feat: add local server configuration warning in CloudSyncDialog

- Displayed a message in the CloudSyncDialog when no local server configurations are found, prompting users to add at least one server before uploading to the cloud.

Author: milisp

tauri-app/src/components/manage/team/CloudSyncDialog.tsx

@@ -144,6 +144,11 @@ export function TeamCloudSyncDialog({
           </div>
 
           <div className="grid grid-cols-2 gap-3">
+            {localServersCount === 0 && (
+              <div className="text-sm text-destructive font-semibold col-span-2 text-center">
+                No local server configurations found. Please add at least one server before uploading to cloud.
+              </div>
+            )}
             <Button
               variant="outline"
               onClick={handleCloudUpload}