Module error 

Runtime layer error definition

Error handling follows microservices patterns rather than classic Actor supervision:

• Application errors: Propagated as RPC responses (handled by caller)
• Framework errors: Classified as Transient/Permanent/Poison

See docs/3.11-production-readiness.zh.md for complete error handling strategy.

Enums

ErrorClassification

Error classification for retry decision

RuntimeError

Runtime error types following gRPC-style classification

Type Aliases

RuntimeResult

Runtime result type