[engine-failure] PROJ-887-llmxive-follow-up-extending-latentskill @ tasks: RuntimeError

Automated report (spec 023 / FR-016) — an unexpected engine failure occurred while processing **PROJ-887-llmxive-follow-up-extending-latentskill** 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-887-llmxive-follow-up-extending-latentskill/specs/001-llmxive-follow-up-extending-latentskill/tasks.md\n'
```

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 with the reported stage and artifact at projects/PROJ-887-llmxive-follow-up-extending-latentskill/specs/001-llmxive-follow-up-extending-latentskill/tasks.md, then trace the LLMReviewer[ordering] entry point and its review-frontmatter validation. Reproduce the truncated or contentless review described in spec 023 / FR-016. Done means the underlying defect is fixed and the normal retry recovers without treating the review as acceptance.

Written by the indexing model from the issue text.