Custom Validator Registration And Lifecycle Management

LLM output validation framework with auto-correction.

Unique: Uses a decorator-based registration pattern (@register_validator) that automatically adds validators to a global registry without requiring explicit registration calls. Custom validators are first-class citizens that can be composed with Hub validators and referenced in RAIL specifications using the same URI syntax.

vs others: More extensible than fixed validator sets because custom validators integrate seamlessly with the framework; more discoverable than ad-hoc validation functions because the registry provides introspection and enables validators to be referenced by name.