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

Side A implements a substantial new feature: a background Reddit worker with OAuth token handling, rate-limit/backoff logic, JSON parsing for subreddits/posts, and integration into the browse route and AppState, complete with unit tests. Side B is a real but narrower type-safety refactor (String -> CanonicalItemUrl, adding Deref impls) that reduces stringly-typed code and removes redundant parsing, which is valuable but lower-impact than shipping a working external-data integration.