refactor: migrate authentication system and update Drizzle schema.

next.config.js

@@ -6,9 +6,6 @@ import "./src/env.js";
 
 /** @type {import("next").NextConfig} */
 const config = {
-  eslint: {
-    ignoreDuringBuilds: true,
-  },
 };
 
 export default config;