feat: update Electron configuration and static server implementation

- Upgraded Electron version to 39.2.7 and TypeScript to 5.9.3 in package-lock.json.
- Modified next.config.ts to set output to "export" for static site generation.
- Changed package.json to include the output directory for deployment.
- Enhanced main.js to implement a static file server for production builds, serving files from the "out" directory.
- Adjusted the loading mechanism to use the static server in production and the Next.js dev server in development.

apps/app/package.json

@@ -100,7 +100,7 @@
     },
     "files": [
       "electron/**/*",
-      ".next/**/*",
+      "out/**/*",
       "public/**/*",
       "!node_modules/**/*"
     ],