feat(ECR-013A): Admin RBAC 实现并 Closed

角色权限、RequirePermission、/me permissions 与 migration 000015；
Reviewer Approve → Closed。Next：ECR-013B Contract Definition。

Co-authored-by: Cursor <cursoragent@cursor.com>

docs/TASKS/TASK-013A-ECR013A.yaml

@@ -0,0 +1,17 @@
+id: TASK-013A-ECR013A
+ecr: ECR-013A
+title: Admin RBAC Closed
+role: reviewer
+status: closed
+change_level: L2
+parent: WAVE0-FROZEN
+inputs:
+  - docs/HANDOFF/ECR-013A-engineer-to-reviewer.md
+  - docs/TEST_REPORT/ECR-013A.md
+  - docs/CODE_REVIEW/ECR-013A.md
+outputs:
+  - CODE_REVIEW Approve → Closed
+acceptance:
+  - Spec AC-F/S/P/O mapped in TEST_REPORT
+  - No UserStatus / 013B
+  - boundary-rules Admin_RBAC respected