next-roots or next-intl? Best way to go forward with next 15 app router

[padms]

As part of upgrading nextjs from 13 to the latest major 15, we would like to use app router instead of pages router.
As next 15 does not support i18n out of the box, we need to rely on other packages that does it for us with some configurations.

Feature / Goal	App Router	next-intl	next-roots
Modern Next.js architecture	✅	✅	⚠️ (Pages Router focus)
Server Components	✅	✅	❌
Internationalization	⚠️ (basic support)	✅ Best-in-class	❌
Centralized route definitions	❌	⚠️ (manual)	✅
Dynamic CMS-driven routing	✅ (with catch-all)	✅	❌
Type-safe internal links	❌	❌	✅
Nested layouts	✅	✅	❌

[padms]

next-intl supports formatting messages without making the component a client side one. We can remove react-intl which necessitates the component be a client side one