Request fix

- Auth.js handlers require NextRequest.
- The wrapper accepted plain Request.
Changed both GET and POST handlers to accept NextRequest.

src/app/api/auth/[...nextauth]/route.ts

@@ -1,3 +1,5 @@
+import { NextRequest } from "next/server";
+
 /**
  * Business Auth.js is intentionally unavailable in the standalone Manager
  * deployment. Keeping this check before the dynamic import prevents a stale
@@ -7,13 +9,13 @@ function managerAuthDisabled() {
   return process.env.MANAGER_MODE === "true";
 }
 
-export async function GET(request: Request) {
+export async function GET(request: NextRequest) {
   if (managerAuthDisabled()) return new Response(null, { status: 404 });
   const { handlers } = await import("@/auth");
   return handlers.GET(request);
 }
 
-export async function POST(request: Request) {
+export async function POST(request: NextRequest) {
   if (managerAuthDisabled()) return new Response(null, { status: 404 });
   const { handlers } = await import("@/auth");
   return handlers.POST(request);