Add CI: headless tests on every PR, DMG build artifact on main

.github/workflows/ci.yml

@@ -0,0 +1,52 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  test:
+    name: Headless tests
+    runs-on: macos-14
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+          cache: pip
+
+      - name: Install dependencies
+        run: pip install -r requirements.txt
+
+      - name: Bridge tests (mappings, key dispatch, BLE lifecycle)
+        run: python tests/test_bridge.py
+
+      - name: DSU server tests (cemuhook protocol over UDP)
+        run: python tests/test_dsu.py
+
+  build:
+    name: Build .app + DMG
+    runs-on: macos-14
+    needs: test
+    # Building is slower — only on main and manual runs
+    if: github.event_name != 'pull_request'
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+          cache: pip
+
+      - name: Build DMG
+        run: ./build_dmg.sh
+
+      - name: Upload DMG artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: Switch2Bridge-Installer
+          path: dist/Switch2Bridge-Installer.dmg
+          if-no-files-found: error

README.md

@@ -4,6 +4,7 @@
 
 A Python menubar app that connects to the Switch 2 Pro Controller via BLE and translates inputs to keyboard presses for use with emulators like Ryujinx.
 
+[![CI](https://github.com/mlstr0m/switch2bridge-macos/actions/workflows/ci.yml/badge.svg)](https://github.com/mlstr0m/switch2bridge-macos/actions/workflows/ci.yml)
 [![macOS](https://img.shields.io/badge/macOS-Ventura%2B-blue?logo=apple)](https://www.apple.com/macos)
 [![Python](https://img.shields.io/badge/Python-3.9%2B-green?logo=python)](https://python.org)
 [![License](https://img.shields.io/badge/License-MIT-yellow)](LICENSE)

build_dmg.sh

@@ -133,5 +133,7 @@ echo "   To test: open dist/${DMG_NAME}.dmg"
 echo "═══════════════════════════════════════════════════════════"
 echo ""
 
-# Open in Finder
-open dist
+# Open in Finder (skip on CI / headless)
+if [ -z "${CI:-}" ]; then
+    open dist
+fi