Investigation findings:
- Added debug logging to appendAssistantMessage to trace state transitions
- Reproduced bug with Playwright MCP on running Claude agent
- Client-side state management works correctly
- Root cause: Server sends incomplete text chunks to client
The app-side code is NOT causing the garbled text. The issue is
server-side in the Claude agent streaming implementation.
See REPORT-garbled-text-bug.md for full analysis.
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
