CI: "Build fetch" job fails on all PRs due to stale uv.lock

[ElliotJLT]

Description

The Python / Build fetch CI job is currently failing on all open PRs with:

The lockfile at `uv.lock` needs to be updated, but `--locked` was provided. To update the lockfile, run `uv lock`.

This appears to be a repo-wide issue on main — the uv.lock file is out of sync with pyproject.toml dependencies in src/fetch/.

Impact

• Every open PR shows a failing check regardless of what it changes
• The Test jobs (which actually validate code changes) still pass
• The Build failure blocks the CI status from going fully green

Affected PRs (sample)

• fix(fetch): block autonomous fetching when robots.txt returns 5xx #3547, Add Help an Agent MCP server (human judgment for AI agents) #3546, fix(git): add missing argument injection guards #3545, feat(everything): add tool annotations to all 18 tools #3543 — all show Build fetch failure

Fix

Run uv lock in src/fetch/ and commit the updated uv.lock to main.