上传iOS的mcp工具过滤问题

local_plugins/chat_api/ios/chat_api/Sources/chat_api/MCPClient.swift

@@ -114,7 +114,7 @@ public class MCPSubClient {
     }
     
     private func processTools(_ toolList: [Tool]) {
-        tools = toolList
+        tools.removeAll()
         toolMaps.removeAll()
         
         for tool in toolList {
@@ -128,7 +128,7 @@ public class MCPSubClient {
                 "description": tool.description ?? "",
                 "parameters": parameters
             ]
-            
+            tools.append(tool)
             toolMaps.append([
                 "type": "function",
                 "function": functionMap