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/next.config.ts

@@ -1,6 +1,7 @@
 import type { NextConfig } from "next";
 
 const nextConfig: NextConfig = {
+  output: "export",
   env: {
     CLAUDE_CODE_OAUTH_TOKEN: process.env.CLAUDE_CODE_OAUTH_TOKEN || "",
   },