fix windows native uvx (#1775)

ui/desktop/scripts/build-main.js

@@ -0,0 +1,48 @@
+const { build } = require('vite');
+const { resolve } = require('path');
+const fs = require('fs');
+
+async function buildMain() {
+  try {
+    const outDir = resolve(__dirname, '../.vite/build');
+    
+    // Ensure output directory exists
+    if (!fs.existsSync(outDir)) {
+      fs.mkdirSync(outDir, { recursive: true });
+    }
+
+    await build({
+      configFile: resolve(__dirname, '../vite.main.config.ts'),
+      build: {
+        outDir,
+        emptyOutDir: false,
+        ssr: true,
+        rollupOptions: {
+          input: resolve(__dirname, '../src/main.ts'),
+          output: {
+            format: 'cjs',
+            entryFileNames: 'main.js'
+          },
+          external: [
+            'electron',
+            'electron-squirrel-startup',
+            'path',
+            'fs',
+            'url',
+            'child_process',
+            'crypto',
+            'os',
+            'util'
+          ]
+        }
+      }
+    });
+
+    console.log('Main process build complete');
+  } catch (e) {
+    console.error('Error building main process:', e);
+    process.exit(1);
+  }
+}
+
+buildMain();