[Ubuntu 26.04][Agent&Skills] NemoHermes smoke reviewer journey exits without writing review.json

## Description

NemoHermes completed the reviewer journey command path but did not create the required review output file. The workflow then failed when downloading `/sandbox/work/hermes-review/review.json` from the sandbox because the file did not exist.

## Platform Scope

Reproduced on Ubuntu 26.04 GPU. A prior smoke run also showed the same missing `review.json` symptom on WSL2 x86; other platforms are not consistently reproduced for this exact symptom.

## Regression

Unknown — earlier versions were not tested for this exact smoke journey.

## Environment

- Product/version under test: NemoClaw v0.0.113
- Platform: Ubuntu 26.04 GPU
- Agent: NemoHermes
- Sandbox: `smoke-hermes-review`
- Cleanup status: preflight cleanup completed successfully before the smoke journey and reported the environment clean and ready.

## Steps To Reproduce

1. Run the NemoHermes reviewer smoke journey on Ubuntu 26.04 GPU with NemoClaw v0.0.113.
2. Onboard the NemoHermes smoke sandbox `smoke-hermes-review`.
3. Create `/sandbox/work/hermes-review` in the sandbox.
4. Upload `fixtures/user-journeys/hermes-review/checkout_retry.diff` and `fixtures/user-journeys/hermes-review/task.md` to `/sandbox/work/hermes-review/`.
5. Execute the Hermes task:

```bash
hermes -z "Read /sandbox/work/hermes-review/task.md and complete it exactly. Write exactly five findings, and do not combine findings. The five separate findings must cover: missing idempotency protection, transaction spanning the retry loop, charge call has no request timeout/deadline because it uses context.Background(), final payment error is swallowed by return nil after retries, and retry policy has no backoff or error filter."
```

6. Download `/sandbox/work/hermes-review/review.json` from the sandbox.

## Expected Result

- NemoHermes writes `/sandbox/work/hermes-review/review.json`.
- The file is non-empty valid JSON with `decision: "REQUEST_CHANGES"`.
- The deterministic verifier exits successfully and prints `PASS`.

## Actual Result

- The Hermes command path returned successfully enough for the workflow to continue to the download step.
- `/sandbox/work/hermes-review/review.json` was missing.
- Download failed with:

```text
Cannot download '/sandbox/work/hermes-review/review.json' from sandbox 'smoke-hermes-review': no such path in the sandbox.
```

## Why This Looks Like A Product Bug

- The fixture task explicitly instructs NemoHermes to write the review to `/sandbox/work/hermes-review/review.json`.
- The documented product expectation requires NemoHermes to write `review.json` with `REQUEST_CHANGES` and no inference or tool error.
- The smoke implementation follows that product-facing workflow and only fails after the expected artifact is absent.
- Cleanup completed successfully before the smoke journey, so the available evidence does not point to dirty runner state.

Start with the NemoHermes reviewer smoke journey and the fixtures at fixtures/user-journeys/hermes-review/checkout_retry.diff and task.md, using the hermes command from the reproduction steps on Ubuntu 26.04. Trace where the workflow should create and download review.json. Done means the file is non-empty valid JSON with decision "REQUEST_CHANGES" and the deterministic verifier prints PASS.

Written by the indexing model from the issue text.