Allow for nested manifest files

[oswaldoacauan]

Currently the manifest file only works when placed at the root level of the app router.

Is there any reason to not allow nested manifests?

[SametDulger]

At this time, nested manifest files are not supported because:

They go against the browser spec.

Next.js handles manifest like any other global/static asset.

The recommended approach is to keep one manifest at /app/manifest.webmanifest or generate it dynamically via an API route if you need flexibility.