feat: dcy-003/004 토큰 surface 개편 및 daemon lifecycle 정책 구현 (BAT-006/007)

BAT-006 (REQ-016/017/018):
- client token 발급 경로 제거 (issue_client_token, POST /auth/tokens, 관련 스키마/테스트)
- service-token rotate unique index revoked_at IS NULL 조건 추가 (Alembic CONCURRENTLY 마이그레이션)
- POST /auth/service-tokens body daemon_id forward 누락 보정 (1-line fix)

BAT-007 (REQ-022/023):
- daemon deactivate 시 바인딩 service token 자동 revoke (CLI --force 옵션 + revoke_tokens_by_daemon_id)
- NULL daemon_id legacy token 진단 CLI (migrate-null-daemon --dry-run)

거버넌스 문서: dcy-003/004 Discovery, REQ-016~023/025~032 신규, BAT-006/007 전체 산출물

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docs/batches/bat-006_20260520_token-surface-code-fixes/implementation.md

@@ -0,0 +1,39 @@
+# BAT-006 Implementation
+
+- Status: completed
+- Batch: BAT-006
+
+## Plan Summary
+- REQ-017: rotate unique index 보강 Alembic migration + ensure_schema 갱신
+- REQ-018: POST /auth/service-tokens daemon_id forward 1-line fix
+- REQ-016: POST /auth/tokens 라우트·서비스·스키마 코드 제거
+
+## Changed Files
+- `migrations/versions/20260520_0022_service_token_unique_index_fix.py` — 신규 Alembic revision: DROP + CREATE UNIQUE INDEX CONCURRENTLY `WHERE token_type='service' AND revoked_at IS NULL` (REQ-017)
+- `app/repositories/postgres.py` — `ensure_schema()` idx 정의 조건 갱신 `WHERE token_type='service' AND revoked_at IS NULL` (REQ-017)
+- `app/api/auth_routes.py` — `daemon_id=payload.daemon_id` 추가 (REQ-018); `CreateClientTokenRequest`·`IssuedClientTokenResponse`·`IssuedClientToken` import 제거, `_to_issued_token_response` 헬퍼 제거, `create_token` 라우트 제거 (REQ-016)
+- `app/services/auth_service.py` — `CreateClientTokenRequest` import 제거, `IssuedClientToken` dataclass 제거, `issue_client_token` 메서드 제거, `_build_expiration` 정적 메서드 제거 (REQ-016)
+- `app/schemas/auth.py` — `CreateClientTokenRequest`, `IssuedClientTokenResponse` 클래스 제거 (REQ-016)
+- `tests/test_auth.py` — `get_daemon_by_id` 추가 to `_AuthRepo`; REQ-018 AC-1~3 서비스 계층 테스트 3개 추가; REQ-016 AC-2 HTTP 404/405 테스트 추가
+- `tests/test_auth_surface_after_client_deprecation.py` — 신규: REQ-016 AC-1 grep 기반 잔여 심볼 검증 3개, AC-4 importlib 기반 심볼 제거 검증 2개
+- `tests/test_users.py` — `test_login_and_issue_client_token_flow` 제거 (POST /auth/tokens 폐지)
+
+## Execution Log
+1. REQ-017: `migrations/versions/20260520_0022_service_token_unique_index_fix.py` 신규 작성 (CONCURRENTLY + autocommit 패턴)
+2. REQ-017: `app/repositories/postgres.py:ensure_schema()` index 조건 갱신
+3. REQ-018: `app/api/auth_routes.py` `issue_service_token()` 호출에 `daemon_id=payload.daemon_id` 추가
+4. REQ-016: `app/schemas/auth.py` — `CreateClientTokenRequest`, `IssuedClientTokenResponse` 제거
+5. REQ-016: `app/services/auth_service.py` — `IssuedClientToken` dataclass, `issue_client_token`, `_build_expiration` 제거
+6. REQ-016: `app/api/auth_routes.py` — import, `_to_issued_token_response`, `create_token` 라우트 제거
+7. `tests/test_users.py` — `test_login_and_issue_client_token_flow` 제거
+8. `tests/test_auth.py` — `_AuthRepo.get_daemon_by_id` 추가; REQ-018 AC-1~3 테스트 추가; REQ-016 AC-2 HTTP 테스트 추가 (404/405 허용)
+9. `tests/test_auth_surface_after_client_deprecation.py` 신규 생성 (REQ-016 AC-1/4)
+10. pytest 255 passed 확인
+
+## Validation
+- pytest 255 passed (8.13s) — regression 없음
+- 신규 테스트: test_auth.py +4개, test_auth_surface_after_client_deprecation.py +5개 = 총 9개 추가
+
+## Remaining Risks
+- REQ-017 CONCURRENTLY migration: 실 DB(`docker-compose.local-test.yml`) 환경에서 AC-1~3 검증 미완료 (실 DB 없는 환경에서 단위 테스트만 수행)
+- REQ-016 AC-3: release 직전 `SELECT COUNT(*) FROM auth_tokens WHERE token_type='client' AND revoked_at IS NULL` → COUNT=0 재확인은 release plan evidence로 남김