- Add custom deserializer for runs-on field to handle both string and array formats
- Update Job struct to use Vec<String> instead of String for runs-on field
- Modify executor to extract first element from runs-on array for runner selection
- Add test workflow to verify both string and array formats work correctly
- Maintain backwards compatibility with existing string-based workflows
Fixes issue where workflows with runs-on: [self-hosted, ubuntu, small] format
would fail with 'invalid type: sequence, expected a string' error.
This change aligns with GitHub Actions specification which supports:
- String format: runs-on: ubuntu-latest
- Array format: runs-on: [self-hosted, ubuntu, small]
- Move test workflows to tests/workflows/
- Move GitLab CI fixtures to tests/fixtures/gitlab-ci/
- Move test scripts to tests/scripts/
- Move Podman testing docs to tests/
- Update paths in test scripts and documentation
- Delete MANUAL_TEST_CHECKLIST.md as requested
- Update tests/README.md to reflect new organization
