Add GitHub actions

.github/workflows/python-ci.yml

@@ -0,0 +1,101 @@
+name: Python CI
+permissions:
+  contents: read
+
+on:
+  push:
+    branches: [ main ]
+    paths:
+      - 'python/**'
+      - '.github/workflows/python-ci.yml'
+  pull_request:
+    paths:
+      - 'python/**'
+      - '.github/workflows/python-ci.yml'
+
+defaults:
+  run:
+    working-directory: ./python
+
+jobs:
+  lint-and-format:
+    name: Lint and Format Check
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Python 3.13
+      uses: actions/setup-python@v5
+      with:
+        python-version: '3.13'
+
+    - name: Install Poetry
+      uses: snok/install-poetry@76e04a911780d5b312d89783f7b1cd627778900a
+      with:
+        version: latest
+        virtualenvs-create: true
+        virtualenvs-in-project: true
+        installer-parallel: true
+
+    - name: Load cached venv
+      id: cached-poetry-dependencies
+      uses: actions/cache@v4
+      with:
+        path: ./python/.venv
+        key: venv-${{ runner.os }}-${{ hashFiles('**/poetry.lock') }}
+
+    - name: Install dependencies
+      if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
+      run: poetry install --no-interaction --no-root
+
+    - name: Install project
+      run: poetry install --no-interaction
+
+    - name: Run formatting check with tox
+      run: poetry run tox -e format
+
+    - name: Run linting with tox
+      run: poetry run tox -e lint
+
+  test:
+    name: Test Python ${{ matrix.python-version }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ['3.10', '3.11', '3.12', '3.13']
+        # Note: Python 3.14 is not yet available in GitHub Actions
+        # Will be added when it becomes available
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install Poetry
+      uses: snok/install-poetry@76e04a911780d5b312d89783f7b1cd627778900a
+      with:
+        version: latest
+        virtualenvs-create: true
+        virtualenvs-in-project: true
+        installer-parallel: true
+
+    - name: Load cached venv
+      id: cached-poetry-dependencies
+      uses: actions/cache@v4
+      with:
+        path: ./python/.venv
+        key: venv-${{ runner.os }}-${{ matrix.python-version }}-${{ hashFiles('**/poetry.lock') }}
+
+    - name: Install dependencies
+      if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
+      run: poetry install --no-interaction --no-root
+
+    - name: Install project
+      run: poetry install --no-interaction
+
+    - name: Run tests with tox
+      run: poetry run tox -e py$(echo ${{ matrix.python-version }} | tr -d '.')