ci: Add PyPI publish workflow + build script for Python SDK

- .github/workflows/pypi-publish.yml: GitHub Actions workflow to publish to PyPI
  - Publishes on release (automatic)
  - Manual dispatch for test/prod
  - Test package installation verification
- python/build_verify.sh: Local build script

Requires secrets (not yet configured):
- PYPI_TOKEN: PyPI API token (pypi.org)
- PYPI_TEST_TOKEN: Test PyPI token (test.pypi.org)

Author: Das-rebel

.github/workflows/pypi-publish.yml

@@ -0,0 +1,102 @@
+name: Publish Python SDK to PyPI
+
+on:
+  release:
+    types: [created]
+  workflow_dispatch:
+    inputs:
+      environment:
+        description: 'Environment'
+        required: true
+        default: 'test'
+        type: choice
+        options:
+          - test
+          - prod
+
+jobs:
+  publish-testpypi:
+    if: github.event.inputs.environment == 'test' || (github.event_name == 'workflow_dispatch' && github.event.inputs.environment == 'test')
+    runs-on: ubuntu-latest
+    environment:
+      name: testpypi
+      url: https://test.pypi.org/projects/a3m-router
+    
+    steps:
+      - uses: actions/checkout@v4
+      
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+      
+      - name: Install dependencies
+        run: |
+          python -m pip install build twine
+      
+      - name: Build package
+        run: |
+          cd python
+          python -m build
+      
+      - name: Publish to Test PyPI
+        env:
+          TWINE_USERNAME: __token__
+          TWINE_PASSWORD: ${{ secrets.PYPI_TEST_TOKEN }}
+        run: |
+          cd python
+          python -m twine upload --repository testpypi dist/*
+
+  publish-pypi:
+    if: github.event.inputs.environment == 'prod' || github.event_name == 'release'
+    runs-on: ubuntu-latest
+    environment:
+      name: pypi
+      url: https://pypi.org/projects/a3m-router
+    
+    steps:
+      - uses: actions/checkout@v4
+      
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+      
+      - name: Install dependencies
+        run: |
+          python -m pip install build twine
+      
+      - name: Build package
+        run: |
+          cd python
+          python -m build
+      
+      - name: Publish to PyPI
+        env:
+          TWINE_USERNAME: __token__
+          TWINE_PASSWORD: ${{ secrets.PYPI_TOKEN }}
+        run: |
+          cd python
+          python -m twine upload dist/*
+
+  test-package:
+    runs-on: ubuntu-latest
+    needs: publish-testpypi
+    
+    steps:
+      - uses: actions/checkout@v4
+      
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+      
+      - name: Install from Test PyPI
+        env:
+          TWINE_PASSWORD: ${{ secrets.PYPI_TEST_TOKEN }}
+        run: |
+          pip install --index-url https://test.pypi.org/simple/ a3m-router
+      
+      - name: Test import
+        run: |
+          python -c "from a3m import A3MRouter, __version__; print(f'A3M Router SDK v{__version__} installed successfully!')"

python/build_verify.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+# Build and verify Python SDK
+set -e
+
+echo "=== Building A3M Router Python SDK v2.2.0 ==="
+cd "$(dirname "$0")"
+
+echo "1. Installing build dependencies..."
+pip install build twine 2>/dev/null || pip3 install build twine
+
+echo "2. Cleaning old builds..."
+rm -rf dist/ build/ *.egg-info
+
+echo "3. Building package..."
+python -m build
+
+echo "4. Checking package..."
+python -m twine check dist/*
+
+echo "5. Listing built files..."
+ls -lh dist/
+
+echo ""
+echo "=== Build complete! ==="
+echo "To publish to Test PyPI:"
+echo "  cd python && python -m twine upload --repository testpypi dist/*"
+echo ""
+echo "To publish to PyPI:"
+echo "  cd python && python -m twine upload dist/*"
+echo ""
+echo "To install locally:"
+echo "  pip install dist/a3m_router-*.whl"