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

frontend/app/api/system/status/route.ts

@@ -1,13 +1,5 @@
 import { NextRequest, NextResponse } from "next/server";
-import {
-  applyAuthResponseCookies,
-  buildBackendRequestHeaders,
-} from "@/lib/backend-auth";
-import {
-  buildProxyExceptionResponse,
-  buildUpstreamErrorResponse,
-} from "@/lib/api-proxy";
-import { buildCachedJsonResponse } from "@/lib/http-cache";
+import { proxyBackendJsonGet } from "@/lib/api-proxy";
 
 const API_BASE = process.env.POLYWEATHER_API_BASE_URL;
 
@@ -19,32 +11,11 @@ export async function GET(req: NextRequest) {
     );
   }
 
-  try {
-    const auth = await buildBackendRequestHeaders(req, {
-      includeSupabaseIdentity: false,
-    });
-    const res = await fetch(`${API_BASE}/api/system/status`, {
-      headers: auth.headers,
-      next: { revalidate: 30 },
-    });
-    if (!res.ok) {
-      const raw = await res.text();
-      const response = buildUpstreamErrorResponse(res.status, raw, {
-        detailLimit: 500,
-      });
-      return applyAuthResponseCookies(response, auth.response);
-    }
-
-    const data = await res.json();
-    const response = buildCachedJsonResponse(
-      req,
-      data,
-      "public, max-age=0, s-maxage=30, stale-while-revalidate=120",
-    );
-    return applyAuthResponseCookies(response, auth.response);
-  } catch (error) {
-    return buildProxyExceptionResponse(error, {
-      publicMessage: "Failed to fetch system status",
-    });
-  }
+  return proxyBackendJsonGet(req, {
+    cacheControl: "public, max-age=0, s-maxage=30, stale-while-revalidate=120",
+    detailLimit: 500,
+    publicMessage: "Failed to fetch system status",
+    revalidateSeconds: 30,
+    url: `${API_BASE}/api/system/status`,
+  });
 }