Jason
11aa590cf2
Resolve all 374 ruff errors across 36 Python files (E501, E702, E722, E741, F821, F841, invalid-syntax) bringing `ruff check .` to zero errors repo-wide with line-length=100. Rewrite CI workflow to use uv for dependency management, whole-repo `ruff check .`, py_compile syntax gate, and merged python-tests job. Add pyproject.toml with ruff config and uv dependency groups. CI structure proposed by hcm444.
