Add multi-language support (i18n) to this Lovable app using Lingui. Use when the user asks to add i18n, internationalization, localization, or translations — "translate my app", "make my app multilingual", "add Spanish/French/German support", "add a language switcher", "support multiple languages", or "connect Globalize". Covers setup (Vite SPA and TanStack Start), wrapping hardcoded text, PO catalogs, a GitHub Action that keeps catalogs in sync, coding rules in AGENTS.md, and connecting the Globalize.now translation platform (via its MCP connector).
