Add GitHub Actions workflow for Tauri test build

.github/workflows/test-build.yml

@@ -0,0 +1,77 @@
+name: 'Build Tauri Artifacts'
+
+on:
+  workflow_dispatch: # Allows manual triggering
+
+jobs:
+  build-tauri:
+    permissions:
+      contents: write
+    runs-on: ubuntu-22.04
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: lts/*
+          cache: 'npm'
+
+      - name: Get version (for logging / artifact name)
+        id: get-version
+        run: |
+          VERSION=$(node -p "require('./package.json').version")
+          echo "version=$VERSION" >> $GITHUB_OUTPUT
+          echo "Package version: $VERSION"
+
+      - name: Install Rust stable
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt, clippy
+
+      - name: Rust cache
+        uses: swatinem/rust-cache@v2
+        with:
+          workspaces: './src-tauri -> target'
+
+      - name: Install system dependencies (Ubuntu 22.04)
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y \
+            libwebkit2gtk-4.1-dev \
+            libjavascriptcoregtk-4.1-0 \
+            libjavascriptcoregtk-4.1-dev \
+            libappindicator3-dev \
+            librsvg2-dev \
+            patchelf \
+            build-essential \
+            curl \
+            wget \
+            file \
+            libssl-dev \
+            libgtk-3-dev
+
+      - name: Install frontend dependencies
+        run: npm ci
+
+      - name: Build Tauri app (no release)
+        uses: tauri-apps/tauri-action@v0
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # optional but harmless
+          TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
+          TAURI_SIGNING_PRIVATE_KEY_PASSWORD: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY_PASSWORD }}
+        with:
+          projectPath: '.'
+          includeDebug: false
+          includeRelease: true
+          includeUpdaterJson: true
+          tauriScript: 'npm run tauri'
+
+      - name: Upload Tauri bundles as artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: tauri-bundles-${{ steps.get-version.outputs.version }}
+          path: |
+            src-tauri/target/release/bundle/**