fix: content quality, image format, task monitor, calendar data source, search UI & sort

platform/backend/app/api/publishing.py

@@ -2,7 +2,7 @@
 """发布管理 API"""
 from fastapi import APIRouter, HTTPException, Depends, Request
 from pydantic import BaseModel
-from datetime import datetime
+from datetime import datetime, timezone, timedelta
 from typing import Optional, List
 
 from ..database import get_db
@@ -86,8 +86,9 @@ async def create_publish_record(
                 ))
 
         topic.status = '已发布'
-        topic.updated_at = datetime.now()
-        topic.published_at = datetime.now().date()
+        _now = datetime.now(timezone(timedelta(hours=8)))
+        topic.updated_at = _now
+        topic.published_at = _now.date()
         db.commit()
         db.expire_all()
         db.refresh(topic)