refactor: unify agent data port access

app/agent/tools/impl/query_sites.py

@@ -7,7 +7,7 @@ from pydantic import BaseModel, Field
 
 from app.agent.tools.base import MoviePilotTool
 from app.agent.tools.tags import ToolTag
-from app.application.agentdata import SitePort as SiteOper
+from app.application.agentdata import get_agent_site_port
 from app.runtime.log import logger
 
 
@@ -58,7 +58,7 @@ class QuerySitesTool(MoviePilotTool):
         logger.info(f"执行工具: {self.name}, 参数: status={status}, name={name}")
         try:
             is_admin = await self.is_admin_user()
-            site_oper = SiteOper()
+            site_oper = get_agent_site_port()
             # 获取所有站点（按优先级排序）
             sites = await site_oper.async_list()
             filtered_sites = []