create-nuxt: adding @nuxt/ui during project creation fails with npm ERESOLVE (vue-router 5 vs @nuxt/ui peerOptional ^4.5.0)

[danieldilly]

Fresh repro on Windows.

Steps to reproduce:

1. Run npm create nuxt@latest .
2. During the interactive setup, choose to add the @nuxt/ui module
3. Let the CLI continue with npm

Expected behavior:
The default first-party Nuxt + Nuxt UI setup path should complete successfully.

Actual behavior:
The install fails with npm ERESOLVE.

Relevant error:

• nuxt@4.4.2 resolves vue-router@5.0.3
• @nuxt/ui@4.5.1 declares peerOptional vue-router@"^4.5.0"
• npm aborts dependency resolution

Excerpt:
Could not resolve dependency:
peerOptional vue-router@"^4.5.0" from @nuxt/ui@4.5.1

Environment:

• OS: Windows
• Package manager: npm
• Nuxt created with latest create-nuxt
• This occurred during the official interactive create flow when selecting Nuxt UI

Notes:
This is a frustrating failure because adding Nuxt UI from the official Nuxt create flow appears to be a default first-party setup path.