astro-i18n

<objective> Implements Astro's built-in i18n system (Astro 3.5+): file-based locale routing under `src/pages/[locale]/`, `defaultLocale` and routing-strategy configuration (prefix-always vs prefix-other-locales), URL helper functions from `astro:i18n` (`getRelativeLocaleUrl`, `getAbsoluteLocaleUrl`), reading `Astro.currentLocale` in components, and fallback-locale configuration to avoid 404s on missing translations. Also covers translating Content Collections per locale and adding `hreflang` alternate links via `@astrojs/sitemap`'s `i18n` option for SEO. Does not cover general SEO meta tags beyond hreflang (astro-seo) or the Content Layer API itself (astro-content) — this skill focuses specifically on locale routing and URL generation. </objective> # Astro i18n ## Agent Workflow (MANDATORY) Before ANY implementation, spawn 3 agents in parallel, one `Agent` call each with a `name`: 1. **fuse-ai-pilot:explore-codebase** - Analyze existing routing, content collections, and locale files 2. **fuse-ai-pilot:research-expert** - Verify latest Astro i18n docs via Context7/Exa 3. **mcp__context7__query-docs** - Check `astro:i18n` API and sitemap integration After implementation, run **fuse-ai-pilot:sniper** for validation. --- ## Overview ### When to Use - Building multilingual Astro sites with locale-prefixed URLs - Configuring `defaultLocale` and routing strategies - Generating locale-aware links with `getRelativeLocaleUrl()` - Reading `Astro.currentLocale` in components an...