Refactor AIChatPanel to consume the existing useAIChat hook instead of
managing chat state inline. Removes duplicate ChatMessage interface,
inline state (messages, input, isStreaming, streamingContent), and the
65-line handleSend callback, replacing them with a single useAIChat()
call and a thin briefLoading guard wrapper.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Implemented useAIChat hook to handle chat messages, input state, and streaming responses.
- Added types for ChatMessage and ChatContext to ensure type safety.
- Integrated TRPC mutation for sending messages and handling responses.
- Included functionality for clearing messages and managing streaming content.
