AccountCrypto makes the keys of an account that signs in with SimpleLogin
(newKeys): new key pairs or an anonymous person's device keys, wrapped
under the password and a new recovery phrase, with the public half of the
password's proof key in place of SRP's verifier. It proves the password to
open them (proveKeysPassword: one Argon2id for the proof and the unwrapping)
and the recovery phrase to link a new SimpleLogin account in place of a
lost one (signMendProof, bound to the attempt). The interop tests check all
three against the register's own checks.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>