error-handling.md

Error Handling

• Middleware returns structured errors under errors: [ { type, ... } ].
• Map them with result (see result-routing.md).
• Examples emitted:
  • pg: sqlError { message, sqlstate?, severity?, query }
  • fetch: networkError | timeoutError | httpError { status?, message, url }
  • auth: authError { message }
  • validate: validationError { field, message, rule? }