[engine-failure] PROJ-860-llmxive-follow-up-extending-dragmesh-2-p @ tasks: RuntimeError

Automated report (spec 023 / FR-016) — an unexpected engine failure occurred while processing **PROJ-860-llmxive-follow-up-extending-dragmesh-2-p** at stage `tasks`.

```
RuntimeError: LLMReviewer[ordering]: 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: ordering\nreviewer_kind: llm\nstage: tasks\nartifact_path: projects/PROJ-860-llmxive-follow-up-extending-dragmesh-2-p/tasks.md\nartifact_hash: 7914f5b3a8d6e9c6998996669999999999'
```

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[ordering] handling of the review frontmatter for projects/PROJ-860-llmxive-follow-up-extending-dragmesh-2-p/tasks.md. Reproduce the contentless or truncated review case shown in the report and follow the retry path; done means that such a review cannot count as acceptance and the project remains schedulable.

Written by the indexing model from the issue text.