[engine-failure] PROJ-722-normalized-gaps-between-consecutive-squa @ plan: RuntimeError

Automated report (spec 023 / FR-016) — an unexpected engine failure occurred while processing **PROJ-722-normalized-gaps-between-consecutive-squa** at stage `plan`.

```
RuntimeError: LLMReviewer[methodology]: review frontmatter has neither `verdict:` nor `concerns:`/`action_items:` — a contentless/truncated review MUST NOT count as acceptance (false-convergence guard). First 200 chars: '```yaml\n---\nreviewer_name: rq_validity\nreviewer_kind: llm\nstage: planned\nartifact_path: projects/PROJ-722-normalized-gaps-between-consecutive-squa/specs/001-normalized-gaps-between-consecutive-squa/pl'
```

The project remains schedulable; it will retry on its normal cadence and recover once the underlying defect is fixed. Closing this issue does not require any project-state change.

Start by tracing the LLMReviewer methodology review handling at the plan stage, using the reported review frontmatter and the PROJ-722 spec path as entry points. Reproduce or inspect the failure and verify that a review lacking verdict, concerns, or action_items is rejected without counting as acceptance, while the project remains schedulable.

Written by the indexing model from the issue text.