# NW2 bake-off fixture (S10)

Fixed, committable input for the prose-vs-Workflow `/trekreview` bake-off
(T2 §5). Both arms review **the same delivered diff against the same brief**, so
any difference in `review.md` is attributable to the orchestration substrate
(prose Arm A vs Workflow Arm B), not to the input.

## What's here

- `brief.md` — the contract. Reconstructed faithfully from the **real** NW1
  contract (`docs/W1-narrow-wins-plan.md §S9`): goal, SC1–SC4, NG1–NG3,
  constraints, NFRs.
- `delivered.diff` — the **real** delivered diff of commit `b149538`
  (`git diff b149538^ b149538`): the NW1 implementation
  (`lib/review/findings-schema.mjs` + tests + `commands/trekreview.md` Phase 5).
  3 files, +438/-3.

## Why this commit

`b149538` (NW1/S9) is a genuine delivered-diff + brief pair already in this
repo's history — real code, real contract, fully self-contained (no external
deps), and small/cheap (ideal for the de-risking smoke run). It is not
finding-free (a strict correctness reviewer has surface to flag), so the
fidelity comparison is informative. A larger commit can be substituted for the
full ≥3-runs/arm measurement if more finding surface is wanted.

## Triage map (deterministic, pinned)

Per the Phase-4 path-pattern classifier, none of the 3 files match `skip` or
`deep-review` patterns → all `summary-only`:

```
commands/trekreview.md → summary-only
lib/review/findings-schema.mjs → summary-only
tests/lib/findings-schema.test.mjs → summary-only
```

## How it's consumed

The bake-off pins Phases 1–4 (brief + diff + triage above) and passes them to
both arms:

- **Arm A (prose):** current `/trekreview` Phase 5–6 behaviour.
- **Arm B (Workflow):** `scripts/trekreview-armB.workflow.mjs` via the Workflow
  tool, `args = { brief, diff, triage }`.

Each arm yields a structured `{verdict, findings}`; the PRIMARY metric is
`fidelityDiffStructured` (`lib/review/fidelity-diff.mjs`) — same verdict +
equivalent finding set (IDs / severities / rule_keys).
```