Fix workflow: Add PYTHONPATH environment variable for tests and linting

- Set PYTHONPATH to include src/main/python directory
- Updated pyproject.toml package discovery settings
- This should resolve import issues in GitHub Actions

Author: valentinajemuovic

.github/workflows/commit-stage-monolith.yml

@@ -48,11 +48,13 @@ jobs:
 
     - name: Run Python Tests
       run: |
+        export PYTHONPATH="${PYTHONPATH}:$(pwd)/src/main/python"
         pytest src/test/python/ -v
       working-directory: monolith
 
     - name: Run Python Linting
       run: |
+        export PYTHONPATH="${PYTHONPATH}:$(pwd)/src/main/python"
         flake8 src/main/python/ --max-line-length=100 --extend-ignore=E203,W503
         black --check src/main/python/
         isort --check-only src/main/python/

monolith/pyproject.toml

@@ -48,6 +48,9 @@ test = [
 [tool.setuptools.packages.find]
 where = ["src/main/python"]
 
+[tool.setuptools.package-dir]
+"" = "src/main/python"
+
 [tool.pytest.ini_options]
 testpaths = ["src/test/python"]
 python_files = ["test_*.py", "*_test.py"]