docs(dcy-010): confirm-req-implemented — REQ-047 Implemented (BAT-021 PR#18 실DB검증), bat-021 release-candidate

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VHtM5Ws1HKCKQ4JGi6GRb5

docs/batches/bat-021_20260628_req047-step2-integration-and-runbook/index.md

@@ -1,7 +1,7 @@
 # BAT-021 Index
 
 - Profile: standard
-- Status: in-progress
+- Status: release-candidate
 - Included REQ: REQ-047
 - Discovery: dcy-010
 - Created: 2026-06-28
@@ -20,6 +20,11 @@ BAT-020(PR #17, d4acfd4)에서 Step1/Step2 마이그레이션 revision 코드가
 4. 운영 적용 런북 작성
 5. 신규/갱신 단위 테스트 추가
 
+## Notes
+
+- PR #18 머지(mergeCommit 7164f9e), 실 dev PG 통합검증 AC-1~7 PASS, QC(opus) PASS-WITH-NOTES(blocker 0). REQ-047 confirm-req-implemented 완료.
+- **Step2(PK 전환) 실 운영 DB 적용은 별도 release 결재 게이트 잔여.** 런북: `docs/runbooks/bat-021-req047-step2-migration-runbook.md`, 배포순서 Step1→backfill→Step2→코드배포 엄수, alembic stamp 사전확인.
+
 ## Documents
 
 - [planning.md](./planning.md)