refactor: integrate Better-Auth for authentication and remove Supabase dependencies

apps/backend/src/middlewares/require-auth.middleware.ts

@@ -1,27 +1,18 @@
-import { createMiddleware } from "hono/factory";
-import { auth } from "@/lib/auth";
-import type { Session, User } from "@/lib/auth";
+import { auth } from '@/lib/auth';
+import type { AppEnv } from '@/types/hono';
+import { createMiddleware } from 'hono/factory';
 
-export type AuthEnv = {
-  Variables: {
-    user: User;
-    session: Session;
-  };
-};
-
-export const requireAuth = createMiddleware<AuthEnv>(async (c, next) => {
+export const requireAuth = createMiddleware<AppEnv>(async (c, next) => {
   const session = await auth.api.getSession({
     headers: c.req.raw.headers,
   });
 
-  console.log(session)
-
   if (!session) {
-    return c.json({ message: "Unauthorized" }, 401);
+    return c.json({ message: 'Unauthorized' }, 401);
   }
 
-  c.set("user", session.user);
-  c.set("session", session.session);
+  c.set('user', session.user);
+  c.set('session', session.session);
 
   await next();
 });

apps/backend/src/middlewares/require-super-admin.middleware.ts

@@ -11,9 +11,9 @@ function getSuperAdminEmails(): Set<string> {
 }
 
 export const requireSuperAdmin: MiddlewareHandler<AppEnv> = async (c, next) => {
-  const authUser = c.get('authUser');
-  const role = typeof authUser.app_metadata?.role === 'string' ? authUser.app_metadata.role : null;
-  const email = authUser.email?.toLowerCase();
+  const user = c.get('user');
+  const role = (user as any).role || 'member';
+  const email = user.email.toLowerCase();
 
   if (role === 'super_admin') {
     await next();