diff --git a/docs/LOGBOOK.md b/docs/LOGBOOK.md
index b2acb861..76619476 100644
--- a/docs/LOGBOOK.md
+++ b/docs/LOGBOOK.md
@@ -5,7 +5,29 @@
 
 ---
 
-## 📍 當前狀態 (2026-04-02 01:30 台北)
+## 📍 當前狀態 (2026-04-02 21:30 台北)
+
+| 項目 | 狀態 |
+|------|------|
+| **Phase 24 B2 觀察期** | ⏳ **進行中** — USE_AI_ROUTER=true，gemini 已驗證，48h 截止 2026-04-04 18:40 |
+| **Phase O-4 Wave A** | ✅ **完成** — Smoke Test 8/8 PASSED |
+| **CD pipeline** | ✅ 修復 (test AIProviderEnum + smoke test + Prometheus scrape) |
+| **Phase O-5 Wave B-C** | 🔲 待執行 (CD Smoke Test 整合 + 監控即代碼) |
+
+### Phase 24 B2 首次 Prod 驗證
+- `ai_router_execute_success` event 確認存在 Langfuse ✅
+- Provider: gemini, 信心度 0.88, tokens 2005, cost $0.000284 ✅
+- USE_AI_ROUTER=true 已設定到 ConfigMap ❌ (待下次 CD 寫入，現為 kubectl set env)
+
+### Phase O-4 Wave A 修復清單
+- `sentry_webhook.py` GET /health 新增
+- `webhooks.py` record_alert_chain_success() 實際呼叫
+- Prometheus scrape: awoooi-api 加入 (192.168.0.121:32334)
+- smoke_test: Prometheus URL 修正 (110:9090)
+
+---
+
+## 📍 歷史狀態 (2026-04-02 01:30 台北)
 
 | 項目 | 狀態 |
 |------|------|
diff --git a/k8s/awoooi-prod/04-configmap.yaml b/k8s/awoooi-prod/04-configmap.yaml
index 8a751ce3..c096ec22 100644
--- a/k8s/awoooi-prod/04-configmap.yaml
+++ b/k8s/awoooi-prod/04-configmap.yaml
@@ -48,9 +48,10 @@ data:
   # ============================================================================
   # Phase 24: AI Provider Registry (ADR-052)
   # 2026-04-02 ogt: 絞殺者開關 — false=舊路徑(安全), true=新 AIRouter
-  # 回滾: kubectl set env deployment/awoooi-api USE_AI_ROUTER=false
+  # 2026-04-02 ogt: B2 觀察期啟動，改為 true (48h, 截止 2026-04-04 18:40 台北)
+  # 回滾: kubectl set env deployment/awoooi-api -n awoooi-prod USE_AI_ROUTER=false
   # ============================================================================
-  USE_AI_ROUTER: "false"
+  USE_AI_ROUTER: "true"
 
   # ============================================================================
   # Phase 22: OpenClaw + Nemotron 協作 (ADR-044)