feat: Add electron-packager and GitHub Actions for desktop builds

- Add electron-packager as alternative build tool
- Create GitHub Actions workflow for automated Windows builds
- Update .gitignore to exclude dist folder
- Add comprehensive README with installation and usage instructions
- Successfully built Windows executable (210MB)

.github/workflows/build-desktop.yml

@@ -0,0 +1,53 @@
+name: Build Desktop App
+
+on:
+  push:
+    branches: [ main ]
+    tags:
+      - 'v*'
+  pull_request:
+    branches: [ main ]
+  workflow_dispatch:
+
+jobs:
+  build-windows:
+    runs-on: windows-latest
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+      
+      - name: Install dependencies
+        run: npm ci
+      
+      - name: Build with electron-builder
+        run: npm run build
+        env:
+          CSC_IDENTITY_AUTO_DISCOVERY: false
+      
+      - name: Upload installer artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: windows-installer
+          path: |
+            dist/*.exe
+            dist/*.zip
+          retention-days: 30
+      
+      - name: Create Release (on tag)
+        if: startsWith(github.ref, 'refs/tags/v')
+        uses: softprops/action-gh-release@v1
+        with:
+          files: |
+            dist/*.exe
+            dist/*.zip
+          draft: false
+          prerelease: false
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}