# Backend Design: ECR-016 UserIntelligence

| ID | BD-2026-016 |
| Status | Approved |
| Coding | Loop authorized |
| Level | L2 |
| Migration | NO |

## Backend Change Boundary

```text
Domain: UserInsight read model (BehaviorSnapshot · PsychologicalTagSet derived)
App: AdminHandler → admin.Service → AdminRepo aggregates
API: GET /api/v1/admin/users/{id}/insight
Permission: admin.users.read
Migration: NO
UI: admin-h5 UserDetail「洞察」Tab
```

## Out of boundary

Write tags · new tables · Ask body edit · UGC · true payment

Rollback: remove route + UI tab（无 schema）