chore: voltar para Next 15.5.5 e React 18

next.config.ts

@@ -1,9 +1,14 @@
 import type { NextConfig } from "next"
+import { ALLOWED_HOSTS } from "./src/config/allowed-hosts"
 
 const nextConfig = {
   experimental: {
     turbopackFileSystemCacheForDev: true,
-    trustHostHeader: true,
+  },
+  // No Next 16 specific trustHostHeader flag; we whitelist via classic server.allowedHosts.
+  // @ts-expect-error server.allowedHosts disponível na linha 15.x
+  server: {
+    allowedHosts: [...ALLOWED_HOSTS],
   },
 } satisfies NextConfig