ci: build the desktop app (Linux and Windows) automatically on release

Mirrors Guará's release workflow. No signing key needed here: Sabiá's updater
is the custom module in sabia-core, not the Tauri plugin.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

.gitea/workflows/release.yml

@@ -70,3 +70,37 @@ jobs:
           TOKEN: ${{ gitea.token }}
           API: ${{ gitea.server_url }}/api/v1/repos/${{ gitea.repository }}
         run: scripts/release-upload.sh "${{ gitea.ref_name }}" $(cat packages.txt)
+
+  gui:
+    name: App desktop (${{ matrix.platform }})
+    needs: release
+    runs-on: ubuntu-latest
+    env:
+      CARGO_TARGET_DIR: /opt/hostedtoolcache/cargo-target/sabia-release-gui
+    strategy:
+      fail-fast: false
+      matrix:
+        platform: [linux, windows]
+    steps:
+      - uses: actions/checkout@v7
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: actions/setup-node@v7
+        with:
+          node-version: 22
+      - name: Dependências do Tauri (Linux)
+        if: matrix.platform == 'linux'
+        timeout-minutes: 25
+        run: scripts/apt-install.sh ~/apt-cache libwebkit2gtk-4.1-dev libayatana-appindicator3-dev librsvg2-dev patchelf
+      - name: Ferramentas para compilação cruzada (Windows)
+        if: matrix.platform == 'windows'
+        run: |
+          apt-get update -qq
+          apt-get install -y -qq nsis lld llvm clang
+          command -v cargo-xwin >/dev/null || cargo install cargo-xwin --locked
+      - name: Compila e empacota
+        run: scripts/build-gui.sh "${{ matrix.platform }}"
+      - name: Anexa à release
+        env:
+          TOKEN: ${{ gitea.token }}
+          API: ${{ gitea.server_url }}/api/v1/repos/${{ gitea.repository }}
+        run: scripts/release-upload.sh "${{ gitea.ref_name }}" dist-gui/*