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

B is a substantive refactor that splits a monolithic forum.rs into cohesive modules (nav, ingest, new_thread, room_members, access) plus adds a genuinely useful sampling script, improving maintainability at real scale. A is a small, useful but narrow config simplification (kaocha test discovery) that reduces boilerplate but touches only one file with modest lasting impact.