feat: add TypeScript definitions for next-auth session with accessToken and user details

_archive/frontend/app/api/receipt-import-proxy/route.ts

@@ -0,0 +1,18 @@
+import { NextResponse } from 'next/server';
+import { withAuth } from '../../../lib/with-auth';
+
+const API_BASE =
+  process.env.NEXT_PUBLIC_API_URL_INTERNAL || 'http://recipe-api:8080';
+
+export const POST = withAuth(async (request, session) => {
+  const formData = await request.formData();
+
+  const res = await fetch(`${API_BASE}/api/receipt-import`, {
+    method: 'POST',
+    headers: { Authorization: `Bearer ${session.accessToken}` },
+    body: formData,
+  });
+
+  const text = await res.text();
+  return new NextResponse(text, { status: res.status, headers: { 'Content-Type': 'application/json' } });
+});