window.location.href=deep_link navigated the whole PWA to t.me, destroying the
/tg-wait polling screen -> the authenticated token was never fetched. Prefetch
the pairing session and open Telegram via an <a href> (OS app-switch, PWA stays
mounted polling); add an Open-Telegram fallback link on the wait screen.
Co-Authored-By: claude-flow <ruv@ruv.net>