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

scripts/web_search.py

@@ -127,7 +127,15 @@ def save_to_cache(query: str, results: List[Dict]):
 
 
 def search(query: str, max_results: int = 5) -> List[Dict]:
-    """统一搜索接口：缓存 → API → 网页抓取"""
+    """统一搜索接口：DB提供商 → 缓存 → API → 网页抓取"""
+    try:
+        from search_utils import search as db_search
+        results = db_search(query, max_results)
+        if results:
+            return results
+    except Exception:
+        pass
+
     results = search_from_cache(query, max_results)
     if results:
         return results