~x-ai/grok-latest → B (2:5)

B reshapes the primary agent CLI surface: replaces loose `ingest`/`forum <title>` with explicit `forum list|show|post`, tightens room-scoped `public`/`private` usage, requires `--delegate` on posts, and updates server next-move hints plus integration tests—lasting API/design clarity. A is a solid, tested UX polish (static pin glyph → real unpin form + CSS), but narrower in scope than B’s command-model change.