~anthropic/claude-sonnet-latest → B (6:4)

Side B implements substantial new functionality: a real Reddit OAuth-enabled fetch worker with rate-limiting, backoff, caching, URL mapping, JSON parsing for subreddits/posts, and unit tests, replacing a placeholder stub—this is a foundational feature. Side A is a smaller, focused bugfix (correct child attachment under parent without ensure_path pollution, unranked label fix) plus test updates, which is valuable but narrower in scope and impact than the feature Side B introduces.