sessionpipe-gui v0.7.3

Fixed

• The pairing link the terminal prints names a passkey origin. sessionpipe control pair printed the address the daemon reached the GUI on (a tailnet IP, a LAN name), and
  a page on that address can neither read the board without its key nor make or use a
  passkey, which belongs to the https host or to localhost. The link now names an origin
  passkeys work on: the daemon's own when it is one, else the first. Seen pairing a Mac
  mini with the GUI on a laptop: the printed http://100.68.187.81:7373/pair link met the
  key wall, then "Sending works from https://…; open it there".