woof. killed useClient and use nextjs api

app/api/auth/register/route.ts

@@ -0,0 +1,48 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { cookies } from 'next/headers';
+
+const API_BASE_URL = process.env.API_BASE_URL || process.env.NEXT_PUBLIC_API_BASE_URL;
+
+export async function POST(request: NextRequest) {
+  try {
+    const body = await request.json();
+
+    // Forward to backend API
+    const res = await fetch(`${API_BASE_URL}/api/auth/register`, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify(body),
+    });
+
+    if (!res.ok) {
+      const text = await res.text().catch(() => '');
+      return NextResponse.json(
+        { error: text || 'Registration failed' },
+        { status: res.status }
+      );
+    }
+
+    const data = await res.json();
+
+    // Set HTTP-only cookie on successful registration
+    if (data.token) {
+      cookies().set('session_token', data.token, {
+        httpOnly: true,
+        secure: process.env.NODE_ENV === 'production',
+        sameSite: 'lax',
+        maxAge: 60 * 60 * 24 * 7, // 7 days
+        path: '/',
+      });
+    }
+
+    // Return user data without token
+    return NextResponse.json({
+      user: data.user,
+    });
+  } catch (err: any) {
+    return NextResponse.json(
+      { error: err?.message || 'Registration failed' },
+      { status: 500 }
+    );
+  }
+}