# Acceptance: executor-gatekeeper-hook

## Implementation Result

Completed stage two of Executor Structured Output V2.

- Added `ExecutorGatekeeperService`.
- Added initial `schema.executor_v2` and `evidence.invocation_ref` rules.
- Added `gatekeeper_result` to Verifier payload.
- Stored `gatekeeper_result` in `VerifierContextHolder`.
- Persisted `gatekeeper_result` under `diagnosis_session.self_evaluation.verifier_evaluation`.
- Updated Verifier prompt so Gatekeeper fail must not produce PASS.
- Added focused tests for schema failure, valid pass, fabricated invocation ids, tool name mismatch, hook payload, and persistence.

## Static Verification

- `cmd /c openspec validate executor-gatekeeper-hook`
  - Result: passed.
  - Coverage: OpenSpec change validity.

## Script Verification

- `mvn "-Dtest=ExecutorGatekeeperServiceTest,VerifierInputHookTest,ChatServiceSequentialAgentTest" test`
  - Result: passed.
  - Coverage: 23 focused tests for Gatekeeper service, hook integration, and ChatService persistence.

## Browser / Manual Verification

Not run. This stage changes backend validation and audit behavior only.

## Unverified

- Full live application run with a real LLM.
- MySQL trace inspection after a real chat session.
- Excerpt similarity or phrase/utilization rules.

Reason: This phase intentionally covers deterministic schema and invocation-reference validation. Full live verification is better after Verifier V2 and Composer are implemented.

## Remaining Work

- Phase three: Verifier V2 `claim_checks`.
- Phase four: Composer final-answer generation.
- Phase five: eval fixtures and full audit closure.

## Archive Status

Devflow archive files created for stage two. OpenSpec archive is expected before moving to stage three.