Implement structured error handling and logging

[jwalsh]

Senior Staff Engineer Review (Elara Kim)

The current implementation lacks robust error handling and logging that would be necessary in a production environment.

Core Issues

• Minimal error handling that won't scale
• No structured logging framework
• No clear API versioning strategy
• Tangle/detangle workflow needs standardization

Implementation Requirements

1. Structured Logging:

   • Implement a proper logging framework with severity levels
   • Ensure logs capture important metrics and errors
   • Add request/response logging with appropriate PII handling

2. API Versioning:

   • Define formal API contracts
   • Implement a versioning strategy in endpoints
   • Document upgrade paths for consumers

3. spaCy Model Version Management:

   • Establish clear upgrade paths for model versions
   • Add compatibility checks and validation

4. Development Workflow:

   • Standardize the tangle/detangle process
   • Create developer tooling to support the literate programming approach
   • Document the workflow clearly

Expected Outcome

A more robust system that can scale in production environments with proper error visibility, version control, and maintainability.