- Remove WebSocket-level chunking of VNC data (breaks streaming protocol)
- Send VNC data as complete WebSocket frames instead of chunks
- Enhance SSL error handling with better retry logic and exponential backoff
- Make VNC handler resilient to temporary SSL buffer issues
- Add comprehensive debug logging for WebSocket frame transmission
- Add client-side debug logging for VNC rectangle processing

Root cause: WebSocket chunking interrupted VNC TightDecoder which expects
complete compressed data blocks. Client accumulated partial data until
connection reset with ECONNRESET.