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

Side A replaces a fragile, over-engineered 1800-line keystroke autocomplete graph with a small, correct, well-tested paste-and-go parser (~90 lines), removing dead code, a stale test suite, and unused browser-test infra while adding focused unit tests and an integration test — a clear net simplification with real, verifiable behavior. Side B adds substantial new room/auth/cookie functionality but is messier (includes an unrelated AI-generated 'plan2.md' essay committed to the repo, large sprawling diffs across auth/forum/routing with no tests), making its lasting value harder to assess and its hygiene weaker despite more features.