- Detailed error classification system for tool errors, early termination, and provider errors
- Provider-specific error mappings for 11 LLM providers (OpenAI, Anthropic, OpenRouter, Chutes, NVIDIA, Together, Fireworks, Mistral, Groq, Google)
- Continue message system with 3-attempt limit before model switch
- 30-second wait for transient/rate limit errors before switching
- Distinguishes tool errors (return to user) from provider errors (switch model)
- Implementation plan with code examples for server.js and processor.ts
