The fourth reading's first finding: password.set took a session alone,
so whoever took one made a GitHub-only account, or an address account
without a password, theirs for good (their address or password, their
authenticator; GitHub then refused the owner).
- An account with an address proves it anew: a code mailed to that
address for this (EmailCodePurpose.firstPassword, its own mail), never
the session alone, a code asked for anything else, or another address.
- An account that signs in with GitHub alone does it within 10 minutes of
a GitHub sign-in (the session's method and creation time, where the
session lives; members tell the register), refused signInAgain before
any code is used; the address it adds is proved as before.
- Anonymous people still become identified with a code to the address
they add.
The app mails the code to the person's own address (asking for it where
the device doesn't know it), offers a password right after a GitHub
sign-in (D2's "at their next sign-in") before the person's app, and asks
for a GitHub sign-in anew when the instance refuses an older one, keeping
the code typed.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>