feat: implement dashboard state management, API proxy layer, and modular UI components for weather monitoring and payments

frontend/app/api/payments/runtime/route.ts

@@ -1,12 +1,5 @@
 import { NextRequest, NextResponse } from "next/server";
-import {
-  applyAuthResponseCookies,
-  buildBackendRequestHeaders,
-} from "@/lib/backend-auth";
-import {
-  buildProxyExceptionResponse,
-  buildUpstreamErrorResponse,
-} from "@/lib/api-proxy";
+import { proxyBackendJsonGet } from "@/lib/api-proxy";
 
 const API_BASE = process.env.POLYWEATHER_API_BASE_URL;
 
@@ -18,28 +11,13 @@ export async function GET(req: NextRequest) {
     );
   }
 
-  try {
-    const auth = await buildBackendRequestHeaders(req);
-    const res = await fetch(`${API_BASE}/api/payments/runtime`, {
-      headers: auth.headers,
-      cache: "no-store",
-    });
-    if (!res.ok) {
-      const raw = await res.text();
-      const response = buildUpstreamErrorResponse(res.status, raw, {
-        detailLimit: 500,
-      });
-      return applyAuthResponseCookies(response, auth.response);
-    }
-
-    const data = await res.json();
-    const response = NextResponse.json(data, {
-      headers: { "Cache-Control": "no-store" },
-    });
-    return applyAuthResponseCookies(response, auth.response);
-  } catch (error) {
-    return buildProxyExceptionResponse(error, {
-      publicMessage: "Failed to fetch payment runtime",
-    });
-  }
+  return proxyBackendJsonGet(req, {
+    cacheControl: "no-store",
+    conditionalResponse: false,
+    detailLimit: 500,
+    fetchCache: "no-store",
+    includeSupabaseIdentity: true,
+    publicMessage: "Failed to fetch payment runtime",
+    url: `${API_BASE}/api/payments/runtime`,
+  });
 }