Module action 

Action and ActionExecutor: single channel for tools and external world (governable).

Axiom: tool/LLM calls are system actions; results are recorded only as events (ActionSucceeded/ActionFailed).

Structs

ActionError

Structured error from action execution; used by Policy for retry decisions.

Enums

Action

System action: the only way the kernel interacts with the outside world.

ActionErrorKind

Classifies executor errors for policy (retry vs fail, backoff, rate-limit).

ActionResult

Result of executing an action (must be turned into events by the driver).

Traits

ActionExecutor

Executes an action. The driver records ActionRequested, then calls this, then records ActionSucceeded/ActionFailed. Return Err(KernelError::Executor(ActionError)) for structured retry decisions; other KernelError are treated as permanent.