Add GitHub Actions CI for cross-platform testing

Author: maskedsyntax

.github/workflows/ci.yml

@@ -0,0 +1,43 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  test:
+    name: Test on ${{ matrix.os }} / ${{ matrix.python-version }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        python-version: ["3.8", "3.10", "3.12"]
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install uv
+
+    - name: Install libomp (macOS)
+      if: runner.os == 'macOS'
+      run: brew install libomp
+
+    - name: Build and install
+      run: uv pip install --system -e .
+
+    - name: Install pytest
+      run: uv pip install --system pytest
+
+    - name: Run tests
+      run: pytest

.gitignore

@@ -11,3 +11,5 @@ dist/
 .pytest_cache/
 install.log
 GEMINI.md
+TODO.md
+verify_omp.py