# HANDOFF — ECR-007 Architect → Engineer

## Gate

**仅当** `docs/ECR/ECR-007-ops-analytics.md` Status = **Approved**，且 `BACKEND_DESIGN` Status = **Approved** 后，方可改 `apps/` / `packages/`。

当前：二者均为 **Approved**（2026-08-07 Human）→ Engineer 可改 `apps/`。

## Consume

1. `.ai/product/feature-spec/ops-analytics.md`  
2. `docs/ECR/ECR-007-ops-analytics.md`  
3. `docs/PRODUCT_SPEC/ECR-007-ops-analytics.md`  
4. `docs/BACKEND_DESIGN/ECR-007-ops-analytics.md`（**BD-2026-007**）  
5. `docs/ENGINEERING_SPEC/ECR-007-ops-analytics.md`  
6. `$ESS_ROOT/technology-governance/BACKEND_STANDARD.md`  
7. 本仓：`docs/PROJECT_RULES.md` · `.ai/architecture.md`

## Do

按 ENGINEERING_SPEC Implement order 落地 Ops-B。

## Do not

- 实现 Ops-C/D/E（另开 ECR）  
- Handler → DB  
- 采集 PII  
- 引入 Kafka/ClickHouse（需 L3 + ADR）  

## Return

1. `docs/HANDOFF/ECR-007-engineer-to-reviewer.md`  
2. `docs/TEST_REPORT/ECR-007.md`  
3. `docs/CODE_REVIEW/ECR-007.md`  
4. 更新 `docs/STATE/ECR-007.md` owner → reviewer  
5. `python scripts/ess-validate.py --phase review --ecr ECR-007`