fitme3070.pt is off the .andmore.pt cookie scope, so am_sso never arrives
and login never provisioned the user. Redeem the ?sso_ticket=… the hub now
appends to the return URL instead.
- sso_redeem_ticket(): atomic single-use burn of sso_tickets in the central
DB, bound to PLATFORM_SLUG, then provision the local row + FIT_SESS session.
- Extract _sso_provision_local() shared with the cookie path.
- views/auth/login.php redeems the ticket before the cookie fallback.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
