sessionpipe-gui v0.4.1

Fixed

• Approving the Mac app says how. Its page names the two ways: open Machines in the
  browser that holds your passkey (a link opens it), or run sessionpipe control pair on
  the machine and approve it in the app with Touch ID. "Sign with Touch ID" is now
  Approve this Mac, and a composer on a machine that doesn't trust this Mac yet says
  what approving does.
• A passkey prompt that never shows no longer leaves Approve spinning in the browser:
  after eight seconds the row says where the passkey may be and what else to try.
• Setup in the app. Step 2 no longer asks for passkeys on the app's page (Touch ID
  signs there; the https address is the phone's), so the sidebar's Setup dot can clear.
  Step 3 is done only once the paired machine trusts this Mac, with Approve this Mac until
  then.