feat(api): #7 Playbook 萃取功能 (Phase 7.1-7.4)

實作內容:
- models/playbook.py: Playbook 資料模型 + Request/Response
- repositories/playbook_repository.py: Redis 雙層儲存
- repositories/interfaces.py: IPlaybookRepository Protocol
- services/playbook_service.py: 業務邏輯 (萃取/推薦/核准)
- api/v1/playbooks.py: REST API 端點

API 端點:
- POST /playbooks/extract/{incident_id} - 從成功案例萃取
- POST /playbooks/recommend - 症狀匹配推薦
- POST /playbooks/{id}/approve - 人工核准
- GET/PATCH/DELETE /playbooks/{id} - CRUD

遵循 leWOOOgo 積木化: Router → Service → Repository

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/api/src/main.py

@@ -35,11 +35,15 @@ from src.api.v1 import ai as ai_v1
 from src.api.v1 import approvals as approvals_v1
 from src.api.v1 import audit_logs as audit_logs_v1
 from src.api.v1 import dashboard as dashboard_v1
+from src.api.v1 import (
+    github_webhook as github_webhook_v1,  # Phase 13.1: GitHub → OpenClaw
+)
 
 # Import API routers
 from src.api.v1 import health as health_v1
 from src.api.v1 import incidents as incidents_v1  # Phase 6.4: Decision Proposal
 from src.api.v1 import metrics as metrics_v1  # Phase 7: Gold Metrics (真實血脈)
+from src.api.v1 import playbooks as playbooks_v1  # #7: Playbook 萃取
 from src.api.v1 import proposals as proposals_v1  # Phase 6.4h: Proposals CRUD API
 from src.api.v1 import stats as stats_v1  # Phase 6.5: Statistics Analytics
 from src.api.v1 import telegram as telegram_v1  # Phase 5.4: Telegram Gateway
@@ -384,6 +388,12 @@ app.include_router(
 app.include_router(
     stats_v1.router, prefix="/api/v1", tags=["Statistics"]
 )  # Phase 6.5: Statistics Analytics
+app.include_router(
+    github_webhook_v1.router, prefix="/api/v1", tags=["GitHub Webhook"]
+)  # Phase 13.1: GitHub → OpenClaw
+app.include_router(
+    playbooks_v1.router, prefix="/api/v1", tags=["Playbooks"]
+)  # #7: Playbook 萃取
 app.include_router(
     proposals_router.router, tags=["Proposals (Legacy)"]
 )  # Phase 6.4g: lewooogo-brain (舊版)