feat(REQ-012): implement service token rotation CLI

- Add service token rotation CLI command with force flag support
- Implement token rotation in auth service with expiration handling
- Add portfolio repository helper for transaction/batch operations
- Add cascade delete support in postgres repository
- Add comprehensive CLI tests for service token operations
- Add REQ-012 specification for service token rotation
- Create BAT-002 delivery batch for token rotation implementation
- Update SRS and batch indexes

docs/srs/index.md

@@ -74,7 +74,7 @@
 
 ## Next Requirement ID
 
-- Current: `REQ-012`
+- Current: `REQ-013`
 - Rule: `Requirement Register`에 있는 가장 큰 REQ 번호보다 정확히 1 커야 한다.
 
 ## Requirement Register
@@ -92,9 +92,11 @@
 | REQ-009 | v1 API 지원을 위한 DB 스키마 migration 추가 | Migration | Approved | High | repository-maintainers | [REQ-009](./Migration/req-009_v1-api-db-schema-migration.md) |
 | REQ-010 | credential_payload Fernet 암호화 및 startup validation | Non-Functional | Approved | High | repository-maintainers | [REQ-010](./Non-Functional/req-010_credential-payload-fernet-encryption.md) |
 | REQ-011 | trex-basic 계약 반영을 위한 baseline 문서 갱신 | Documentation | Approved | Medium | repository-maintainers | [REQ-011](./Documentation/req-011_baseline-docs-update-for-trex-basic-contract.md) |
+| REQ-012 | service-token rotate CLI 명령 구현 | Interface | Approved | Medium | repository-maintainers | [REQ-012](./Interface/req-012_service-token-rotate-cli.md) |
 
 ## Recent Change Log Summary
 
+- 2026-05-02: REQ-012 Approved 직행 (minor-change) — service-token rotate CLI 명령 구현
 - 2026-05-02: REQ-011 Approved 전환 — trex-basic 계약 반영을 위한 baseline 문서 갱신 (source Discovery: dcy-002)
 - 2026-05-02: REQ-010 Approved 전환 — credential_payload Fernet 암호화 및 startup validation (source Discovery: dcy-002)
 - 2026-05-02: REQ-009 Approved 전환 — v1 API DB 스키마 migration 추가 (source Discovery: dcy-002)