feat: 添加中国节假日感知定时功能

- 新增 chinese_holidays 表，通过 timor.tech API 同步节假日数据
- 修正 holiday 字段解读：holiday=true → 休息日，holiday=false → 调休工作日
- 工作日 8:00-22:00 每小时爬取，周末/节假日/夜间自动跳过
- 新增 /api/v1/holidays/sync 和 /api/v1/holidays/today 接口
- 企微菜单新增「同步节假日」按钮，支持手动触发同步

app/wechat/handler.py

@@ -1,7 +1,11 @@
+import logging
 import xml.etree.ElementTree as ET
 
 from app.config import settings
 from app.wechat.crypto import WXBizMsgCrypt
+from app.wechat.client import WeChatClient
+
+logger = logging.getLogger(__name__)
 
 
 class WeChatMessageHandler:
@@ -11,6 +15,7 @@ class WeChatMessageHandler:
             sEncodingAESKey=settings.wechat_encoding_aes_key,
             sReceiveId=settings.wechat_corp_id,
         )
+        self.client = WeChatClient()
 
     def verify_url(
         self, msg_signature: str, timestamp: str, nonce: str, echostr: str
@@ -48,10 +53,86 @@ class WeChatMessageHandler:
             return encrypted
         return None
 
-    def handle_event(
+    async def handle_event(
         self, event: str, event_key: str | None, from_user: str
     ) -> str | None:
+        if event != "click" or not event_key:
+            return None
+
+        if event_key == "today_stats":
+            return await self._handle_today_stats(from_user)
+        elif event_key == "trigger_crawl":
+            return await self._handle_trigger_crawl(from_user)
+        elif event_key == "sync_holidays":
+            return await self._handle_sync_holidays(from_user)
         return None
 
-    def handle_text(self, content: str, from_user: str) -> str | None:
+    async def handle_text(self, content: str, from_user: str) -> str | None:
         return None
+
+    async def _handle_today_stats(self, from_user: str) -> str | None:
+        from app.api.deps import get_db
+
+        try:
+            async for db in get_db():
+                from sqlalchemy import func, select
+                from app.models.announcement import Announcement
+
+                total_result = await db.execute(
+                    select(func.count()).select_from(Announcement)
+                )
+                total = total_result.scalar() or 0
+
+                today_result = await db.execute(
+                    select(func.count()).where(
+                        func.date(Announcement.publish_date) == func.current_date()
+                    ).select_from(Announcement)
+                )
+                today = today_result.scalar() or 0
+
+                text = f"今日新增: {today} 条\n累计公告: {total} 条"
+                await self.client.send_text(text, from_user)
+        except Exception as e:
+            logger.error(f"查询统计失败: {e}")
+            await self.client.send_text("查询失败，请稍后再试", from_user)
+
+    async def _handle_trigger_crawl(self, from_user: str) -> str | None:
+        from app.api.deps import get_crawl_service
+
+        await self.client.send_text("开始爬取，请稍候...", from_user)
+
+        try:
+            service = get_crawl_service()
+            results = await service.run_all()
+            total = sum(r.total_count for r in results)
+            stored = sum(
+                r.pipeline_result.stored for r in results
+                if r.pipeline_result
+            )
+            notified = sum(
+                r.pipeline_result.notified for r in results
+                if r.pipeline_result
+            )
+            errors = [r.error_message for r in results if not r.success]
+            msg = f"爬取完成\n抓取: {total} 条\n新增: {stored} 条\n推送: {notified} 条"
+            if errors:
+                msg += f"\n异常: {errors[0][:50]}"
+            await self.client.send_text(msg, from_user)
+        except Exception as e:
+            logger.error(f"手动爬取失败: {e}")
+            await self.client.send_text(f"爬取失败: {e}", from_user)
+
+    async def _handle_sync_holidays(self, from_user: str) -> str | None:
+        from app.services.holiday_service import now_in_china, sync_holidays
+        from app.api.deps import get_db
+
+        try:
+            async for db in get_db():
+                year = now_in_china().year
+                count = await sync_holidays(db, year)
+                await self.client.send_text(
+                    f"已同步 {year} 年节假日\n共 {count} 条记录", from_user,
+                )
+        except Exception as e:
+            logger.error(f"同步节假日失败: {e}")
+            await self.client.send_text(f"同步失败: {e}", from_user)