~anthropic/claude-sonnet-latest → A (8:2)

Side A implements a substantial, working feature: a rate-limited, deduplicated background Reddit-fetch worker with OAuth handling, JSON parsing, URL mapping, tests, and wiring into AppState/routes—real lasting functionality. Side B is a small, correct bugfix that moves a zero-ratio guard earlier to avoid ghost items, valuable but minor in scope compared to A's feature work.