Orchestrate P1 evaluations and update progress (#3, #4, #5)

- sut-prober evaluation (pass)
- diff-reporter evaluation (pass with 1 partial follow-up)
- normalizer evaluations v1 (fail) + v2 (pass)
- PROGRESS.md Done rows for #3, #4, #5 + Follow-ups
- PLAN.md P0 reduced to hook verification

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

PROGRESS.md

@@ -26,10 +26,20 @@
 | 2026-04-07 | SUT 카탈로그 v0 (정적) | `docs/sut-catalog/catalog.md`, `plugins.md` |
 | 2026-04-07 | 솔루션 스캐폴드(sut-prober PoC 타깃) | `recordingtest.sln`, `src/Recordingtest.SutProber/` |
 | 2026-04-07 | sut-prober PoC 구현 (Generator) | `src/Recordingtest.SutProber/`, `docs/sut-catalog/{plugins,json-configs,assemblies}.json` |
+| 2026-04-07 | sut-prober PoC Evaluator pass (#3) | `docs/contracts/sut-prober.evaluation.md` |
+| 2026-04-07 | diff-reporter PoC + Evaluator pass (#5) | `src/Recordingtest.DiffReporter*/`, `docs/contracts/diff-reporter.evaluation.md` |
+| 2026-04-07 | normalizer PoC + Evaluator pass v2 (#4) — sidecar log, explicit coverage mapping, 6 rules | `src/Recordingtest.Normalizer/`, `docs/contracts/normalizer.evaluation.md` |
 
 ## In progress
 
-- sut-prober PoC — Evaluator 채점 대기 (Generator 측 빌드/실행/결정성 확인 완료)
+_(없음)_
+
+## Follow-ups
+
+- [ ] sut-prober JSON naming을 `JsonNamingPolicy.SnakeCaseLower`로 변경 (contract 엄격 준수). non-blocking.
+- [ ] diff-reporter: 실제 `diff-triager` 에이전트 통합 테스트 (현재 schema 단위 테스트로 대체, DoD #8 partial). non-blocking.
+- [ ] normalizer: `mask_volatile_settings` 규칙을 JSON-path 스코핑으로 제한 (현재는 필드명 전역 매칭). non-blocking risk.
+- [ ] normalizer: float epsilon 구성화 (현재 6 decimals 하드코딩). contract risks 섹션.
 
 ## Blocked