feat: migrate to Better Auth for authentication, update environment variables, and enhance database schema with accounts and sessions

Backend/index.ts

@@ -1,20 +1,20 @@
-import 'dotenv/config';
 import express from 'express';
+import { toNodeHandler } from 'better-auth/node';
 
-import authRoutes from './routes/auth';
+import { auth } from './auth';
 import videosRoutes from './routes/videos';
 import adminRoutes from './routes/admin';
 import { ensureMinioBucket } from './utils/minio';
 
 const app = express();
 
-app.use(express.json());
-
 app.get('/', (_req, res) => {
   res.send('API is running');
 });
 
-app.use('/auth', authRoutes);
+app.all('/api/auth/*splat', toNodeHandler(auth));
+
+app.use(express.json());
 app.use('/videos', videosRoutes);
 app.use('/admin', adminRoutes);