Firenook 0.2.1

0.2.1 — sign-in from any address, and a sign-in page in the console's look

• Pin the engine to 6556f79b2fda6ccc53c4700aff5fffc029939cde, the merge of
  PR #133 on 0.2.0 and
  PR #132. Its tree is
  the PR head's, b49e9d8, which passed CI
  (run 41892010113)
  and the five-platform packed-install matrix
  (run 41892010175).
• Popup sign-in from a LAN address or a container name. Over plain http
  on any name but localhost, a browser has no crypto.randomUUID. The
  account picker called it inside a try that skips other origins' frames,
  so the matching Auth iframe was skipped too and the page said "Cannot find
  the matching Firebase Auth iframe"; adding an account threw the same way.
  The ids now come from crypto.getRandomValues, which every page has, and
  the popup finishes as it does on the official emulator, recorded from
  firebase-tools 15.22.0 in the same mode.
• Saved rules tests from such an address. The console threw the same way
  when you added a test, and now saves it.
• The sign-in page, in the console's look. The page a popup or redirect
  opens now shows your project, the provider's test accounts with their
  photos or initials, and a filter once there are eight or more. It stays
  light whatever the system's theme, as a provider's sign-in page does, and
  works on a phone. Its fonts are built in, and it asks for nothing beyond
  the emulator except an account's own photo.
• A new random user from the sign-in page. "New random user" opens the
  form filled with a made-up name and email, so you see who you are about to
  be and can change it before signing in. "Fill in random" does the same on
  an empty form, and the next sign-in offers that account like any other.
• Small things. firenook and its native packages link to
  firenook.dev on npm, and init suggests
  npm i -D firenook without -E.
• No emulator protocol, port or data format changed: 0.2.1 opens what 0.2.0
  saved as it is, and 0.2.0 opens what 0.2.1 saves.
• Published straight to latest; the CLI's next stays on 0.2.0 until it is
  moved by hand.