feat（search.py）: 支持输入内容类型-视频/图文

agent/tools/builtin/search.py

@@ -58,7 +58,8 @@ class SuggestSearchChannel(str, Enum):
                 "keyword": "搜索关键词",
                 "channel": "搜索渠道",
                 "cursor": "分页游标",
-                "max_count": "返回条数"
+                "max_count": "返回条数",
+                "content_type": "内容类型-视频/图文"
             }
         },
         "en": {
@@ -67,7 +68,8 @@ class SuggestSearchChannel(str, Enum):
                 "keyword": "Search keyword",
                 "channel": "Search channel",
                 "cursor": "Pagination cursor",
-                "max_count": "Max results"
+                "max_count": "Max results",
+                "content_type": "content type-视频/图文"
             }
         }
     }