Introduce ActionValidationStatus enum (valid, unresolved, missing_argument,
invalid_argument, ambiguous_target) as the typed classification of validation
outcomes. ActionValidationResult now carries Status instead of boolean flags.
Backward-compatible: Unresolved() and Valid() methods preserved on the result.
Existing validation behavior unchanged: only blank Fn produces invalid_argument.
All downstream behavior (proposeGap, confirmation, task_status, praxis, hexis)
unchanged.
Tests added for all five status values, backward compatibility, and the full
validation → execution boundary.
Daemon half of the action-resolution boundary:
- Add resolveAction wrapper: delegates to ResolveActionCandidate,
records outcome in the decision trace (action-resolve:route/matcher)
- Refactor actionAct: remove matcher call, consume candidate, write
resolved values back into Slots for downstream branches
- Add 8 integration tests pinning all required scenarios:
route-sourced, matcher-sourced, matcher miss, destructive confirm,
task-status intercept, stage-0, learned-router, alias match
All existing tests pass. Execution/risk/confirmation unchanged.