pure black background (#000000) for classic 3270 CRT terminal look -->
+  <rect x="124" y="738" width="320" height="320" fill="#000000" />
+  <g transform="matrix(1.3333333,0,0,-1.3333333,0,1122.6667)" id="g10">
+    <g transform="scale(0.1)" id="g12">
+      <g id="g14">
+        <!-- Green Terminal Screen Frame -->
+        <path
+           id="path28"
+           style="fill:none;stroke:#00ff00;stroke-width:3.75079012;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="M 1177.27,2220.71 V 1142.45 H 3084.31 V 2220.71 H 1177.27" />
+        <!-- Blue Wave / Exponential Curve -->
+        <path
+           id="path30"
+           style="fill:none;stroke:#0000ff;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1172.41,1137.58 79.1,-1.22 -0.21,-0.38 c 1.08,0 2.18,0 3.27,0 762.95,0 1464.86,417.88 1829.53,1089.21" />
+        <!-- Red Circular Arc -->
+        <path
+           id="path32"
+           style="fill:none;stroke:#ff0000;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2593.86,1620.73 -1.22,-28 -0.08,-0.08 c 0.43,-250.15 202.81,-452.72 452.3,-452.72 0.14,0 0.28,0 0.42,0 l 43.9,2.52" />
+        <!-- Yellow Smiley Head -->
+        <path
+           id="path34"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
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+        <!-- 'l' -->
+        <path
+           id="path36"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1502.21,1785.02 h 23.13 v 32.86 h -23.13 l -4.87,8.52 v 154.56 h -18.25 V 1826.4 l 4.87,-25.56 4.87,-7.3 13.38,-8.52" />
+        <path
+           id="path38"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
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+        <!-- 'i' -->
+        <path
+           id="path40"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1566.71,1785.02 h 13.39 v 32.86 h -13.39 l -4.86,8.52 v 105.88 h -18.26 V 1826.4 l 4.87,-25.56 4.87,-7.3 13.38,-8.52 m -4.86,163.08 v 32.86 h -18.26 v -32.86 h 18.26" />
+        <path
+           id="path42"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
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+        <!-- 'b' -->
+        <path
+           id="path44"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
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+        <path
+           id="path46"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
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+        <!-- '3' -->
+        <path
+           id="path48"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1722.49,1817.88 h -23.12 v -32.86 h 69.36 l 13.4,8.52 4.86,7.3 3.65,25.56 v 40.16 l -8.51,15.82 8.51,17.04 v 40.16 l -3.65,24.34 -4.86,8.52 -13.4,8.52 h -69.36 v -32.86 h 69.36 l 3.66,-8.52 v -31.64 l -3.66,-8.52 h -46.24 v -32.86 h 46.24 l 3.66,-8.52 v -31.64 l -3.66,-8.52 h -46.24" />
+        <path
+           id="path50"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
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+        <!-- '2' -->
+        <path
+           id="path52"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1808.9,1785.02 h 92.49 v 32.86 h -73.02 v 32.86 l 3.65,7.3 h 46.25 l 13.38,8.52 4.87,8.52 4.87,24.34 v 40.16 l -4.87,24.34 -4.87,8.52 -13.38,8.52 h -46.25 l -13.39,-8.52 -4.86,-8.52 -4.87,-24.34 v -24.34 h 19.47 v 24.34 l 3.65,8.52 h 46.25 l 4.86,-8.52 v -40.16 l -4.86,-8.52 h -46.25 l -13.39,-8.52 -4.86,-7.3 -4.87,-24.34 v -65.72" />
+        <path
+           id="path54"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1808.9,1785.02 h 92.49 v 32.86 h -73.02 v 32.86 l 3.65,7.3 h 46.25 l 13.38,8.52 4.87,8.52 4.87,24.34 v 40.16 l -4.87,24.34 -4.87,8.52 -13.38,8.52 h -46.25 l -13.39,-8.52 -4.86,-8.52 -4.87,-24.34 v -24.34 h 19.47 v 24.34 l 3.65,8.52 h 46.25 l 4.86,-8.52 v -40.16 l -4.86,-8.52 h -46.25 l -13.39,-8.52 -4.86,-7.3 -4.87,-24.34 v -65.72" />
+        <!-- '7' -->
+        <path
+           id="path56"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1919.64,1980.96 h 91.28 v -65.72 l -49.9,-130.22 h -23.12 l 54.76,138.74 v 24.34 h -73.02 v 32.86" />
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+           id="path58"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1919.64,1980.96 h 91.28 v -65.72 l -49.9,-130.22 h -23.12 l 54.76,138.74 v 24.34 h -73.02 v 32.86" />
+        <!-- '0' -->
+        <path
+           id="path60"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 2047.43,1972.44 -4.87,-8.52 -3.65,-24.34 V 1826.4 l 3.65,-25.56 4.87,-7.3 14.61,-8.52 h 31.64 l 13.38,8.52 4.87,7.3 4.87,25.56 v 113.18 l -4.87,24.34 -4.87,8.52 -13.38,8.52 h -31.64 l -14.61,-8.52 m 14.61,-24.34 h 31.64 l 4.86,-8.52 V 1826.4 l -4.86,-8.52 h -31.64 l -4.88,8.52 v 113.18 l 4.88,8.52" />
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+           id="path62"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
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+        <!-- 'j' -->
+        <path
+           id="path64"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 2176.43,1948.1 v 32.86 h -18.25 v -32.86 h 18.25 m 0,-15.82 V 1769.2 l -4.87,-25.56 -4.86,-7.3 -13.39,-8.52 h -18.26 v 32.86 h 18.26 l 4.87,8.52 v 163.08 h 18.25" />
+        <path
+           id="path66"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
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+        <!-- Smile -->
+        <path
+           id="path68"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
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+        <!-- Left Eye (cyan) -->
+        <path
+           id="path70"
+           style="fill:none;stroke:#00ffff;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
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+        <!-- Right Eye (cyan) -->
+        <path
+           id="path72"
+           style="fill:none;stroke:#00ffff;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2921.23,1569.61 v -3.65 l -0.01,-0.01 c 0,-0.27 -0.01,-0.54 -0.01,-0.81 0,-18.22 14.66,-33.05 32.87,-33.26 l 0.03,0.01 c 0.28,0 0.57,-0.01 0.84,-0.01 17.29,0 31.72,13.22 33.24,30.44 l -0.02,3.64 0.02,0.02 c 0,0.27 0.01,0.54 0.01,0.81 0,18.37 -14.9,33.28 -33.28,33.28 -0.26,0 -0.54,-0.01 -0.81,-0.02 l -0.02,-0.03 c -17.14,-0.18 -31.36,-13.34 -32.86,-30.42" />
+        <!-- Nose -->
+        <path
+           id="path74"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2892.03,1528.23 -29.21,-20.68" />
+        <path
+           id="path76"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2862.82,1507.55 h 32.86" />
+      </g>
+    </g>
+  </g>
+</svg>
@@ -0,0 +1,146 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   viewBox="144 814 280 169"
+   width="280"
+   height="169"
+   xml:space="preserve"
+   id="svg_lib3270j_cropped"
+   version="1.1">
+  <metadata id="metadata8">
+    <rdf:RDF>
+      <cc:Work rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <!-- Pure black background (#000000) for classic 3270 CRT terminal look -->
+  <rect x="144" y="814" width="280" height="169" fill="#000000" />
+  <g transform="matrix(1.3333333,0,0,-1.3333333,0,1122.6667)" id="g10">
+    <g transform="scale(0.1)" id="g12">
+      <g id="g14">
+        <!-- Green Terminal Screen Frame -->
+        <path
+           id="path28"
+           style="fill:none;stroke:#00ff00;stroke-width:3.75079012;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="M 1177.27,2220.71 V 1142.45 H 3084.31 V 2220.71 H 1177.27" />
+        <!-- Blue Wave / Exponential Curve -->
+        <path
+           id="path30"
+           style="fill:none;stroke:#0000ff;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
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+        <!-- Red Circular Arc -->
+        <path
+           id="path32"
+           style="fill:none;stroke:#ff0000;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2593.86,1620.73 -1.22,-28 -0.08,-0.08 c 0.43,-250.15 202.81,-452.72 452.3,-452.72 0.14,0 0.28,0 0.42,0 l 43.9,2.52" />
+        <!-- Yellow Smiley Head -->
+        <path
+           id="path34"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
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+        <!-- 'l' -->
+        <path
+           id="path36"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
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+        <path
+           id="path38"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1502.21,1785.02 h 23.13 v 32.86 h -23.13 l -4.87,8.52 v 154.56 h -18.25 V 1826.4 l 4.87,-25.56 4.87,-7.3 13.38,-8.52" />
+        <!-- 'i' -->
+        <path
+           id="path40"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1566.71,1785.02 h 13.39 v 32.86 h -13.39 l -4.86,8.52 v 105.88 h -18.26 V 1826.4 l 4.87,-25.56 4.87,-7.3 13.38,-8.52 m -4.86,163.08 v 32.86 h -18.26 v -32.86 h 18.26" />
+        <path
+           id="path42"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1566.71,1785.02 h 13.39 v 32.86 h -13.39 l -4.86,8.52 v 105.88 h -18.26 V 1826.4 l 4.87,-25.56 4.87,-7.3 13.38,-8.52 m -4.86,163.08 v 32.86 h -18.26 v -32.86 h 18.26" />
+        <!-- 'b' -->
+        <path
+           id="path44"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1598.36,1785.02 v 195.94 h 18.25 v -48.68 h 41.38 l 13.39,-8.52 4.87,-8.52 4.86,-24.34 v -64.5 l -4.86,-25.56 -4.87,-7.3 -13.39,-8.52 h -59.63 m 18.25,32.86 h 41.38 l 4.87,8.52 v 64.5 l -4.87,8.52 h -41.38 v -81.54" />
+        <path
+           id="path46"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
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+        <!-- '3' -->
+        <path
+           id="path48"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1722.49,1817.88 h -23.12 v -32.86 h 69.36 l 13.4,8.52 4.86,7.3 3.65,25.56 v 40.16 l -8.51,15.82 8.51,17.04 v 40.16 l -3.65,24.34 -4.86,8.52 -13.4,8.52 h -69.36 v -32.86 h 69.36 l 3.66,-8.52 v -31.64 l -3.66,-8.52 h -46.24 v -32.86 h 46.24 l 3.66,-8.52 v -31.64 l -3.66,-8.52 h -46.24" />
+        <path
+           id="path50"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
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+        <!-- '2' -->
+        <path
+           id="path52"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1808.9,1785.02 h 92.49 v 32.86 h -73.02 v 32.86 l 3.65,7.3 h 46.25 l 13.38,8.52 4.87,8.52 4.87,24.34 v 40.16 l -4.87,24.34 -4.87,8.52 -13.38,8.52 h -46.25 l -13.39,-8.52 -4.86,-8.52 -4.87,-24.34 v -24.34 h 19.47 v 24.34 l 3.65,8.52 h 46.25 l 4.86,-8.52 v -40.16 l -4.86,-8.52 h -46.25 l -13.39,-8.52 -4.86,-7.3 -4.87,-24.34 v -65.72" />
+        <path
+           id="path54"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1808.9,1785.02 h 92.49 v 32.86 h -73.02 v 32.86 l 3.65,7.3 h 46.25 l 13.38,8.52 4.87,8.52 4.87,24.34 v 40.16 l -4.87,24.34 -4.87,8.52 -13.38,8.52 h -46.25 l -13.39,-8.52 -4.86,-8.52 -4.87,-24.34 v -24.34 h 19.47 v 24.34 l 3.65,8.52 h 46.25 l 4.86,-8.52 v -40.16 l -4.86,-8.52 h -46.25 l -13.39,-8.52 -4.86,-7.3 -4.87,-24.34 v -65.72" />
+        <!-- '7' -->
+        <path
+           id="path56"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 1919.64,1980.96 h 91.28 v -65.72 l -49.9,-130.22 h -23.12 l 54.76,138.74 v 24.34 h -73.02 v 32.86" />
+        <path
+           id="path58"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 1919.64,1980.96 h 91.28 v -65.72 l -49.9,-130.22 h -23.12 l 54.76,138.74 v 24.34 h -73.02 v 32.86" />
+        <!-- '0' -->
+        <path
+           id="path60"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 2047.43,1972.44 -4.87,-8.52 -3.65,-24.34 V 1826.4 l 3.65,-25.56 4.87,-7.3 14.61,-8.52 h 31.64 l 13.38,8.52 4.87,7.3 4.87,25.56 v 113.18 l -4.87,24.34 -4.87,8.52 -13.38,8.52 h -31.64 l -14.61,-8.52 m 14.61,-24.34 h 31.64 l 4.86,-8.52 V 1826.4 l -4.86,-8.52 h -31.64 l -4.88,8.52 v 113.18 l 4.88,8.52" />
+        <path
+           id="path62"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2047.43,1972.44 -4.87,-8.52 -3.65,-24.34 V 1826.4 l 3.65,-25.56 4.87,-7.3 14.61,-8.52 h 31.64 l 13.38,8.52 4.87,7.3 4.87,25.56 v 113.18 l -4.87,24.34 -4.87,8.52 -13.38,8.52 h -31.64 l -14.61,-8.52 m 14.61,-24.34 h 31.64 l 4.86,-8.52 V 1826.4 l -4.86,-8.52 h -31.64 l -4.88,8.52 v 113.18 l 4.88,8.52" />
+        <!-- 'j' -->
+        <path
+           id="path64"
+           style="fill:#ff00ff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+           d="m 2176.43,1948.1 v 32.86 h -18.25 v -32.86 h 18.25 m 0,-15.82 V 1769.2 l -4.87,-25.56 -4.86,-7.3 -13.39,-8.52 h -18.26 v 32.86 h 18.26 l 4.87,8.52 v 163.08 h 18.25" />
+        <path
+           id="path66"
+           style="fill:none;stroke:#ff00ff;stroke-width:1.21700001;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2176.43,1948.1 v 32.86 h -18.25 v -32.86 h 18.25 m 0,-15.82 V 1769.2 l -4.87,-25.56 -4.86,-7.3 -13.39,-8.52 h -18.26 v 32.86 h 18.26 l 4.87,8.52 v 163.08 h 18.25" />
+        <!-- Smile -->
+        <path
+           id="path68"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2778.85,1478.34 0.04,-0.02 c 21.03,-31.91 56.69,-51.12 94.91,-51.12 0.41,0 0.83,0 1.24,0.01 l -0.02,0.07 c 43.88,0.19 84.11,24.51 104.66,63.28" />
+        <!-- Left Eye (cyan) -->
+        <path
+           id="path70"
+           style="fill:none;stroke:#00ffff;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2820.22,1595.17 0.01,0.01 c -14.62,-1.91 -25.56,-14.37 -25.56,-29.11 0,-0.03 0,-0.07 0,-0.1 l -0.02,-0.01 c 0,-0.03 0,-0.07 0,-0.1 0,-16.09 13.04,-29.14 29.13,-29.14 0.43,0 0.87,0.01 1.29,0.03 h 3.67 0.01 c 14.61,1.91 25.55,14.37 25.55,29.11 0,0.03 0,0.07 0,0.1 l 0.02,0.01 c 0,0.04 0,0.08 0,0.12 0,16.07 -13.03,29.09 -29.09,29.09 -0.03,0 -0.08,0 -0.12,0 l -4.89,-0.01" />
+        <!-- Right Eye (cyan) -->
+        <path
+           id="path72"
+           style="fill:none;stroke:#00ffff;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2921.23,1569.61 v -3.65 l -0.01,-0.01 c 0,-0.27 -0.01,-0.54 -0.01,-0.81 0,-18.22 14.66,-33.05 32.87,-33.26 l 0.03,0.01 c 0.28,0 0.57,-0.01 0.84,-0.01 17.29,0 31.72,13.22 33.24,30.44 l -0.02,3.64 0.02,0.02 c 0,0.27 0.01,0.54 0.01,0.81 0,18.37 -14.9,33.28 -33.28,33.28 -0.26,0 -0.54,-0.01 -0.81,-0.02 l -0.02,-0.03 c -17.14,-0.18 -31.36,-13.34 -32.86,-30.42" />
+        <!-- Nose -->
+        <path
+           id="path74"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2892.03,1528.23 -29.21,-20.68" />
+        <path
+           id="path76"
+           style="fill:none;stroke:#ffff00;stroke-width:7.50158978;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:10;stroke-dasharray:none;stroke-opacity:1"
+           d="m 2862.82,1507.55 h 32.86" />
+      </g>
+    </g>
+  </g>
+</svg>
@@ -0,0 +1,57 @@
+package haus.nightmare.j3270;
+
+import haus.nightmare.j3270.ui.AppIcon;
+import org.junit.jupiter.api.Test;
+
+import javax.swing.*;
+import java.awt.*;
+import java.net.URL;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class AppIconTest {
+
+    @Test
+    public void testIconsAreLoaded() {
+        List<Image> icons = AppIcon.getAppIcons();
+        assertNotNull(icons, "Icons list must not be null");
+        assertFalse(icons.isEmpty(), "At least one icon image must be loaded");
+
+        // Verify standard sizes are present
+        int[] expectedSizes = {16, 24, 32, 48, 64, 128, 256, 512};
+        for (int expectedSize : expectedSizes) {
+            boolean found = icons.stream().anyMatch(img -> img.getWidth(null) == expectedSize && img.getHeight(null) == expectedSize);
+            assertTrue(found, "Expected icon of size " + expectedSize + "x" + expectedSize + " was not found");
+        }
+    }
+
+    @Test
+    public void testDefaultIcon() {
+        Image defaultIcon = AppIcon.getDefaultIcon();
+        assertNotNull(defaultIcon, "Default icon must not be null");
+        assertEquals(256, defaultIcon.getWidth(null), "Default icon width should be 256");
+        assertEquals(256, defaultIcon.getHeight(null), "Default icon height should be 256");
+    }
+
+    @Test
+    public void testApplyToInHeadless() {
+        // Must execute without exception even in headless environment
+        assertDoesNotThrow(() -> AppIcon.applyTo(null));
+
+        if (!GraphicsEnvironment.isHeadless()) {
+            JFrame frame = new JFrame();
+            assertDoesNotThrow(() -> AppIcon.applyTo(frame));
+            frame.dispose();
+        }
+    }
+
+    @Test
+    public void testSvgResourcesExist() {
+        URL svgUrl = getClass().getResource("/icons/lib3270j.svg");
+        assertNotNull(svgUrl, "lib3270j.svg must exist in /icons/");
+
+        URL iconSvgUrl = getClass().getResource("/icons/j3270_icon.svg");
+        assertNotNull(iconSvgUrl, "j3270_icon.svg must exist in /icons/");
+    }
+}
@@ -0,0 +1,93 @@
+package haus.nightmare.j3270;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.PrintStream;
+import java.util.logging.Handler;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class LoggingConfigurationTest {
+
+    private PrintStream originalOut;
+    private PrintStream originalErr;
+
+    @BeforeEach
+    public void setUp() {
+        originalOut = System.out;
+        originalErr = System.err;
+    }
+
+    @AfterEach
+    public void tearDown() {
+        System.setOut(originalOut);
+        System.setErr(originalErr);
+        // Ensure all handlers are closed and logging reset
+        J3270App.configureLogging(false);
+    }
+
+    @Test
+    public void testLoggingDisabledWhenDebugFalse() {
+        File logFile = new File("j3270.log");
+        if (logFile.exists()) {
+            logFile.delete();
+        }
+
+        ByteArrayOutputStream outContent = new ByteArrayOutputStream();
+        ByteArrayOutputStream errContent = new ByteArrayOutputStream();
+        System.setOut(new PrintStream(outContent));
+        System.setErr(new PrintStream(errContent));
+
+        J3270App.configureLogging(false);
+
+        // Root logger should have no handlers attached
+        Logger rootLogger = Logger.getLogger("");
+        assertEquals(0, rootLogger.getHandlers().length, "Root logger should have no handlers when debug is disabled");
+        assertEquals(Level.OFF, rootLogger.getLevel(), "Root logger level should be OFF when debug is disabled");
+
+        // Application loggers should be OFF
+        assertEquals(Level.OFF, Logger.getLogger("haus.nightmare").getLevel());
+        assertEquals(Level.OFF, Logger.getLogger("haus.nightmare.j3270").getLevel());
+        assertEquals(Level.OFF, Logger.getLogger("haus.nightmare.lib3270j").getLevel());
+
+        // Emit log records at all levels
+        Logger appLogger = Logger.getLogger("haus.nightmare.j3270.J3270App");
+        appLogger.severe("Test SEVERE message");
+        appLogger.warning("Test WARNING message");
+        appLogger.info("Test INFO message");
+        appLogger.fine("Test FINE message");
+
+        // Verify nothing was written to stdout or stderr
+        assertEquals(0, outContent.size(), "Standard output should be empty when debug is disabled");
+        assertEquals(0, errContent.size(), "Standard error should be empty when debug is disabled");
+
+        // Verify j3270.log was NOT created
+        assertFalse(logFile.exists(), "j3270.log should NOT be created when debug is disabled");
+    }
+
+    @Test
+    public void testLoggingEnabledWhenDebugTrue() {
+        J3270App.configureLogging(true);
+
+        Logger rootLogger = Logger.getLogger("");
+        Handler[] handlers = rootLogger.getHandlers();
+        assertTrue(handlers.length >= 2, "Root logger should have at least ConsoleHandler and FileHandler when debug is enabled");
+
+        assertEquals(Level.ALL, rootLogger.getLevel());
+        assertEquals(Level.ALL, Logger.getLogger("haus.nightmare").getLevel());
+        assertEquals(Level.ALL, Logger.getLogger("haus.nightmare.j3270").getLevel());
+        assertEquals(Level.ALL, Logger.getLogger("haus.nightmare.lib3270j").getLevel());
+
+        File logFile = new File("j3270.log");
+        assertTrue(logFile.exists(), "j3270.log should be created when debug is enabled");
+
+        // Clean up
+        J3270App.configureLogging(false);
+    }
+}
@@ -0,0 +1,102 @@
+package haus.nightmare.j3270.ft;
+
+import haus.nightmare.lib3270j.ft.FTConfig;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.awt.HeadlessException;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class FileTransferSessionAndCmsTest {
+
+    @BeforeEach
+    @AfterEach
+    public void cleanup() {
+        FileTransferDialog.resetSessionState();
+    }
+
+    @Test
+    public void testCmsFilenamePeriodReplacement() {
+        // Test replacing periods with spaces for CMS
+        assertEquals("fscms exec", FileTransferDialog.formatHostFilename("fscms.exec", FTConfig.HostType.CMS));
+        assertEquals("fscms exec", FileTransferDialog.formatHostFilename("/var/tmp/fscms.exec", FTConfig.HostType.CMS));
+        assertEquals("test script exec", FileTransferDialog.formatHostFilename("test.script.exec", FTConfig.HostType.CMS));
+        assertEquals("noextension", FileTransferDialog.formatHostFilename("noextension", FTConfig.HostType.CMS));
+
+        // TSO and CICS should retain periods
+        assertEquals("fscms.exec", FileTransferDialog.formatHostFilename("fscms.exec", FTConfig.HostType.TSO));
+        assertEquals("my.dataset.name", FileTransferDialog.formatHostFilename("/path/to/my.dataset.name", FTConfig.HostType.TSO));
+        assertEquals("cics.file", FileTransferDialog.formatHostFilename("cics.file", FTConfig.HostType.CICS));
+    }
+
+    @Test
+    public void testSessionStateRememberedInMemory() {
+        assertNull(FileTransferDialog.getLastTransferState());
+
+        FileTransferDialog.TransferSessionState state = new FileTransferDialog.TransferSessionState();
+        state.hostType = FTConfig.HostType.CMS;
+        state.isSend = true;
+        state.localFile = "/tmp/fscms.exec";
+        state.hostFile = "fscms exec";
+        state.isAscii = true;
+        state.mtu = 8192;
+        state.crFlag = false;
+        state.remapFlag = false;
+        state.append = true;
+        state.overwrite = true;
+        state.options = "CLEAR";
+
+        FileTransferDialog.setLastTransferState(state);
+
+        FileTransferDialog.TransferSessionState retrieved = FileTransferDialog.getLastTransferState();
+        assertNotNull(retrieved);
+        assertEquals(FTConfig.HostType.CMS, retrieved.hostType);
+        assertTrue(retrieved.isSend);
+        assertEquals("/tmp/fscms.exec", retrieved.localFile);
+        assertEquals("fscms exec", retrieved.hostFile);
+        assertTrue(retrieved.isAscii);
+        assertEquals(8192, retrieved.mtu);
+        assertFalse(retrieved.crFlag);
+        assertFalse(retrieved.remapFlag);
+        assertTrue(retrieved.append);
+        assertTrue(retrieved.overwrite);
+        assertEquals("CLEAR", retrieved.options);
+    }
+
+    @Test
+    public void testDialogPrefillingFromSessionState() {
+        FileTransferDialog.TransferSessionState state = new FileTransferDialog.TransferSessionState();
+        state.hostType = FTConfig.HostType.CMS;
+        state.isSend = true;
+        state.localFile = "/tmp/fscms.exec";
+        state.hostFile = "fscms exec";
+        state.isAscii = false; // Binary
+        state.mtu = 4096;
+        state.crFlag = true;
+        state.remapFlag = true;
+        state.append = false;
+        state.overwrite = true;
+        state.options = "ASCII";
+
+        FileTransferDialog.setLastTransferState(state);
+
+        try {
+            FileTransferDialog dialog = new FileTransferDialog(null, null);
+            assertEquals(FTConfig.HostType.CMS, dialog.getHostTypeCombo().getSelectedItem());
+            assertTrue(dialog.getSendRadio().isSelected());
+            assertFalse(dialog.getReceiveRadio().isSelected());
+            assertEquals("/tmp/fscms.exec", dialog.getLocalFileField().getText());
+            assertEquals("fscms exec", dialog.getHostFileField().getText());
+            assertFalse(dialog.getAsciiRadio().isSelected());
+            assertTrue(dialog.getBinaryRadio().isSelected());
+            assertEquals(4096, dialog.getMtuCombo().getSelectedItem());
+            assertTrue(dialog.getOverwriteCheck().isSelected());
+            assertEquals("ASCII", dialog.getOptionsField().getText());
+            dialog.dispose();
+        } catch (HeadlessException e) {
+            // Headless environment; verified through state retention
+        }
+    }
+}
@@ -0,0 +1,298 @@
+package haus.nightmare.j3270.ui;
+
+import haus.nightmare.j3270.J3270App;
+import haus.nightmare.j3270.config.Settings;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import javax.swing.*;
+import java.awt.*;
+import java.io.File;
+import java.lang.reflect.Field;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class BehaviorSettingsTest {
+
+    private boolean origAutoReconnect;
+    private int origReconnectMaxRetries;
+    private boolean origInputMask;
+    private String origInputMaskChar;
+    private boolean origBlockPaste;
+
+    @BeforeEach
+    public void setUp() {
+        origAutoReconnect = Settings.getAutoConnectAutoReconnect();
+        origReconnectMaxRetries = Settings.getAutoConnectReconnectMaxRetries();
+        origInputMask = Settings.getInputMask();
+        origInputMaskChar = Settings.getInputMaskChar();
+        origBlockPaste = Settings.getBlockPaste();
+    }
+
+    @AfterEach
+    public void tearDown() {
+        Settings.setAutoConnectAutoReconnect(origAutoReconnect);
+        Settings.setAutoConnectReconnectMaxRetries(origReconnectMaxRetries);
+        Settings.setInputMask(origInputMask);
+        Settings.setInputMaskChar(origInputMaskChar);
+        Settings.setBlockPaste(origBlockPaste);
+    }
+
+    @Test
+    @DisplayName("Auto-reconnect settings get/set and alias consistency")
+    public void testAutoReconnectSettingsPersistence() {
+        Settings.setAutoConnectAutoReconnect(true);
+        assertTrue(Settings.getAutoConnectAutoReconnect());
+        assertTrue(Settings.getAutoReconnect());
+
+        Settings.setAutoReconnect(false);
+        assertFalse(Settings.getAutoConnectAutoReconnect());
+        assertFalse(Settings.getAutoReconnect());
+
+        Settings.setAutoConnectReconnectMaxRetries(8);
+        assertEquals(8, Settings.getAutoConnectReconnectMaxRetries());
+    }
+
+    @Test
+    @DisplayName("Input mask settings get/set and defaults")
+    public void testInputMaskSettingsPersistence() {
+        Settings.setInputMask(false);
+        assertFalse(Settings.getInputMask());
+        assertFalse(Settings.getInputMaskEnabled());
+
+        Settings.setInputMaskEnabled(true);
+        assertTrue(Settings.getInputMask());
+        assertTrue(Settings.getInputMaskEnabled());
+
+        Settings.setInputMaskChar("#");
+        assertEquals("#", Settings.getInputMaskChar());
+
+        Settings.setInputMaskChar("*");
+        assertEquals("*", Settings.getInputMaskChar());
+
+        // Empty string should fall back to '*'
+        Settings.setInputMaskChar("");
+        assertEquals("*", Settings.getInputMaskChar());
+    }
+
+    @Test
+    @DisplayName("Block paste setting defaults to true and binds to SettingsDialog")
+    public void testBlockPasteSettingAndDialogBinding() throws Exception {
+        // Default must be true
+        assertTrue(Settings.getBlockPaste(), "Settings.getBlockPaste() should default to true");
+
+        Settings.setBlockPaste(false);
+        assertFalse(Settings.getBlockPaste());
+        Settings.setBlockPaste(true);
+        assertTrue(Settings.getBlockPaste());
+
+        J3270App app;
+        try {
+            app = new J3270App();
+        } catch (HeadlessException e) {
+            return;
+        }
+
+        try {
+            SettingsDialog dialog = new SettingsDialog(app);
+            Field blockPasteField = SettingsDialog.class.getDeclaredField("blockPasteCheck");
+            blockPasteField.setAccessible(true);
+            JCheckBox blockPasteCheck = (JCheckBox) blockPasteField.get(dialog);
+            assertNotNull(blockPasteCheck, "blockPasteCheck must exist in SettingsDialog");
+            assertEquals("Block paste", blockPasteCheck.getText());
+            assertEquals(Settings.getBlockPaste(), blockPasteCheck.isSelected());
+
+            dialog.dispose();
+            app.dispose();
+        } catch (HeadlessException ignored) {
+        }
+    }
+
+    @Test
+    @DisplayName("INI export and load preserves autoReconnect and inputMask")
+    public void testIniExportAndLoad() throws Exception {
+        Settings.setAutoConnectAutoReconnect(true);
+        Settings.setAutoConnectReconnectMaxRetries(12);
+        Settings.setInputMask(false);
+        Settings.setInputMaskChar("@");
+
+        File tempFile = File.createTempFile("j3270_behavior_test", ".ini");
+        tempFile.deleteOnExit();
+
+        Settings.exportToIniFile(tempFile.getAbsolutePath());
+
+        // Reset to different values
+        Settings.setAutoConnectAutoReconnect(false);
+        Settings.setAutoConnectReconnectMaxRetries(3);
+        Settings.setInputMask(true);
+        Settings.setInputMaskChar("*");
+
+        // Load back from INI
+        Settings.loadFromIniFile(tempFile.getAbsolutePath());
+
+        assertTrue(Settings.getAutoConnectAutoReconnect());
+        assertEquals(12, Settings.getAutoConnectReconnectMaxRetries());
+        assertFalse(Settings.getInputMask());
+        assertEquals("@", Settings.getInputMaskChar());
+
+        tempFile.delete();
+    }
+
+    @Test
+    @DisplayName("TerminalPanel reloads input mask settings correctly")
+    public void testTerminalPanelInputMaskReload() {
+        try {
+            TerminalPanel panel = new TerminalPanel();
+            Settings.setInputMask(false);
+            Settings.setInputMaskChar("$");
+            panel.reloadSettings();
+
+            assertFalse(panel.isInputMaskEnabled());
+            assertEquals("$", panel.getInputMaskChar());
+
+            panel.setInputMaskEnabled(true);
+            assertTrue(panel.isInputMaskEnabled());
+
+            panel.setInputMaskChar("#");
+            assertEquals("#", panel.getInputMaskChar());
+        } catch (HeadlessException ignored) {
+            // Safe fallback for headless runner
+        }
+    }
+
+    @Test
+    @DisplayName("SettingsDialog contains Auto-Reconnect checkbox and Input Mask controls in Behavior panel")
+    public void testSettingsDialogBehaviorControls() throws Exception {
+        J3270App app;
+        try {
+            app = new J3270App();
+        } catch (HeadlessException e) {
+            // In automated/headless environments, JFrame cannot be initialized
+            return;
+        }
+
+        try {
+            SettingsDialog dialog = new SettingsDialog(app);
+
+            // Access private fields in SettingsDialog to verify component bindings
+            Field autoRecField = SettingsDialog.class.getDeclaredField("autoReconnectCheck");
+            autoRecField.setAccessible(true);
+            JCheckBox autoReconnectCheck = (JCheckBox) autoRecField.get(dialog);
+            assertNotNull(autoReconnectCheck, "autoReconnectCheck must exist in SettingsDialog");
+            assertEquals("Auto-Reconnect on Disconnect", autoReconnectCheck.getText());
+            assertEquals(Settings.getAutoConnectAutoReconnect(), autoReconnectCheck.isSelected());
+
+            Field inputMaskCheckField = SettingsDialog.class.getDeclaredField("inputMaskCheck");
+            inputMaskCheckField.setAccessible(true);
+            JCheckBox inputMaskCheck = (JCheckBox) inputMaskCheckField.get(dialog);
+            assertNotNull(inputMaskCheck, "inputMaskCheck must exist in SettingsDialog");
+            assertEquals(Settings.getInputMask(), inputMaskCheck.isSelected());
+
+            Field inputMaskCharField = SettingsDialog.class.getDeclaredField("inputMaskCharField");
+            inputMaskCharField.setAccessible(true);
+            JTextField maskCharField = (JTextField) inputMaskCharField.get(dialog);
+            assertNotNull(maskCharField, "inputMaskCharField must exist in SettingsDialog");
+            assertEquals(Settings.getInputMaskChar(), maskCharField.getText());
+            assertEquals(inputMaskCheck.isSelected(), maskCharField.isEnabled());
+
+            // Test interaction: unchecking inputMask disables character field
+            inputMaskCheck.setSelected(false);
+            for (java.awt.event.ActionListener al : inputMaskCheck.getActionListeners()) {
+                al.actionPerformed(new java.awt.event.ActionEvent(inputMaskCheck, java.awt.event.ActionEvent.ACTION_PERFORMED, ""));
+            }
+            assertFalse(maskCharField.isEnabled());
+
+            dialog.dispose();
+            app.dispose();
+        } catch (HeadlessException ignored) {
+        }
+    }
+
+    @Test
+    @DisplayName("SettingsDialog tabs are organized into Appearance, Behavior, Connection, and Entry Assist")
+    public void testSettingsDialogReorganizedTabsAndGrouping() throws Exception {
+        J3270App app;
+        try {
+            app = new J3270App();
+        } catch (HeadlessException e) {
+            return;
+        }
+
+        try {
+            SettingsDialog dialog = new SettingsDialog(app);
+
+            // Find top-level JTabbedPane
+            JTabbedPane mainTabs = null;
+            for (Component c : dialog.getContentPane().getComponents()) {
+                if (c instanceof JTabbedPane) {
+                    mainTabs = (JTabbedPane) c;
+                    break;
+                }
+            }
+            assertNotNull(mainTabs, "Main JTabbedPane must exist");
+            assertEquals(4, mainTabs.getTabCount(), "Must have 4 main tabs");
+            assertEquals("Appearance", mainTabs.getTitleAt(0));
+            assertEquals("Behavior", mainTabs.getTitleAt(1));
+            assertEquals("Connection", mainTabs.getTitleAt(2));
+            assertEquals("Entry Assist", mainTabs.getTitleAt(3));
+
+            // Verify Appearance subtabs: Display & Font, Colors
+            Component appComp = mainTabs.getComponentAt(0);
+            assertTrue(appComp instanceof JPanel);
+            JTabbedPane appTabs = findTabbedPane((JPanel) appComp);
+            assertNotNull(appTabs, "Appearance panel must have subtabs");
+            assertEquals(2, appTabs.getTabCount());
+            assertEquals("Display & Font", appTabs.getTitleAt(0));
+            assertEquals("Colors", appTabs.getTitleAt(1));
+
+            // Verify Behavior subtabs: General, Keymap
+            Component behComp = mainTabs.getComponentAt(1);
+            assertTrue(behComp instanceof JPanel);
+            JTabbedPane behTabs = findTabbedPane((JPanel) behComp);
+            assertNotNull(behTabs, "Behavior panel must have subtabs");
+            assertEquals(2, behTabs.getTabCount());
+            assertEquals("General", behTabs.getTitleAt(0));
+            assertEquals("Keymap", behTabs.getTitleAt(1));
+
+            // Verify controls exist in SettingsDialog
+            Field cursorStyleField = SettingsDialog.class.getDeclaredField("cursorStyleBox");
+            cursorStyleField.setAccessible(true);
+            assertNotNull(cursorStyleField.get(dialog), "cursorStyleBox must exist");
+
+            Field crosshairField = SettingsDialog.class.getDeclaredField("crosshairRulerCheck");
+            crosshairField.setAccessible(true);
+            assertNotNull(crosshairField.get(dialog), "crosshairRulerCheck must exist");
+
+            Field fourColorField = SettingsDialog.class.getDeclaredField("fourColorOverrideCheck");
+            fourColorField.setAccessible(true);
+            assertNotNull(fourColorField.get(dialog), "fourColorOverrideCheck must exist");
+
+            Field numericLockField = SettingsDialog.class.getDeclaredField("numericFieldLockCheck");
+            numericLockField.setAccessible(true);
+            assertNotNull(numericLockField.get(dialog), "numericFieldLockCheck must exist");
+
+            Field autoSkipField = SettingsDialog.class.getDeclaredField("autoSkipCheck");
+            autoSkipField.setAccessible(true);
+            assertNotNull(autoSkipField.get(dialog), "autoSkipCheck must exist");
+
+            dialog.dispose();
+            app.dispose();
+        } catch (HeadlessException ignored) {
+        }
+    }
+
+    private static JTabbedPane findTabbedPane(Container container) {
+        for (Component c : container.getComponents()) {
+            if (c instanceof JTabbedPane) {
+                return (JTabbedPane) c;
+            }
+            if (c instanceof Container) {
+                JTabbedPane nested = findTabbedPane((Container) c);
+                if (nested != null) return nested;
+            }
+        }
+        return null;
+    }
+}
@@ -0,0 +1,209 @@
+package haus.nightmare.j3270.ui;
+
+import haus.nightmare.j3270.config.Settings;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.awt.Dimension;
+import java.awt.HeadlessException;
+import java.awt.event.ComponentEvent;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class FontSettingsPersistenceTest {
+
+    private int originalFontSize;
+    private String originalFontFamily;
+    private int originalUiFontSize;
+    private String originalUiFontFamily;
+
+    @BeforeEach
+    public void setup() {
+        originalFontSize = Settings.getFontSize();
+        originalFontFamily = Settings.getFontFamily();
+        originalUiFontSize = Settings.getUiFontSize();
+        originalUiFontFamily = Settings.getUiFontFamily();
+    }
+
+    @AfterEach
+    public void tearDown() {
+        Settings.setFontSize(originalFontSize);
+        Settings.setFontFamily(originalFontFamily);
+        Settings.setUiFontSize(originalUiFontSize);
+        Settings.setUiFontFamily(originalUiFontFamily);
+    }
+
+    @Test
+    public void testSettingsPersistence() {
+        Settings.setFontSize(22);
+        Settings.setFontFamily("Monospaced");
+        assertEquals(22, Settings.getFontSize());
+        assertEquals("Monospaced", Settings.getFontFamily());
+
+        Settings.setFontSize(18);
+        assertEquals(18, Settings.getFontSize());
+    }
+
+    @Test
+    public void testUiFontSettingsIndependence() {
+        // Configure terminal fonts
+        Settings.setFontFamily("Courier");
+        Settings.setFontSize(20);
+
+        // Configure UI fonts
+        Settings.setUiFontFamily("Dialog");
+        Settings.setUiFontSize(15);
+
+        // Verify independent getters
+        assertEquals("Courier", Settings.getFontFamily());
+        assertEquals(20, Settings.getFontSize());
+        assertEquals("Dialog", Settings.getUiFontFamily());
+        assertEquals(15, Settings.getUiFontSize());
+
+        // Change UI font and ensure terminal font is untouched
+        Settings.setUiFontSize(18);
+        Settings.setUiFontFamily("SansSerif");
+        assertEquals("Courier", Settings.getFontFamily(), "Terminal font family must not change when UI font changes");
+        assertEquals(20, Settings.getFontSize(), "Terminal font size must not change when UI font changes");
+        assertEquals("SansSerif", Settings.getUiFontFamily());
+        assertEquals(18, Settings.getUiFontSize());
+
+        // Change terminal font and ensure UI font is untouched
+        Settings.setFontSize(24);
+        Settings.setFontFamily("IBM 3270");
+        assertEquals("SansSerif", Settings.getUiFontFamily(), "UI font family must not change when terminal font changes");
+        assertEquals(18, Settings.getUiFontSize(), "UI font size must not change when terminal font changes");
+        assertEquals("IBM 3270", Settings.getFontFamily());
+        assertEquals(24, Settings.getFontSize());
+    }
+
+    @Test
+    public void testUiFontIniImportExport() throws Exception {
+        java.io.File tempIni = java.io.File.createTempFile("j3270_ui_font_test", ".ini");
+        tempIni.deleteOnExit();
+
+        try {
+            try (java.io.PrintWriter pw = new java.io.PrintWriter(tempIni)) {
+                pw.println("[appearance]");
+                pw.println("uiFontFamily = Dialog");
+                pw.println("uiFontSize = 16");
+                pw.println("fontFamily = Monospaced");
+                pw.println("fontSize = 22");
+            }
+
+            Settings.loadFromIniFile(tempIni.getAbsolutePath());
+
+            assertEquals("Dialog", Settings.getUiFontFamily());
+            assertEquals(16, Settings.getUiFontSize());
+            assertEquals("Monospaced", Settings.getFontFamily());
+            assertEquals(22, Settings.getFontSize());
+
+            // Export to another file and check contents
+            java.io.File exportIni = java.io.File.createTempFile("j3270_ui_font_export", ".ini");
+            exportIni.deleteOnExit();
+
+            Settings.exportToIniFile(exportIni.getAbsolutePath());
+            String exported = new String(java.nio.file.Files.readAllBytes(exportIni.toPath()));
+
+            assertTrue(exported.contains("uiFontFamily = Dialog"), "Exported INI must contain uiFontFamily");
+            assertTrue(exported.contains("uiFontSize = 16"), "Exported INI must contain uiFontSize");
+            assertTrue(exported.contains("fontFamily = Monospaced"), "Exported INI must contain terminal fontFamily");
+            assertTrue(exported.contains("fontSize = 22"), "Exported INI must contain terminal fontSize");
+        } finally {
+            tempIni.delete();
+        }
+    }
+
+    @Test
+    public void testTerminalPanelResizeDoesNotResetFontSize() {
+        try {
+            Settings.setFontSize(24);
+            Settings.setFontFamily("Monospaced");
+
+            TerminalPanel panel = new TerminalPanel();
+            assertEquals(24, panel.getFontSize());
+            assertEquals(24, Settings.getFontSize());
+
+            // Simulate window / component resize events
+            panel.setSize(new Dimension(800, 600));
+            ComponentEvent resizeEvent1 = new ComponentEvent(panel, ComponentEvent.COMPONENT_RESIZED);
+            for (java.awt.event.ComponentListener cl : panel.getComponentListeners()) {
+                cl.componentResized(resizeEvent1);
+            }
+
+            // Verify font size and family did NOT reset
+            assertEquals(24, panel.getFontSize());
+            assertEquals(24, Settings.getFontSize());
+            assertEquals("Monospaced", Settings.getFontFamily());
+
+            // Simulate another resize to smaller dimension
+            panel.setSize(new Dimension(400, 300));
+            ComponentEvent resizeEvent2 = new ComponentEvent(panel, ComponentEvent.COMPONENT_RESIZED);
+            for (java.awt.event.ComponentListener cl : panel.getComponentListeners()) {
+                cl.componentResized(resizeEvent2);
+            }
+
+            assertEquals(24, panel.getFontSize());
+            assertEquals(24, Settings.getFontSize());
+            assertEquals("Monospaced", Settings.getFontFamily());
+
+            panel.dispose();
+        } catch (HeadlessException e) {
+            // In headless environment without display, Settings persistence is verified above
+        }
+    }
+
+    @Test
+    public void testSettingsDialogApplyDoesNotIncrementFontSize() throws Exception {
+        try {
+            Settings.setUiFontSize(16);
+            Settings.setFontSize(22);
+            Settings.setUiFontFamily("Dialog");
+            Settings.setFontFamily("Monospaced");
+            ThemeManager.applyUIManagerDefaults(ThemeManager.getTheme());
+
+            SettingsDialog dialog = new SettingsDialog(null);
+
+            java.lang.reflect.Method applyMethod = SettingsDialog.class.getDeclaredMethod("applySettings");
+            applyMethod.setAccessible(true);
+
+            // Find all JLabels in SettingsDialog
+            java.util.List<javax.swing.JLabel> labels = new java.util.ArrayList<>();
+            findLabelsRecursively(dialog.getContentPane(), labels);
+            assertFalse(labels.isEmpty(), "SettingsDialog must contain labels");
+
+            for (javax.swing.JLabel label : labels) {
+                assertEquals(16, label.getFont().getSize(),
+                        "Label '" + label.getText() + "' must initially have size 16");
+            }
+
+            // Click Apply multiple times
+            for (int click = 1; click <= 5; click++) {
+                applyMethod.invoke(dialog);
+
+                assertEquals(16, Settings.getUiFontSize(), "Settings uiFontSize must stay 16");
+                assertEquals(22, Settings.getFontSize(), "Settings fontSize must stay 22");
+
+                for (javax.swing.JLabel label : labels) {
+                    assertEquals(16, label.getFont().getSize(),
+                            "Label '" + label.getText() + "' must remain at size 16 after click #" + click);
+                }
+            }
+
+            dialog.dispose();
+        } catch (HeadlessException e) {
+            // Ignored in headless environment if dialog creation fails
+        }
+    }
+
+    private void findLabelsRecursively(java.awt.Container container, java.util.List<javax.swing.JLabel> labels) {
+        for (java.awt.Component c : container.getComponents()) {
+            if (c instanceof javax.swing.JLabel) {
+                labels.add((javax.swing.JLabel) c);
+            } else if (c instanceof java.awt.Container) {
+                findLabelsRecursively((java.awt.Container) c, labels);
+            }
+        }
+    }
+}
@@ -0,0 +1,157 @@
+package haus.nightmare.j3270.ui;
+
+import haus.nightmare.j3270.J3270App;
+import haus.nightmare.j3270.config.Settings;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import javax.swing.*;
+import java.awt.*;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileWriter;
+import java.io.IOException;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class ImportConfigTest {
+
+    private String origFontFamily;
+    private int origFontSize;
+    private String origHost;
+    private int origPort;
+    private boolean origAutoReconnect;
+
+    @BeforeEach
+    public void setUp() {
+        origFontFamily = Settings.getFontFamily();
+        origFontSize = Settings.getFontSize();
+        origHost = Settings.getAutoConnectHost();
+        origPort = Settings.getAutoConnectPort();
+        origAutoReconnect = Settings.getAutoConnectAutoReconnect();
+    }
+
+    @AfterEach
+    public void tearDown() {
+        Settings.setFontFamily(origFontFamily);
+        Settings.setFontSize(origFontSize);
+        Settings.setAutoConnectHost(origHost);
+        Settings.setAutoConnectPort(origPort);
+        Settings.setAutoConnectAutoReconnect(origAutoReconnect);
+    }
+
+    @Test
+    @DisplayName("SettingsDialog contains Import Config button positioned to the left of Export Config")
+    public void testImportButtonPlacementAndProperties() {
+        J3270App app;
+        try {
+            app = new J3270App();
+        } catch (HeadlessException e) {
+            return;
+        }
+
+        try {
+            SettingsDialog dialog = new SettingsDialog(app);
+
+            JButton btnImport = dialog.getBtnImport();
+            JButton btnExport = dialog.getBtnExport();
+
+            assertNotNull(btnImport, "Import Config button must exist");
+            assertNotNull(btnExport, "Export Config button must exist");
+
+            assertEquals("Import Config...", btnImport.getText());
+            assertEquals("Export Config...", btnExport.getText());
+
+            // Verify btnImport is in the same container and positioned before (to the left of) btnExport
+            Container parent = btnImport.getParent();
+            assertNotNull(parent, "Import button must have a parent container");
+            assertSame(parent, btnExport.getParent(), "Import and Export buttons must share the same parent panel");
+
+            Component[] comps = parent.getComponents();
+            int importIdx = -1;
+            int exportIdx = -1;
+            for (int i = 0; i < comps.length; i++) {
+                if (comps[i] == btnImport) importIdx = i;
+                if (comps[i] == btnExport) exportIdx = i;
+            }
+
+            assertTrue(importIdx >= 0, "btnImport must be in parent container");
+            assertTrue(exportIdx >= 0, "btnExport must be in parent container");
+            assertTrue(importIdx < exportIdx, "btnImport must be placed to the left of btnExport (index " + importIdx + " < " + exportIdx + ")");
+
+            dialog.dispose();
+            app.dispose();
+        } catch (HeadlessException ignored) {
+        }
+    }
+
+    @Test
+    @DisplayName("importConfigFile updates Settings and refreshes SettingsDialog controls")
+    public void testImportConfigFileUpdatesSettingsAndDialog() throws IOException {
+        J3270App app;
+        try {
+            app = new J3270App();
+        } catch (HeadlessException e) {
+            return;
+        }
+
+        File tempIni = File.createTempFile("j3270_test_import", ".ini");
+        try {
+            try (FileWriter writer = new FileWriter(tempIni)) {
+                writer.write("[appearance]\n");
+                writer.write("fontSize = 24\n");
+                writer.write("fontFamily = Monospaced\n");
+                writer.write("\n[behavior]\n");
+                writer.write("startupBehavior = AUTO_CONNECT\n");
+                writer.write("autoConnectHost = testhost.example.org\n");
+                writer.write("autoConnectPort = 2323\n");
+                writer.write("autoConnectAutoReconnect = true\n");
+            }
+
+            SettingsDialog dialog = new SettingsDialog(app);
+            dialog.importConfigFile(tempIni);
+
+            // Verify Settings updated
+            assertEquals(24, Settings.getFontSize());
+            assertEquals("testhost.example.org", Settings.getAutoConnectHost());
+            assertEquals(2323, Settings.getAutoConnectPort());
+            assertTrue(Settings.getAutoConnectAutoReconnect());
+
+            // Verify dialog state reflects the imported values
+            assertEquals(Settings.StartupBehavior.AUTO_CONNECT, Settings.getStartupBehavior());
+
+            dialog.dispose();
+            app.dispose();
+        } catch (HeadlessException ignored) {
+        } finally {
+            if (tempIni.exists()) {
+                tempIni.delete();
+            }
+        }
+    }
+
+    @Test
+    @DisplayName("importConfigFile throws FileNotFoundException for nonexistent file")
+    public void testImportNonExistentFileThrows() {
+        J3270App app;
+        try {
+            app = new J3270App();
+        } catch (HeadlessException e) {
+            return;
+        }
+
+        try {
+            SettingsDialog dialog = new SettingsDialog(app);
+            File nonExistent = new File("/path/to/nonexistent/file_" + System.currentTimeMillis() + ".ini");
+            assertThrows(FileNotFoundException.class, () -> {
+                dialog.importConfigFile(nonExistent);
+            });
+
+            dialog.dispose();
+            app.dispose();
+        } catch (HeadlessException ignored) {
+        }
+    }
+}
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
rudi	cfb32bdca5	Build Gitea release against Java 11 (lowest supported Java) Build and Test j3270 / Build JAR & Run Tests (Java 11) (push) Successful in 34s Details Build and Test j3270 / Build JAR & Run Tests (Java 21) (push) Successful in 1m13s Details Release j3270 / Build & Publish Release (push) Successful in 1m12s Details Build and Test j3270 / Build JAR & Run Tests (Java 17) (push) Successful in 1m37s Details	2026-09-15 23:52:21 +00:00
rudi	754b1de7cb	Rearrange settings, update sample config Build and Test j3270 / Build JAR & Run Tests (Java 11) (push) Successful in 1m8s Details Build and Test j3270 / Build JAR & Run Tests (Java 21) (push) Successful in 1m15s Details Build and Test j3270 / Build JAR & Run Tests (Java 17) (push) Successful in 1m38s Details Release j3270 / Build & Publish Release (push) Successful in 1m13s Details	2026-09-15 17:59:26 +00:00
rudi	7892229a2c	Add icon Build and Test j3270 / Build JAR & Run Tests (Java 11) (push) Successful in 32s Details Build and Test j3270 / Build JAR & Run Tests (Java 17) (push) Successful in 1m9s Details Build and Test j3270 / Build JAR & Run Tests (Java 21) (push) Successful in 1m12s Details	2026-09-14 13:01:41 +00:00
rudi	14bf7ba4b1	Add bugfixes from testing Build and Test j3270 / Build JAR & Run Tests (Java 21) (push) Successful in 37s Details Release j3270 / Build & Publish Release (push) Successful in 43s Details Build and Test j3270 / Build JAR & Run Tests (Java 11) (push) Successful in 1m14s Details Build and Test j3270 / Build JAR & Run Tests (Java 17) (push) Successful in 1m12s Details	2026-09-12 17:21:21 -04:00
rudi	bdfe6eec2a	IMON GRAPHIC! Build and Test j3270 / Build JAR & Run Tests (Java 21) (push) Successful in 31s Details Build and Test j3270 / Build JAR & Run Tests (Java 17) (push) Successful in 47s Details Build and Test j3270 / Build JAR & Run Tests (Java 11) (push) Successful in 1m9s Details Release j3270 / Build & Publish Release (push) Successful in 42s Details	2026-09-12 15:33:12 +00:00
rudi	c28c097e25	Fix bugs reported in Discord Build and Test j3270 / Build JAR & Run Tests (Java 17) (push) Successful in 33s Details Build and Test j3270 / Build JAR & Run Tests (Java 11) (push) Successful in 42s Details Build and Test j3270 / Build JAR & Run Tests (Java 21) (push) Successful in 1m17s Details	2026-09-12 14:58:48 +00:00
rudi	46a022d86b	Add bugfixes from discord Build and Test j3270 / Build JAR & Run Tests (Java 21) (push) Successful in 42s Details Build and Test j3270 / Build JAR & Run Tests (Java 17) (push) Successful in 1m9s Details Release j3270 / Build & Publish Release (push) Successful in 32s Details Build and Test j3270 / Build JAR & Run Tests (Java 11) (push) Successful in 42s Details	2026-09-10 09:24:39 -04:00
rudi	59925c2787	Add headless server and setup script Build and Test j3270 / Build JAR & Run Tests (Java 17) (push) Successful in 34s Details Build and Test j3270 / Build JAR & Run Tests (Java 11) (push) Successful in 42s Details Build and Test j3270 / Build JAR & Run Tests (Java 21) (push) Successful in 1m13s Details Release j3270 / Build & Publish Release (push) Successful in 1m8s Details	2026-09-08 11:38:38 -04:00
rudi	f8fc0e4b22	Fix the build Build and Test j3270 / Build JAR & Run Tests (Java 17) (push) Successful in 25s Details Build and Test j3270 / Build JAR & Run Tests (Java 11) (push) Successful in 59s Details Build and Test j3270 / Build JAR & Run Tests (Java 21) (push) Successful in 23s Details	2026-09-07 20:31:18 -04:00
rudi	dbcb0aa1b6	Clear cruft Build and Test j3270 / Build JAR & Run Tests (Java 21) (push) Successful in 26s Details Build and Test j3270 / Build JAR & Run Tests (Java 11) (push) Successful in 36s Details Build and Test j3270 / Build JAR & Run Tests (Java 17) (push) Failing after 1m1s Details	2026-09-07 20:16:00 -04:00
rudi	50a4279446	Update README Build and Test j3270 / Build JAR & Run Tests (Java 21) (push) Successful in 30s Details Build and Test j3270 / Build JAR & Run Tests (Java 17) (push) Successful in 33s Details Build and Test j3270 / Build JAR & Run Tests (Java 11) (push) Successful in 24s Details	2026-09-06 11:31:35 -04:00
rudi	6331e0108b	Update tests and Status/UI Build and Test j3270 / Build JAR & Run Tests (Java 17) (push) Successful in 26s Details Build and Test j3270 / Build JAR & Run Tests (Java 11) (push) Successful in 1m5s Details Build and Test j3270 / Build JAR & Run Tests (Java 21) (push) Successful in 1m10s Details	2026-09-06 09:53:43 -04:00
rudi	79d493c24d	Update builder Build and Test j3270 / Build JAR & Run Tests (Java 11) (push) Successful in 1m12s Details Build and Test j3270 / Build JAR & Run Tests (Java 21) (push) Successful in 1m12s Details Build and Test j3270 / Build JAR & Run Tests (Java 17) (push) Successful in 4m22s Details	2026-09-05 14:11:08 -04:00
rudi	74e30d1ead	IBM-DYNAMIC tweaking Build and Test j3270 / Build JAR & Run Tests (push) Successful in 1m25s Details	2026-09-04 20:58:19 -04:00
rudi	cbb310b889	GOCA fixing Build and Test j3270 / Build JAR & Run Tests (push) Successful in 1m22s Details	2026-09-04 14:34:01 -04:00
rudi	6296cf4341	IBM-DYNAMIC Release j3270 / Build & Publish Release (push) Successful in 1m23s Details Build and Test j3270 / Build JAR & Run Tests (push) Successful in 1m28s Details	2026-09-03 16:43:22 -04:00
rudi	db6043cb39	Handle HeadlessException in UI tests for automated testing Release j3270 / Build & Publish Release (push) Successful in 1m28s Details Build and Test j3270 / Build JAR & Run Tests (push) Successful in 1m31s Details	2026-09-01 10:17:29 -04:00
rudi	161364a95f	Overnight churnings Build and Test j3270 / Build JAR & Run Tests (push) Failing after 1m23s Details Release j3270 / Build & Publish Release (push) Failing after 1m15s Details	2026-09-01 09:45:40 -04:00
rudi	a56aa5f059	More NVT stuff Build and Test j3270 / Build JAR & Run Tests (push) Successful in 1m24s Details	2026-08-31 15:54:26 -04:00
rudi	7b5bc7ec11	Add consts and update tests Build and Test j3270 / Build JAR & Run Tests (push) Successful in 1m20s Details	2026-08-31 10:22:12 -04:00
rudi	a9956298e2	More functional changes and UI adaptations from overnight	2026-08-31 09:16:32 -04:00
rudi	a43969da08	Fix aid keys Build and Test j3270 / Build JAR & Run Tests (push) Successful in 1m11s Details Release j3270 / Build & Publish Release (push) Successful in 1m10s Details	2026-08-31 00:11:30 +00:00
rudi	e18d2f436f	Adjust clearing	2026-08-31 00:00:13 +00:00
rudi	27976dd31f	Add missing menus back	2026-08-30 23:46:29 +00:00
rudi	a3c4b95379	Fix ADMDRAW targetting	2026-08-30 23:33:33 +00:00
rudi	3a576b79b4	Phase 6 Build and Test j3270 / Build JAR & Run Tests (push) Successful in 1m4s Details	2026-08-28 13:57:09 -04:00
rudi	40ebd40fe2	Phase 5	2026-08-28 13:36:02 -04:00
rudi	f310d39fc1	Phase 4	2026-08-28 13:26:40 -04:00
rudi	a44ea00d3a	Phase 3	2026-08-28 13:11:28 -04:00
rudi	037ad1f941	Phase 2	2026-08-28 13:00:12 -04:00
rudi	79258c0c44	Phase 1	2026-08-28 12:38:56 -04:00
rudi	ff5dfda343	IND testing Build and Test j3270 / Build JAR & Run Tests (push) Successful in 1m5s Details	2026-08-27 22:42:40 -04:00
rudi	8654b72d8c	IND testing Build and Test j3270 / Build JAR & Run Tests (push) Successful in 1m5s Details	2026-08-27 22:08:01 -04:00
rudi	2e9b6d325a	GDDM Tweaking Build and Test j3270 / Build JAR & Run Tests (push) Successful in 41s Details	2026-08-27 18:14:39 +00:00
rudi	540a8dfd1d	GDDM Tweaking	2026-08-27 17:05:23 +00:00
rudi	ebc0b5ae6f	Fix IND$FILE Build and Test j3270 / Build JAR & Run Tests (push) Successful in 45s Details	2026-08-26 00:04:30 +00:00
rudi	bcfd4ba2e0	Antialiasing fixes Build and Test j3270 / Build JAR & Run Tests (push) Successful in 40s Details	2026-08-25 23:31:14 +00:00
rudi	2584f4289f	Admdraw appears	2026-08-25 22:50:12 +00:00
rudi	3526e682a1	Admops fix Build and Test j3270 / Build JAR & Run Tests (push) Successful in 1m1s Details	2026-08-25 22:22:20 +00:00
rudi	7eebd2107c	Refactor Build and Test j3270 / Build JAR & Run Tests (push) Successful in 44s Details	2026-08-25 16:05:12 +00:00
rudi	36b93df986	Antialiasing and fill fixes Build and Test j3270 / Build JAR & Run Tests (push) Successful in 1m8s Details	2026-08-25 15:48:36 +00:00
rudi	dbe0cdaa89	Keep par0dy with a3270 Build and Test j3270 / Build JAR & Run Tests (push) Failing after 1m3s Details	2026-08-25 01:12:50 +00:00
rudi	b5a4978b24	Keep par0dy with a3270 Build and Test j3270 / Build JAR & Run Tests (push) Successful in 1m1s Details	2026-08-24 20:46:45 +00:00
rudi	d2bdb9bb0a	Lightpen on Build and Test j3270 / Build JAR & Run Tests (push) Successful in 1m8s Details	2026-08-24 16:55:38 +00:00
rudi	e28b7dc30a	Lightpen on Build and Test j3270 / Build JAR & Run Tests (push) Successful in 37s Details	2026-08-24 16:45:55 +00:00
rudi	d9df1052a1	Lightpen on	2026-08-24 16:35:24 +00:00
rudi	0837de8db3	ADMOPSLA and ADMCHART are happier Build and Test j3270 / Build JAR & Run Tests (push) Successful in 1m7s Details	2026-08-23 01:27:45 +00:00
rudi	42eef519a6	Repo clean Build and Test j3270 / Build JAR & Run Tests (push) Successful in 1m4s Details	2026-08-22 13:17:31 +00:00
rudi	b57d8f960d	How had I not tested on Linux before Build and Test j3270 / Build JAR & Run Tests (push) Successful in 45s Details	2026-08-21 21:00:10 -04:00
rudi	09600260b5	Add some cleaning Build and Test j3270 / Build JAR & Run Tests (push) Successful in 37s Details	2026-08-21 18:56:37 -04:00
rudi	00c7b0770c	Missed a folder! Build and Test j3270 / Build JAR & Run Tests (push) Successful in 46s Details	2026-08-21 16:35:18 -04:00