Chat

The conversational surface: web chat with the whole box and everything that serves it. One page per member.

Members

Member	What it covers
Sessions	The backend session lifecycle: phases, queue and drain, park and evict, the shared SDK pump.
History	The transcript and the acceptance record, and how a replayed photo is served.
Check-ins	Agent-set timers that come back to one conversation (`bbx remind --here`): lifecycle, targeting, persistence.
Review	The nightly pass that writes a title, `contains`, and `contains-evidence` to each session's husk card.
Quick chat	Routing a captured thought to the right conversation, and the rubric that steers it.
Composer	The input bar: its coordination machine and a map of its rendered states.
Scroll	Verifying the message list's scroll behavior: the harness, the browser procedure, the trace.

Which engine and model a chat thinks with, fixed at the chat's birth: model policy.
The HTTP endpoints a client uses (send, upload, transcribe, default session): mobile contract.
The chat component's invariants for code changes (scroll model, streaming to finalize, the input store): src/frontend/src/components/chat/AGENTS.md.
Husk cards (_content/chat/web/*.chat.card) have no current reference; the design is the chat husks plan.