Play Framework

docs(nuxt-skel): say Nuxt 4 where the bump made 'Nuxt 3' wrong

Three user-facing strings advertised the old major and became false the
moment nuxt moved to ^4.0.0: the scaffold's own landing copy, the sample
ApiController javadoc, and the README's --frontend note.

Verified by rebuilding the merged skel: pnpm install + nuxt generate green
on Nuxt 4.5.2, and the corrected string appears in the prerendered
index.html. tailwindcss deliberately stays on 3.4.19 — see the closed #17.

_bmad-output/project-context.md carries the same stale phrase but is a
generated artifact, so it is left for its generator to refresh.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>