Add internationalization (i18n) to an existing T3/Next.js project using next-intl with sub-path routing. Uses localePrefix: \"as-needed\" so the default locale keeps its URLs unprefixed (preserving existing SEO and backlinks), and only non-default locales get a prefix.
How to install add-i18n?
flavien-ia/hypervibe-harness/add-i18n
$npx -y skills add flavien-ia/hypervibe-harness --skill add-i18nInstalls into the current project.
›Prefer a prompt? Paste this to your agent
Run `npx skills use "https://github.com/flavien-ia/hypervibe-harness" --skill "flavien-ia/hypervibe-harness/add-i18n"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/flavien-ia/hypervibe-harness" that are relevant to the current task. Run `npx skills add "https://github.com/flavien-ia/hypervibe-harness"` and select the relevant skills, then follow their instructions.
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