feat: add GitHub Actions workflow for PyPI publishing and update CI (#4)

* feat: add GitHub Actions workflow for publishing to PyPI on release

- Introduced a new workflow that triggers on GitHub releases to automate the
publishing of Python packages to PyPI.
- Configured steps for checking out the code, setting up Python,
installing dependencies, building the package, and publishing it.
- Ensures that existing versions on PyPI do not cause failures during the
publish process.

* chore: update CI workflow to use latest actions versions

- Upgraded actions/checkout from v4 to v6 and actions/setup-python from v5 to v6
in the CI configuration.
- Ensures compatibility with the latest features and improvements in GitHub
Actions.

* chore: upgrade actions in CI workflow to latest versions

- Updated actions/checkout from v4 to v6 and actions/setup-python from v5 to v6 in the
publish-pypi.yml workflow.
- Ensures compatibility with the latest features and improvements in GitHub Actions.

Author: nomike

.github/workflows/ci.yml

@@ -13,9 +13,9 @@ jobs:
       matrix:
         python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install dependencies

.github/workflows/publish-pypi.yml

@@ -0,0 +1,37 @@
+# Publish to PyPI when a GitHub release is published.
+
+name: Publish to PyPI
+
+on:
+  release:
+    types: [published]
+
+permissions:
+  id-token: write  # Required for PyPI trusted publishing (OIDC)
+  contents: read
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    # Optional: uncomment to use a GitHub environment for approval gates
+    # environment: pypi
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Set up Python
+        uses: actions/setup-python@v6
+        with:
+          python-version: "3.12"
+
+      - name: Install build dependencies
+        run: python -m pip install --upgrade pip build
+
+      - name: Build package
+        run: python -m build
+
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          skip-existing: true  # Do not fail if this version is already published
+          verbose: true