Fixes identified in AI review:
- Blocker #1: Server now handles chat_request WebSocket frames and invokes Claude
- Blocker #2: accept_connection() uses self.headers from BaseHTTPRequestHandler
- Blocker #3: handle_websocket_upgrade() uses asyncio.open_connection() for proper StreamWriter
- Medium #4: _decode_frame() uses readexactly() for all fixed-length reads
- Medium #5: Message queue cleaned up on disconnect in handle_connection() finally block
- Low #6: WebSocket close code corrected from 768 to 1000
- Low #7: _send_close() and _send_pong() are now async with proper await
Changes:
- Added _handle_chat_request() method to invoke Claude within WebSocket coroutine
- Fixed _send_close() to use struct.pack for correct close code (1000)
- Made _send_pong() async with proper await
- Updated handle_connection() to call async close/pong methods and cleanup queue
- Fixed handle_websocket_upgrade() to pass Sec-WebSocket-Key from HTTP headers
- Replaced create_connection() with open_connection() for proper reader/writer