Optional ReadonlydirectorySuggestions for an account with no list; the built-in ones without it.
ReadonlylookupServers that index accounts' lists, asked on every lookup and every save.
Optional ReadonlypatienceHow long to wait for a lookup server that never finishes; 15 s by default.
ReadonlypoolReadonlypubkey$The active account's public key; the lookup follows it and ends when it completes.
ReadonlysignerThe active account's signer, when it can sign.
ReadonlystoreThe shell's event store; found and saved lists are added to it.
Options for createAccountMailboxes.