Scores committed agent-run fixtures against the golden corpus at
(file, rule_key) granularity, building on the deterministic coordinator
contract (4a). Offline: committed reviewer payloads, no live agent spawn,
no LLM, no network (the LLM-in-the-loop grading is the separate 4c tier).
- lib/review/gold-scorer.mjs: scoreFindings (precision/recall/f1 at
(file,rule_key) granularity, line+severity ignored) + scoreVerdict; pure,
with documented vacuous-set conventions.
- tests/fixtures/bakeoff-rich/runs/run-perfect.json: committed run that
reproduces all 5 seeded gold findings through runContract.
- tests/lib/gold-eval.test.mjs: the scoring RUN (precision/recall/f1 = 1.0,
verdict == expected_verdict BLOCK, nothing suppressed/skipped).
- lib/util/test-census.mjs: third census category (goldEval) — a scoring run
is neither behavior coverage nor a doc-pin; honest-count invariant now 3-way.
- docs/eval-corpus/README.md: 4b moved from Future hardening to implemented.
Suite 809 -> 822 (820/0/2). gold-scorer covers TP+FP+FN+degenerate paths.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BJQYC5vpkJWxndS55vQQZ6
Run the full T2 §5 prose-vs-Workflow /trekreview bake-off (operator GO,
choice "a"): 3 runs/arm on a rich-finding JWT-auth fixture, resolving the
smoke's 0-finding limitation.
Deliverables:
- tests/fixtures/bakeoff-rich/ — JWT-auth brief + diff with 5 seeded blatant,
brief-traceable issues (varied severity/rule_key, one dual-flaggable).
- scripts/bakeoff-armA-merge.mjs — Arm A (prose) validate (NW1) + triplet-dedup,
matching Arm B's dedup exactly.
- scripts/bakeoff-fidelity.mjs — cross-arm + within-arm + granularity-ladder
fidelity analysis over the structured arm outputs.
- docs/T2-bakeoff-results.md §Full run — the T2 §5 verdict.
Result (3 runs/arm, both arms ran the coordinator):
- Verdict fidelity EQUIVALENT — all 6 runs BLOCK, cross-arm verdict-match 1.0.
- Finding-set: substrate is fidelity-neutral. Cross-arm jaccard 0.41 (triplet)
→ 0.71 (file,rule_key) → 1.0 (file); cross-arm ≈ within-arm at every
granularity. Issue coverage 5/5 in 6/6 runs. Low triplet jaccard is
line-citation noise shared by both arms, not a substrate effect.
- Token +4.4% (Arm B vs A; <=+15%). Classifier interference 0 at 9-agent
concurrency. JSON-robustness: Arm B schema-forced; Arm A 6/6 valid via NW1.
- VERDICT POSITIVE → S11 proceeds with opt-in --workflow flag.
Caveat (per plan posture): strict triplet-jaccard>=0.7 flag is 0/9, a
metric-calibration artifact (both arms sub-0.7 against themselves), not a
regression. Residual: F4 auto/bypass explicit-mode check (mode not settable
in-session).
Suite green (662/660 pass, 2 skip); plugin validate clean (modulo the
pre-existing root-CLAUDE.md warning). No production code changed.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LqBYc8Ltrk7LipyJmGxXiB
