feat(ECR-042): OpsCMS FeedSlot 薄写面

Admin POST/PUT 复用 admin.cms.write；C 端 GET /home/feed-slots；首页无 active 槽隐藏推荐区、失败回退展示；无新 migration。

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

docs/PROJECT_PROFILE.md

@@ -53,8 +53,8 @@
 - **本仓：** `ess_intake: strict` · Retro FAIL · 单 ECR Context  
 - **Ops foundation：** `docs/WAVE0/` · `.ai/domain/boundary-rules.md` · `glossary.yaml` · Loop: `docs/WAVE0/LOOP_AUTHORIZATION.md`  
 - ECR: main 线 ECR-006–016 Closed；Ops 扩展 ECR-013A/B · 017–040；分叉已固定为 `ECR-012-star` / `014-plan` / `015-code` / `016-insight`（见 TRACEABILITY）  
-- **Next ECR / Max Migration：** 以 `docs/TRACEABILITY.md` 顶部锚点为准 · 现 **Next=`ECR-042`** · **Max=`000051`**  
-- **Write-Wave：** `docs/WAVE0/WRITE_WAVE_AUTHORIZATION.md` · Active · **ECR-041 Banner Closed**；下一刀候选评估（非自动无限）  
+- **Next ECR / Max Migration：** **Next=`ECR-043`** · **Max=`000051`**  
+- **Write-Wave：** Active · ECR-041/042 Closed；下一刀须再评估边界  
 - EXP: （无）  
 - STATE: `docs/STATE/`（含 ECR-041）  
 - TRACEABILITY: `docs/TRACEABILITY.md` · 门禁 `scripts/repo-governance-check.py`