Add Gitea Actions workflow for Windows builds

.gitea/workflows/build.yml

@@ -0,0 +1,47 @@
+name: Build Windows
+
+on:
+  push:
+    branches:
+      - main
+      - dev
+
+jobs:
+  build-windows:
+    runs-on: windows
+    
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+      
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+      
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          profile: minimal
+          override: true
+      
+      - name: Install dependencies (root)
+        run: npm install
+      
+      - name: Install dependencies (cinny)
+        working-directory: ./cinny
+        run: npm install
+      
+      - name: Build Tauri app
+        run: npm run tauri build
+      
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: windows-installer
+          path: |
+            src-tauri/target/release/bundle/msi/*.msi
+            src-tauri/target/release/bundle/nsis/*-setup.exe