Add MissionExecutionLoop mock to @fusion/engine vi.mock block in
serve.test.ts. The mock provides start, stop, processTaskOutcome,
and recoverActiveMissions methods to match the actual class interface.
Also adds the scrutiny synthesis report for milestone execution-loop
which identifies 3 blocking issues in FEAT-004:
- parseValidationResult stub always returns pass
- notifyValidationComplete passes featureId instead of taskId
- recoverActiveMissions doesn't perform state transitions
Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>
