ci: add GitHub Actions for tests and PyPI publishing

- test.yml: run pytest on Python 3.11/3.12/3.13 for push and PRs
- publish.yml: publish to PyPI via OIDC trusted publishing on release

Author: introfini

.github/workflows/publish.yml

@@ -0,0 +1,21 @@
+name: Publish to PyPI
+
+on:
+  release:
+    types: [published]
+
+permissions:
+  id-token: write
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    environment: pypi
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: astral-sh/setup-uv@v4
+
+      - run: uv build
+
+      - uses: pypa/gh-action-pypi-publish@release/v1

.github/workflows/test.yml

@@ -0,0 +1,24 @@
+name: Tests
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.11", "3.12", "3.13"]
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: astral-sh/setup-uv@v4
+
+      - run: uv python install ${{ matrix.python-version }}
+
+      - run: uv sync --dev
+
+      - run: uv run pytest