The summary `uv.lock` had not been updated in the last few releases.
The CI is now refactored to use `uv sync --locked`, which fails when
the lockfile is out of sync with `pyproject.toml`.
Regenerate the lockfile so `uv sync --locked` passes again.
lint-git runs gitlint through uvx, which fetches it for that one command and
puts nothing in the runner's Python. lint-summary and test-summary sync from a
new src/summary/uv.lock, so the versions those jobs resolve are the versions in
the tree, which is what src/backend and src/agents already do. The agents sync
refuses source distributions, since that package installs no project of its own.
Follows suitenumerique/menshen#73.