d97c66a53e
All 10 review criteria pass. No code changes required: implementation matches spec exactly. Added two deferred-work items for only requests.Timeout being caught (other fetch errors propagate without stale marking) and the growing _run_one_cycle signature (RendererState dataclass suggested for future). 103 tests pass, ruff clean. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>