Add GitHub Actions for automated DMG builds

Features:
- Build DMG for both arm64 (Apple Silicon) and x86_64 (Intel)
- Automatic release creation when tags are pushed
- Multi-architecture support using matrix strategy
- Upload artifacts to GitHub releases

Workflow:
1. Triggered only on tag push (e.g., v1.0.0)
2. Build job: Compiles for arm64 and x86_64 in parallel
3. Release job: Creates GitHub release with both DMGs

Build Scripts Updates:
- Support VERSION environment variable
- Dynamic version in Info.plist
- Dynamic version in DMG filename

Release Artifacts:
- uskey-v{version}-arm64.dmg (Apple Silicon)
- uskey-v{version}-x86_64.dmg (Intel)

Files:
- .github/workflows/release.yml: CI/CD workflow
- build-app.sh: Support VERSION env var
- build-dmg.sh: Support VERSION env var

Usage:

🤖 Generated with [Qoder](https://qoder.com)

.github/workflows/release.yml

@@ -0,0 +1,143 @@
+name: Build and Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+    name: Build DMG for ${{ matrix.arch }}
+    runs-on: macos-latest
+    strategy:
+      matrix:
+        arch: [arm64, x86_64]
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      
+      - name: Setup Xcode
+        uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: latest-stable
+      
+      - name: Get version from tag
+        id: get_version
+        run: echo "VERSION=${GITHUB_REF#refs/tags/v}" >> $GITHUB_OUTPUT
+      
+      - name: Build for ${{ matrix.arch }}
+        env:
+          VERSION: ${{ steps.get_version.outputs.VERSION }}
+        run: |
+          echo "Building for ${{ matrix.arch }}"
+          
+          # Build with specific architecture
+          if [ "${{ matrix.arch }}" = "x86_64" ]; then
+            swift build -c release --arch x86_64
+          else
+            swift build -c release --arch arm64
+          fi
+      
+      - name: Create app bundle and DMG
+        env:
+          VERSION: ${{ steps.get_version.outputs.VERSION }}
+        run: |
+          chmod +x build-app.sh build-dmg.sh create-icon.sh
+          ./build-app.sh
+          ./build-dmg.sh
+      
+      - name: Rename DMG with architecture
+        run: |
+          VERSION=${{ steps.get_version.outputs.VERSION }}
+          ARCH=${{ matrix.arch }}
+          mv .build/release/uskey-v${VERSION}.dmg .build/release/uskey-v${VERSION}-${ARCH}.dmg
+      
+      - name: Upload DMG artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: uskey-v${{ steps.get_version.outputs.VERSION }}-${{ matrix.arch }}
+          path: .build/release/uskey-v${{ steps.get_version.outputs.VERSION }}-${{ matrix.arch }}.dmg
+          retention-days: 5
+
+  release:
+    name: Create Release
+    needs: build
+    runs-on: ubuntu-latest
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      
+      - name: Get version from tag
+        id: get_version
+        run: echo "VERSION=${GITHUB_REF#refs/tags/v}" >> $GITHUB_OUTPUT
+      
+      - name: Download all artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: ./artifacts
+      
+      - name: Display structure of downloaded files
+        run: ls -R ./artifacts
+      
+      - name: Prepare release files
+        run: |
+          mkdir -p release-files
+          find ./artifacts -name "*.dmg" -exec cp {} release-files/ \;
+          ls -lh release-files/
+      
+      - name: Create Release
+        uses: softprops/action-gh-release@v1
+        with:
+          name: Release v${{ steps.get_version.outputs.VERSION }}
+          body: |
+            ## uskey v${{ steps.get_version.outputs.VERSION }}
+            
+            ### Downloads
+            
+            - **Apple Silicon (M1/M2/M3/M4)**: `uskey-v${{ steps.get_version.outputs.VERSION }}-arm64.dmg`
+            - **Intel**: `uskey-v${{ steps.get_version.outputs.VERSION }}-x86_64.dmg`
+            
+            ### Installation
+            
+            1. Download the appropriate DMG for your Mac
+            2. Open the DMG file
+            3. Drag `uskey.app` to Applications folder
+            4. Launch from Applications or Spotlight
+            5. Grant Accessibility permissions when prompted
+            
+            ### What's New
+            
+            See [CHANGELOG](https://github.com/${{ github.repository }}/blob/main/CHANGELOG.md) for details.
+            
+            ### Features
+            
+            - ✅ Menu bar GUI with enable/disable toggle (Enabled ✅/❌)
+            - ✅ JSON-based configuration system
+            - ✅ File-based logging with debug support
+            - ✅ Custom key remapping via CGEventTap
+            - ✅ Auto-initialization after permission grant
+            - ✅ Custom app icon support
+            
+            ### Requirements
+            
+            - macOS 13.0 or later
+            
+            ### Documentation
+            
+            - [User Guide](https://github.com/${{ github.repository }}/blob/main/README.md)
+            - [Build Instructions](https://github.com/${{ github.repository }}/blob/main/BUILD.md)
+            - [Debugging Guide](https://github.com/${{ github.repository }}/blob/main/DEBUG.md)
+            
+            ---
+            🤖 Built with [Qoder](https://qoder.com)
+          files: |
+            release-files/*.dmg
+          draft: false
+          prerelease: false
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

build-app.sh

@@ -4,6 +4,7 @@ set -e
 echo "Building uskey.app..."
 
 APP_NAME="uskey"
+VERSION="${VERSION:-1.0.0}"
 BUILD_DIR=".build/release"
 APP_DIR="$BUILD_DIR/$APP_NAME.app"
 CONTENTS_DIR="$APP_DIR/Contents"
@@ -57,7 +58,7 @@ cat > "$CONTENTS_DIR/Info.plist" << EOF
     <key>CFBundlePackageType</key>
     <string>APPL</string>
     <key>CFBundleShortVersionString</key>
-    <string>1.0.0</string>
+    <string>$VERSION</string>
     <key>CFBundleVersion</key>
     <string>1</string>
     <key>LSMinimumSystemVersion</key>

build-dmg.sh

@@ -2,11 +2,11 @@
 set -e
 
 APP_NAME="uskey"
-VERSION="1.0.0"
+VERSION="${VERSION:-1.0.0}"
 BUILD_DIR=".build/release"
 APP_DIR="$BUILD_DIR/$APP_NAME.app"
 DMG_DIR=".build/dmg"
-DMG_NAME="$APP_NAME-$VERSION.dmg"
+DMG_NAME="$APP_NAME-v$VERSION.dmg"
 DMG_TEMP="$DMG_DIR/temp.dmg"
 DMG_FINAL="$BUILD_DIR/$DMG_NAME"
 
@@ -15,7 +15,7 @@ if [ ! -d "$APP_DIR" ]; then
     exit 1
 fi
 
-echo "Creating DMG for $APP_NAME..."
+echo "Creating DMG for $APP_NAME v$VERSION..."
 
 echo "Step 1: Preparing DMG directory..."
 rm -rf "$DMG_DIR"