🔧 fix: Fix rampant pings and rate limiting

- Skips idle connection checks in `getMCPManager` to avoid unnecessary pings.
- Introduces a skipOAuthTimeout flag during initial connection to prevent timeouts during server discovery.
- Uses a lightweight connection state check instead of ping to avoid rate limits.
- Prevents refetch spam and rate limit errors when checking connection status.
- Fixes an issue where the server connection was not being disconnected.

client/src/components/SidePanel/MCP/MCPPanel.tsx

@@ -59,6 +59,8 @@ export default function MCPPanel() {
       await Promise.all([
         queryClient.invalidateQueries([QueryKeys.tools]),
         queryClient.refetchQueries([QueryKeys.tools]),
+        queryClient.invalidateQueries([QueryKeys.mcpAuthValues]),
+        queryClient.refetchQueries([QueryKeys.mcpAuthValues]),
         queryClient.invalidateQueries([QueryKeys.mcpConnectionStatus]),
         queryClient.refetchQueries([QueryKeys.mcpConnectionStatus]),
       ]);

client/src/components/ui/MCP/MCPConfigDialog.tsx

@@ -45,13 +45,8 @@ export default function MCPConfigDialog({
 }: MCPConfigDialogProps) {
   const localize = useLocalize();
 
-  // Get connection status to determine OAuth requirements with aggressive refresh
-  const { data: statusQuery } = useMCPConnectionStatusQuery({
-    refetchOnMount: true,
-    refetchOnWindowFocus: true,
-    staleTime: 0,
-    cacheTime: 0,
-  });
+  // Get connection status to determine OAuth requirements
+  const { data: statusQuery } = useMCPConnectionStatusQuery();
   const mcpServerStatuses = statusQuery?.connectionStatus || {};
 
   // Derive real-time connection status and OAuth requirements

client/src/data-provider/Tools/queries.ts

@@ -51,9 +51,10 @@ export const useMCPConnectionStatusQuery = <TData = t.TMCPConnectionStatusRespon
     [QueryKeys.mcpConnectionStatus],
     () => dataService.getMCPConnectionStatus(),
     {
-      // refetchOnWindowFocus: false,
-      // refetchOnReconnect: false,
-      // refetchOnMount: true,
+      refetchOnWindowFocus: false, // Stop window focus spam
+      refetchOnReconnect: false, // Stop reconnect spam
+      refetchOnMount: false, // Only fetch when explicitly needed
+      staleTime: 2000, // 2 second cache to prevent excessive calls
       ...config,
     },
   );