[engine-failure] PROJ-196-the-role-of-temporal-discounting-in-proc @ tasks: RuntimeError

Automated report (spec 023 / FR-016) — an unexpected engine failure occurred while processing **PROJ-196-the-role-of-temporal-discounting-in-proc** 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: fleshed_out_complete\nartifact_path: projects/PROJ-196-the-role-of-temporal-discounting-in-proc/specs/001-the-role-of-temporal-discounting-'
```

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 engine failure at stage `tasks` and trace `LLMReviewer[ordering]` handling of the review frontmatter shown in the report. Reproduce the PROJ-196 retry path and inspect how a truncated or contentless review is classified; done means the underlying defect is fixed without allowing such a review to count as acceptance.

Written by the indexing model from the issue text.