Covers [locale]-prefixed routing, localized navigation components (Link, redirect, usePathname, useRouter), date/number/currency/relative-time formatting, RTL language support, SEO hreflang tags, and localized special files ([locale]/error.tsx, [locale]/not-found.tsx, global-error.tsx). This is the Next.js-specific i18n skill (App Router routing, proxy.ts integration) — for plain React apps without Next.js see react-i18n, and for Astro see astro-i18n.

Next.js 16 Internationalization

Complete i18n solution with next-intl or DIY dictionary approach.

Agent Workflow (MANDATORY)

Before ANY implementation, use TeamCreate to spawn 3 agents:

1. fuse-ai-pilot:explore-codebase - Analyze existing i18n setup and message files
2. fuse-ai-pilot:research-expert - Verify latest next-intl docs via Context7/Exa
3. mcp__context7__query-docs - Check locale config and patterns

After implementation, run fuse-ai-pilot:sniper for validation.