fix(ci): publish Python wheel to GitHub Releases

GitHub Packages does not support PyPI registry, so twine upload with
--skip-existing always failed. Replace with gh release create that
uploads the built wheel as a GitHub Release asset.

Install via:
  pip install https://github.com/selfpatch/ros2_medkit_clients/releases/download/py-v0.1.0/ros2_medkit_client-0.1.0-py3-none-any.whl

Removes broken version-check job and twine dependency.

Closes #9

Author: bburda

.github/workflows/python-ci.yml

@@ -59,8 +59,7 @@ jobs:
     if: github.event_name == 'push' && github.ref == 'refs/heads/main'
     runs-on: ubuntu-latest
     permissions:
-      packages: write
-      contents: read
+      contents: write
     defaults:
       run:
         working-directory: clients/python
@@ -77,7 +76,7 @@ jobs:
           node-version: '20'
 
       - name: Install build tools
-        run: pip install pipx build twine
+        run: pip install pipx build
 
       - name: Generate client from spec
         working-directory: .
@@ -89,8 +88,28 @@ jobs:
       - name: Build wheel
         run: python -m build
 
-      - name: Publish to GitHub Packages
-        run: twine upload --skip-existing --repository-url https://pypi.pkg.github.com/selfpatch/ dist/*
+      - name: Read version
+        id: version
+        run: |
+          VERSION=$(python3 -c "
+          import re, pathlib
+          text = pathlib.Path('pyproject.toml').read_text()
+          m = re.search(r'^version\s*=\s*\"([^\"]+)\"', text, re.MULTILINE)
+          print(m.group(1))
+          ")
+          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
+
+      - name: Publish wheel to GitHub Release
         env:
-          TWINE_USERNAME: __token__
-          TWINE_PASSWORD: ${{ secrets.GITHUB_TOKEN }}
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          TAG="py-v${{ steps.version.outputs.version }}"
+
+          # Delete existing release if same version (overwrite)
+          gh release delete "$TAG" --yes 2>/dev/null || true
+
+          # Create release and upload wheel
+          gh release create "$TAG" \
+            --title "Python client v${{ steps.version.outputs.version }}" \
+            --notes "Install: \`pip install https://github.com/selfpatch/ros2_medkit_clients/releases/download/${TAG}/$(ls dist/*.whl | head -1 | xargs basename)\`" \
+            dist/*.whl