feat(api): Phase 13.1 #74 GitHub Webhook → OpenClaw 整合

- POST /api/v1/webhooks/github endpoint
- 處理 pull_request 和 push 事件
- 驗證 X-Hub-Signature-256
- Telegram 通知整合
- GitHubWebhookService 封裝 Redis 操作 (leWOOOgo 合規)

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

apps/api/src/services/github_webhook_service.py

@@ -0,0 +1,121 @@
+"""
+GitHub Webhook Service - Phase 13.1
+====================================
+封裝 GitHub Webhook 相關的 Redis 操作
+
+遵循 leWOOOgo 積木化原則:
+- Router 層不直接存取 Redis
+- 透過 Service 層封裝資料存取邏輯
+"""
+
+import json
+from typing import Protocol
+
+import structlog
+
+from src.core.redis_client import get_redis
+
+logger = structlog.get_logger(__name__)
+
+
+# Redis TTL: 7 天
+GITHUB_REVIEW_TTL_SECONDS = 7 * 24 * 60 * 60
+
+
+class IGitHubReviewRepository(Protocol):
+    """GitHub Review Repository Interface"""
+
+    async def save_review(self, review_id: str, review_data: dict) -> bool:
+        """儲存審查結果"""
+        ...
+
+    async def get_review(self, review_id: str) -> dict | None:
+        """取得審查結果"""
+        ...
+
+
+class GitHubReviewRedisRepository:
+    """Redis 實作的 GitHub Review Repository"""
+
+    KEY_PREFIX = "github_review:"
+
+    async def save_review(self, review_id: str, review_data: dict) -> bool:
+        """
+        儲存審查結果到 Redis
+
+        Args:
+            review_id: 審查 ID
+            review_data: 審查結果資料
+
+        Returns:
+            bool: 儲存是否成功
+        """
+        try:
+            redis_client = get_redis()
+            key = f"{self.KEY_PREFIX}{review_id}"
+            await redis_client.set(
+                key,
+                json.dumps(review_data, ensure_ascii=False),
+                ex=GITHUB_REVIEW_TTL_SECONDS,
+            )
+            logger.debug("github_review_saved", review_id=review_id)
+            return True
+        except Exception as e:
+            logger.error("github_review_save_failed", review_id=review_id, error=str(e))
+            return False
+
+    async def get_review(self, review_id: str) -> dict | None:
+        """
+        取得審查結果
+
+        Args:
+            review_id: 審查 ID
+
+        Returns:
+            審查結果資料，或 None
+        """
+        try:
+            redis_client = get_redis()
+            key = f"{self.KEY_PREFIX}{review_id}"
+            result = await redis_client.get(key)
+            if result:
+                return json.loads(result)
+            return None
+        except Exception as e:
+            logger.error("github_review_get_failed", review_id=review_id, error=str(e))
+            return None
+
+
+class GitHubWebhookService:
+    """
+    GitHub Webhook 服務
+
+    封裝審查結果的儲存與查詢
+    """
+
+    def __init__(self, repository: IGitHubReviewRepository | None = None):
+        self._repository = repository or GitHubReviewRedisRepository()
+
+    async def save_review_result(
+        self,
+        review_id: str,
+        review_data: dict,
+    ) -> bool:
+        """儲存審查結果"""
+        return await self._repository.save_review(review_id, review_data)
+
+    async def get_review_result(self, review_id: str) -> dict | None:
+        """取得審查結果"""
+        return await self._repository.get_review(review_id)
+
+
+# 單例
+_service: GitHubWebhookService | None = None
+
+
+def get_github_webhook_service() -> GitHubWebhookService:
+    """取得 GitHubWebhookService 單例"""
+    global _service
+    if _service is None:
+        _service = GitHubWebhookService()
+    return _service