chore: remove repo-root queue.py proof-of-concept

[tmgbedu]

What

Deletes the repo-root queue.py proof-of-concept script (repo root only — copies under .claude/worktrees and .venv are untouched).

References

None to remove. queue.py is a standalone if __name__ == "__main__" demo (run via python queue.py) with no importers:

• No import queue / from queue import ... anywhere in the codebase resolves to this module (nothing imports it at all — stdlib or otherwise).
• The only queue.py mention was a self-referential comment inside the file itself.
• The docs hit docs/queues.md → config/queue.py refers to a config-file example, not this root POC — unrelated.

Verification

• grep -rn queue.py . (excluding .git/worktrees) → 0 matches after deletion
• No import queue / from queue references anywhere
• uv sync --group dev in fastapi_startkit/ → exit 0, resolves cleanly

[tmgbedu]

✅ Code review verdict: APPROVE (posting as comment — GitHub blocks self-approval on own PR).

Single-file deletion of repo-root queue.py (346 deletions, 0 additions). All four review checks pass:

1. Scope — PR branch diff (main...origin/task/remove-queue-poc) is exactly 1 file: queue.py. Copies under .claude/worktrees / .venv are not in the diff — untouched. ✅
2. No references / importers — grep -rn queue.py (excl .git/worktrees) → only remaining hit is the self-referential comment inside the deleted file (# Demo (python queue.py)), which goes away with it. No import queue / from queue import anywhere resolves to this module. ✅
3. Docs unaffected — the only docs mentions are # config/queue.py in queues.md, a config-file example unrelated to this root POC. ✅
4. Clean sync — queue.py is not referenced as a script/entry-point in any pyproject.toml; no lock or other files in the diff. uv sync unaffected. ✅

Bonus: a root-level queue.py shadows the stdlib queue module when running python from the repo root — removing it eliminates that latent hazard.

Clean removal. LGTM.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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