Add user feedback status notifications

frontend/app/api/feedback/route.ts

@@ -2,6 +2,7 @@ import { NextRequest, NextResponse } from "next/server";
 import {
   applyAuthResponseCookies,
   buildBackendRequestHeaders,
+  requireBackendPaymentAuth,
 } from "@/lib/backend-auth";
 import {
   buildProxyExceptionResponse,
@@ -10,6 +11,55 @@ import {
 
 const API_BASE = process.env.POLYWEATHER_API_BASE_URL;
 
+export async function GET(req: NextRequest) {
+  if (!API_BASE) {
+    return NextResponse.json(
+      { error: "POLYWEATHER_API_BASE_URL is not configured" },
+      { status: 500 },
+    );
+  }
+
+  let auth: Awaited<ReturnType<typeof buildBackendRequestHeaders>> | null = null;
+  try {
+    auth = await buildBackendRequestHeaders(req);
+    const authError = requireBackendPaymentAuth(auth);
+    if (authError) return authError;
+
+    const upstream = new URL(`${API_BASE}/api/feedback`);
+    const limit = req.nextUrl.searchParams.get("limit");
+    if (limit) upstream.searchParams.set("limit", limit);
+
+    const res = await fetch(upstream, {
+      method: "GET",
+      headers: auth.headers,
+      cache: "no-store",
+    });
+    const raw = await res.text();
+    if (!res.ok) {
+      return applyAuthResponseCookies(
+        buildUpstreamErrorResponse(res.status, raw, {
+          detailLimit: 260,
+          error: "Feedback status request failed",
+        }),
+        auth.response,
+      );
+    }
+    const response = new NextResponse(raw, {
+      status: res.status,
+      headers: {
+        "Cache-Control": "no-store",
+        "Content-Type": res.headers.get("content-type") || "application/json",
+      },
+    });
+    return applyAuthResponseCookies(response, auth.response);
+  } catch (error) {
+    const response = buildProxyExceptionResponse(error, {
+      publicMessage: "Failed to fetch feedback status",
+    });
+    return auth ? applyAuthResponseCookies(response, auth.response) : response;
+  }
+}
+
 export async function POST(req: NextRequest) {
   if (!API_BASE) {
     return NextResponse.json(