gsxdsm b4a2e7a486 feat(chat): unify QuickChat backend path and consolidate render toggle ...

Backend
- chat.ts now routes both regular chat and QuickChat through
  createResolvedAgentSession instead of branching to createFnAgent for
  the no-runtime-hint case. This removes the divergent path where
  pi-ai's cleanupSessionResources(sessionId) could tear down resources
  the next generation depends on.
- sendMessage's finally only disposes the agent if it still owns the
  activeGenerations slot. A newer generation that has pre-empted us
  cleans up its own agent in its own finally — disposing here would
  yank the underlying CLI process out from under it.
- __setCreateFnAgent test helper now mirrors its mock into the
  createResolvedAgentSession slot so existing test setups still work
  after the unification.

Frontend
- Extract createChatStreamHandlers (RAF coalescing, accumulators,
  tool-call dedup, fallback handling) — useChat and useQuickChat were
  duplicating ~85 LOC each. Both now compose the shared factory.
- Move shared chat types into chatTypes.ts. The hooks re-export them
  for backward compatibility with existing consumers.
- Removed per-message Markdown/plain-text eye toggles. A single
  thread-level toggle in the chat header now flips every assistant
  bubble (including the streaming one) between rendered Markdown and
  plain text.
- Model-only chats hide the per-message agent identity row entirely;
  the model name is already in the thread header.

Tests
- Updated ChatView tests to reflect the new render-toggle contract
  (single header toggle drives all bubbles) and the model-only avatar
  suppression.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-05-05 11:04:48 -07:00

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