add macos CI build

.github/workflows/macbuild.yml

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+# macOS CI — builds a .app bundle and packages it as a .dmg
+name: MacOS CI
+
+on:
+  push:
+    branches:
+      - '*'
+  pull_request:
+    branches:
+      - '*'
+
+jobs:
+  build:
+    runs-on: macos-latest  # arm64 (Apple Silicon)
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: '3.10'
+
+    - name: Build macOS App
+      run: bash macbuild.sh
+
+    - name: Upload build artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: DMG Package
+        path: dist/*.dmg

macbuild.sh

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+#!/bin/bash
+# macOS build script for DroneCAN GUI Tool
+# Produces a .app bundle and a .dmg installer in the dist/ folder.
+# Requirements: Python 3.9+
+
+set -e
+
+python3 --version
+
+# Create and activate a clean virtual environment
+python3 -m venv venv
+source venv/bin/activate
+
+python3 -m pip install -U pip
+python3 -m pip install -U py2app
+python3 -m pip install -U pymavlink
+python3 -m pip install -U python-can
+python3 -m pip install -U .
+
+APP_NAME="DroneCAN GUI Tool"
+
+# Clean previous build artifacts
+rm -rf build dist
+
+# Build the .app bundle with py2app
+python3 setup_mac.py py2app
+
+# Package the .app into a .dmg
+hdiutil create \
+    -volname "${APP_NAME}" \
+    -srcfolder "dist/${APP_NAME}.app" \
+    -ov \
+    -format UDZO \
+    "dist/DroneCAN_GUI_Tool.dmg"
+
+echo "Build complete. Artifact: dist/DroneCAN_GUI_Tool.dmg"
+ls -lh dist/

setup_mac.py

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+"""
+py2app build configuration for macOS .app bundle.
+Usage: python3 setup_mac.py py2app
+"""
+import os
+import site
+
+PACKAGE_NAME = 'dronecan_gui_tool'
+APP_NAME = 'DroneCAN GUI Tool'
+
+# Locate the dronecan dsdl_specs data files
+site_packages = site.getsitepackages()[0]
+dsdl_specs = os.path.join(site_packages, 'dronecan', 'dsdl_specs')
+
+OPTIONS = {
+    'argv_emulation': False,
+    'packages': [
+        PACKAGE_NAME,
+        'dronecan',
+        'qtwidgets',
+        'pyqtgraph',
+        'qtawesome',
+        'qtconsole',
+        'ipykernel',
+        'jupyter_client',
+        'zmq',
+        'pygments',
+        'traitlets',
+    ],
+    'includes': [
+        'PyQt5',
+        'PyQt5.QtCore',
+        'PyQt5.QtGui',
+        'PyQt5.QtWidgets',
+        'PyQt5.QtSvg',
+        'PyQt5.QtPrintSupport',
+        'PyQt5.QtSerialPort',
+    ],
+    'resources': [dsdl_specs],
+    'iconfile': 'icons/logo.icns',
+    'plist': {
+        'CFBundleName': APP_NAME,
+        'CFBundleDisplayName': APP_NAME,
+        'CFBundleIdentifier': 'org.dronecan.gui-tool',
+        'NSHighResolutionCapable': True,
+    },
+}
+
+from setuptools import setup
+
+setup(
+    name=APP_NAME,
+    app=['bin/dronecan_gui_tool'],
+    options={'py2app': OPTIONS},
+    setup_requires=['py2app'],
+    data_files=[('icons', ['icons/logo.icns'])],
+)