fix double opening window

nym-wallet/src-tauri/src/operations/app/link.rs

@@ -4,8 +4,21 @@ use tauri_plugin_opener::OpenerExt;
 pub async fn open_url(url: String, app_handle: tauri::AppHandle) -> Result<(), String> {
     println!("Opening URL: {}", url);
 
-    match app_handle.opener().open_url(&url, None::<&str>) {
-        Ok(_) => Ok(()),
-        Err(err) => Err(format!("Failed to open URL: {}", err)),
+    #[cfg(target_os = "windows")]
+    {
+        // Windows needs shell capability
+        match app_handle.shell().open("", &url) {
+            Ok(_) => Ok(()),
+            Err(err) => Err(format!("Failed to open URL: {}", err)),
+        }
+    }
+
+    #[cfg(not(target_os = "windows"))]
+    {
+        // macOS and Linux work well with opener
+        match app_handle.opener().open_url(&url, None::<&str>) {
+            Ok(_) => Ok(()),
+            Err(err) => Err(format!("Failed to open URL: {}", err)),
+        }
     }
 }