refactor(api): Phase 22 P0 leWOOOgo 模組化修復

Router 層禁止直接 httpx.AsyncClient，抽取到 Service 層:

新增 Services:
- OpenClawHttpService: Error 分析/Code Review/CI 診斷
- GitHubApiService: PR Diff 取得
- HealthCheckService: HTTP/PostgreSQL/Redis 健康檢查

修改 Routers:
- sentry_webhook.py: 使用 OpenClawHttpService
- github_webhook.py: 使用 GitHubApiService + OpenClawHttpService
- health.py: 使用 HealthCheckService

遵循規範:
- Skill 09: Router 層禁止直接外部 API 呼叫
- feedback_lewooogo_modular_enforcement.md

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

apps/api/src/api/v1/sentry_webhook.py

@@ -16,13 +16,11 @@ AWOOOI API - Sentry Webhook Handler
 
 import uuid
 
-import httpx
 import structlog
 from fastapi import APIRouter, BackgroundTasks, HTTPException, Request
 from pydantic import BaseModel
 
 from src.core.circuit_breaker import get_openclaw_guard
-from src.core.config import settings
 from src.core.metrics import (
     record_alert_chain_failure,
     record_alert_chain_success,
@@ -37,6 +35,7 @@ from src.models.approval import (
 )
 from src.services.anomaly_counter import get_anomaly_counter
 from src.services.approval_db import get_approval_service
+from src.services.openclaw_http_service import get_openclaw_http_service
 from src.services.sentry_service import get_sentry_service
 from src.services.telegram_gateway import get_telegram_gateway
 from src.utils.timezone import now_taipei_iso
@@ -287,6 +286,8 @@ async def call_openclaw_analyzer(error_context: dict) -> ErrorAnalysisResult | N
 
     優先使用 Ollama (本地，零成本)
     Fallback: Claude (高嚴重性)
+
+    Phase 22 P0 修復: 使用 OpenClawHttpService (2026-03-31)
     """
     guard = get_openclaw_guard()
 
@@ -301,28 +302,21 @@ async def call_openclaw_analyzer(error_context: dict) -> ErrorAnalysisResult | N
     # ADR-038 Layer 2: Concurrency Semaphore 排隊
     async with guard.semaphore:
         try:
-            async with httpx.AsyncClient(timeout=60.0) as client:
-                response = await client.post(
-                    f"{settings.OPENCLAW_URL}/api/v1/analyze/error",
-                    json={
-                        "error_context": error_context,
-                        "prefer_local": True,  # 優先 Ollama
-                    }
-                )
+            # Phase 22 P0: 使用 Service 層而非直接 httpx
+            service = get_openclaw_http_service()
+            data = await service.analyze_error(
+                error_context=error_context,
+                prefer_local=True,
+                timeout=60.0,
+            )
 
-                if response.status_code == 200:
-                    data = response.json()
-                    guard.record_success()
-                    return ErrorAnalysisResult(**data)
-                else:
-                    logger.warning(f"OpenClaw returned {response.status_code}")
-                    guard.record_failure()
-                    return None
+            if data:
+                guard.record_success()
+                return ErrorAnalysisResult(**data)
+            else:
+                guard.record_failure()
+                return None
 
-        except httpx.TimeoutException:
-            logger.warning("OpenClaw analysis timeout")
-            guard.record_failure()
-            return None
         except Exception as e:
             logger.exception(f"OpenClaw call failed: {e}")
             guard.record_failure()