docs(batch): record PR #21 QC pass and lead confirmation

docs/batches/bat-025_20260715_portfolio-ledger-alembic-migration/index.md

@@ -2,7 +2,7 @@
 
 - Batch ID: BAT-025
 - Profile: standard
-- Status: verification-reopened (PR #21 provenance remediation and independent re-QC pending)
+- Status: release-candidate (PR #21 independent QC PASS; lead confirmation recorded)
 - Discovery: dcy-012_20260714_manual-ledger-write-api-owner-scoped (REQ-057 follow-on)
 - Included REQ: REQ-057
 - Folder: docs/batches/bat-025_20260715_portfolio-ledger-alembic-migration/
@@ -33,8 +33,8 @@ REQ-056/BAT-024가 사용한 `portfolio_ledger` additive metadata 네 컬럼을
 
 - [x] confirmed planning/design 문서 local main commit (`600375b`)
 - [x] dev-impl의 migration/code/test/runbook commit (`f6195ff`, remediation `779d6f7`)
-- [ ] PR #21 committed-diff independent QC PASS (provenance mapping and loopback DSN reproduction pending fresh verdict)
-- [ ] lead verification confirmation re-recorded after PR #21 QC PASS
+- [x] PR #21 committed-diff independent QC PASS (`deleg_ae0c6f27`; patch-id mapping, loopback PostgreSQL, Ruff, hygiene)
+- [x] lead verification confirmation re-recorded after PR #21 QC PASS (2026-07-15)
 - [x] M5 Release 미착수 — 별도 release approval 전 운영 migration/deploy/service activation 금지
 
 ## Gate / Constraints