加入类型转换逻辑，防止解码失败

db/task_db.py

@@ -178,7 +178,7 @@ class TaskDBOperator(BaseDBOperator):
             fields = []
             values = []
             for key, value in updates.items():
-                if key in ['groups', 'content_miniprogram', 'preview_recipients']:
+                if key in ['groups', 'content_miniprogram', 'preview_recipients','content_link']:
                     fields.append(f"{key} = %s")
                     values.append(value)
                 else: