- Implement streamChatMessage() using fetch ReadableStream for SSE parsing
- Update useChat hook with streaming state, abort support, and fallback to non-streaming
- Add streaming indicator (blinking cursor) in MessageList during token streaming
- Update ChatInput with Stop button during streaming, disable input while streaming
- Add CSS animations for streaming cursor
- Fix message ID uniqueness to prevent collisions in rapid sends
- Update tests for streaming path with makeStreamSucceed/makeStreamFail helpers
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
