Fix included: Infinite redirect loop on unknown paths for templates

Describe the Bug

For the other templates, I've seen issues like this being opened, so I assume each template using the same layout.tsx has this problem. -> tested ecommerce with mongo and d1 databases, however the same layout is used by other templates too.

Problem: Infinite redirect loops in production builds (npm run build), but works fine in dev mode.

Root layout renders statically by default in Next.js 15+, but child components (AdminBar, auth providers, Header) need access to runtime headers/cookies. This mismatch causes redirect loops.

Fix:

import { headers } from 'next/headers'

export default async function RootLayout({ children }) {
await headers() // Force dynamic rendering

Link to the code that reproduces this issue

pnpx create-payload-app@latest

Reproduction Steps

Use any template, build and start server (npm/pnpm run start)

Then go to any route that isn't defined, example: /asdasdasdasdasdadas

Which area(s) are affected?

area: templates

Environment Info

Binaries:
  Node: 20.19.1
  npm: 10.9.4
  Yarn: 1.22.22
  pnpm: 10.28.0
Relevant Packages:
  payload: 3.75.0
  next: 15.4.10
  @payloadcms/db-d1-sqlite: 3.75.0
  @payloadcms/db-mongodb: 3.75.0
  @payloadcms/drizzle: 3.75.0
  @payloadcms/email-resend: 3.75.0
  @payloadcms/graphql: 3.75.0
  @payloadcms/live-preview: 3.75.0
  @payloadcms/live-preview-react: 3.75.0
  @payloadcms/next/utilities: 3.75.0
  @payloadcms/plugin-cloud-storage: 3.75.0
  @payloadcms/plugin-form-builder: 3.75.0
  @payloadcms/plugin-seo: 3.75.0
  @payloadcms/richtext-lexical: 3.75.0
  @payloadcms/storage-r2: 3.75.0
  @payloadcms/storage-s3: 3.75.0
  @payloadcms/translations: 3.75.0
  @payloadcms/ui/shared: 3.75.0
  react: 19.2.1
  react-dom: 19.2.1
Operating System:
  Platform: linux
  Arch: x64
  Version: #1 SMP PREEMPT_DYNAMIC Thu, 30 Oct 2025 23:29:50 +0000
  Available memory (MB): 31513
  Available CPU cores: 18