feat: add CI/CD workflows for npm and PyPI auto-publish on tag

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-Claude)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

.gitea/workflows/publish-pypi.yml

@@ -0,0 +1,32 @@
+name: Publish PyPI package
+
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    env:
+      TWINE_USERNAME: __token__
+      TWINE_PASSWORD: ${{ secrets.PYPI_TOKEN }}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Extract version from tag
+        run: |
+          echo "VERSION=$(echo $GITHUB_REF_NAME | sed 's/^v//')" >> $GITHUB_ENV
+
+      - name: Update version in pyproject.toml
+        run: |
+          cd packages/sdk-python
+          sed -i "s/^version = .*/version = \"$VERSION\"/" pyproject.toml
+
+      - name: Build and publish to PyPI
+        run: |
+          cd packages/sdk-python
+          pip install build twine
+          python -m build
+          twine upload dist/*