Fixes: 1) Ensure logging conditions are guarded by proper vendor and attribute checks; 2) Correct `__str__` method fallback logic for `VendorManager`;
Extra: 1) Update dependencies including `docutils` to 0.21.2, `psutil` to 7.1.2, and `pip` to >=25.3; 2) Clean up `pyproject.toml` and `uv.lock` with refined version specifications and added new entries; 3) Refactor import statements and remove redundant code; 4) Upgrade Python version to 3.13 in config.
