fix(config): улучшить обработку URL для бэкенда и увеличить таймаут запросов

next.config.ts

@@ -1,9 +1,5 @@
 import type { NextConfig } from "next";
-
-const backendInternalUrl = (process.env.BACKEND_INTERNAL_URL ?? "http://127.0.0.1:8000").replace(
-  /\/$/,
-  "",
-);
+import { backendInternalUrl } from "./lib/backend-internal-url";
 
 const nextConfig: NextConfig = {
   output: "standalone",
@@ -11,9 +7,10 @@ const nextConfig: NextConfig = {
     proxyClientMaxBodySize: "512mb",
   },
   async rewrites() {
+    const backendUrl = backendInternalUrl();
     return [
-      { source: "/health", destination: `${backendInternalUrl}/health` },
-      { source: "/api/:path*", destination: `${backendInternalUrl}/api/:path*` },
+      { source: "/health", destination: `${backendUrl}/health` },
+      { source: "/api/:path*", destination: `${backendUrl}/api/:path*` },
     ];
   },
 };