WIP: run Frame Control on Linux and Windows

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

.github/workflows/checks.yml

@@ -31,4 +31,26 @@ jobs:
       - name: Server tests
         run: python -m unittest discover -s tests -v
       - name: App syntax
-        run: node --check app/main.js && node --check app/build/make-icon.js
+        run: node --check app/main.js && node --check app/build/make-icon.js && node --check app/build/fetch-python.js
+
+  # The server runs on each desktop OS the app ships for. Windows uses the same
+  # Python version the app bundles (app/build/fetch-python.js).
+  server-tests:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: windows-latest
+            python: "3.12"
+          - os: macos-latest
+            python: "3.12"
+          - os: ubuntu-latest
+            python: "3.13"
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python }}
+      - name: Server tests
+        run: python -m unittest discover -s tests -v

.github/workflows/release.yml

@@ -0,0 +1,58 @@
+name: release
+
+# Pushing a v* tag builds Frame Control for macOS, Windows and Linux and attaches
+# the installers to that tag's GitHub release (created as a draft if missing).
+on:
+  push:
+    tags: ["v*"]
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: macos-latest
+            script: dist
+            files: app/dist/*.dmg app/dist/*.zip
+          - os: windows-latest
+            script: dist:win
+            files: app/dist/*.exe app/dist/*.zip
+          - os: ubuntu-latest
+            script: dist:linux
+            files: app/dist/*.AppImage app/dist/*.deb
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: "24"
+      - name: Build
+        working-directory: app
+        shell: bash
+        run: npm ci && npm run ${{ matrix.script }}
+        env:
+          CSC_IDENTITY_AUTO_DISCOVERY: "false"
+      - name: Upload to the release
+        if: startsWith(github.ref, 'refs/tags/')
+        shell: bash
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: |
+          tag="${GITHUB_REF_NAME}"
+          gh release view "$tag" >/dev/null 2>&1 || gh release create "$tag" --draft --title "Frame Control ${tag#v}" --notes ""
+          gh release upload "$tag" ${{ matrix.files }} --clobber
+      - uses: actions/upload-artifact@v4
+        with:
+          name: frame-control-${{ matrix.os }}
+          path: |
+            app/dist/*.dmg
+            app/dist/*.exe
+            app/dist/*.zip
+            app/dist/*.AppImage
+            app/dist/*.deb
+          if-no-files-found: ignore