Behavior-preserving extraction of the 1,942-line thread.tsx transcript
renderer into co-located sibling modules, matching the existing flat
assistant-ui/ convention:
- thread-content.ts / thread-timestamp.ts: pure helpers (+ unit tests)
- thread-types.ts: shared RestoreMessageTarget
- thread-status.tsx: loading / stall / background-resume indicators
- thread-message-parts.tsx: reasoning + tool part components
- assistant-message.tsx, system-message.tsx, user-message.tsx,
user-edit-composer.tsx: the message renderers
thread.tsx now holds only the Thread route component (1,942 -> 119 lines).
Also drops a dead readAloudAudio module variable (no references).
Brooklyn Nicholson
7ff6908a59