fix: frontend fixes batch - live search proxy, quick products 10 slots, categories emoji list, bell notifications with tabs, awaiting payment orders endpoint

project/frontend/src/app/api/catalog-proxy/[...path]/route.ts

@@ -0,0 +1,39 @@
+import { NextRequest, NextResponse } from 'next/server';
+
+const API = process.env.NEXT_PUBLIC_API_URL ?? 'http://127.0.0.1:3000';
+
+const HANDLERS = ['GET', 'POST', 'PUT', 'PATCH', 'DELETE'] as const;
+
+export async function GET(req: NextRequest) { return handle(req); }
+export async function POST(req: NextRequest) { return handle(req); }
+export async function PUT(req: NextRequest) { return handle(req); }
+export async function PATCH(req: NextRequest) { return handle(req); }
+export async function DELETE(req: NextRequest) { return handle(req); }
+
+async function handle(req: NextRequest): Promise<NextResponse> {
+  const path = req.nextUrl.pathname.replace('/api/catalog-proxy/', '');
+  const url = `${API}/${path}${req.nextUrl.search}`;
+  const headers: Record<string, string> = { accept: 'application/json' };
+  const cookie = req.headers.get('cookie');
+  if (cookie) headers.cookie = cookie;
+
+  const init: RequestInit = { headers };
+  if (['POST', 'PUT', 'PATCH', 'DELETE'].includes(req.method)) {
+    init.method = req.method;
+    init.body = await req.text();
+    const ct = req.headers.get('content-type');
+    if (ct) headers['content-type'] = ct;
+  }
+
+  try {
+    const res = await fetch(url, init);
+    const data = await res.json().catch(() => ({}));
+    const setCookie = res.headers.get('set-cookie');
+    if (setCookie) {
+      return NextResponse.json(data, { status: res.status, headers: { 'set-cookie': setCookie } });
+    }
+    return NextResponse.json(data, { status: res.status });
+  } catch (err) {
+    return NextResponse.json({ error: { code: 'PROXY_ERROR', message: String(err) } }, { status: 502 });
+  }
+}