- uk.json: full Ukrainian translation, uk added to SUPPORTED_LOCALES with
  the shared slavic plural rules and a language option in settings
- /p/<token> and /r/<token> are now served by the API: it injects
  og:title/description/url/image/video + twitter:card into the panel's
  index.html so Telegram and Jira previews show the project or report
  (title, description, creation date, screenshot/video). Caddy proxies
  those paths to the server; the public origin comes from PUBLIC_BASE_URL
  or the request host. Verified end-to-end through the prod stack.

Co-Authored-By: Claude Code <noreply@anthropic.com>