Easier account signup using email codes

[rishabh]

Update

Thanks to @keegan’s latest work, we now have a username generation feature in this step that prefills a suggestion:

@rishabh

Random usernames for new accounts

New members who sign up without a recognisable username in their email are now given a friendly generated name like “QuietFalcon42” instead of a generic placeholder like user1. The account-ready step prefills the suggestion and includes a dice button to roll a new one.

The word lists behind the suggestions are configurable via the random_username_adjectives and random_username_nouns site settings, so communities can tune them to their tone or language. To opt out and keep the old numbered fallback, disable enable_random_usernames.