📝 Improve error messages and logging

[Gilfeather]

Description

Enhance error messages to be more user-friendly and add structured logging throughout the application.

✅ Completed Items

• Add structured logging using tracing crate - DONE
• Replace generic error messages with specific, actionable ones - DONE
• Add proper error context using comprehensive error types - DONE
• Log request/response details at debug level - DONE
• Update error responses to include helpful suggestions - DONE

🔄 Remaining Items

• Include request IDs for tracing requests
• Add more granular log levels for different components

Current Implementation Status

Logging: Full structured logging implemented with:

• Session IDs for server instances
• Detailed request/response logging
• Performance metrics logging
• Error context with stack traces
• JSON logging support for production

Error Handling: Comprehensive error system with:

• Detailed error messages with context
• HTTP status code mapping
• Structured error responses with timestamps
• Input validation errors with expected vs actual values
• Helpful error suggestions in responses

Estimated Remaining Work

Easy - 1-2 hours for request ID tracing