signup
@PostMapping(value = "/signup" )
Sign up a new user and start a session. What this does in plain words: - Creates a user account if the email is not already used. - If you include a DPoP header, the access token we return will be “tied” to your browser key, so it can’t be replayed on another device. - Also issues a long-lived refresh cookie so you don’t have to log in again soon. Headers: - DPoP (optional): a one-time proof for this HTTP request. If present, we bind tokens to your key.
Deprecated (for removal)
Overload without DPoP or request argument for tests.