fix windows extensions (#1968)

ui/desktop/scripts/prepare-platform.js

@@ -0,0 +1,16 @@
+const { execSync } = require('child_process');
+const path = require('path');
+
+try {
+    if (process.platform === 'win32') {
+        execSync(path.join(__dirname, 'prepare-windows-npm.bat'), { stdio: 'inherit' });
+    } else {
+        execSync(path.join(__dirname, 'prepare-windows-npm.sh'), { 
+            stdio: 'inherit',
+            shell: '/bin/bash'
+        });
+    }
+} catch (error) {
+    console.error('Error preparing platform:', error);
+    process.exit(1);
+}