Headless / SSH / WSL users won't have \`open\` or \`xdg-open\` wired up,
so the deep-link fails silently and they have no clue where to go.
Always print https://t.me/<username> so the URL is at least clickable
or copy-pasteable from the terminal.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>