Fairer scheduling, and a few spending paths closed

Scheduled AI-visibility scans and recurring audits now take turns across workspaces, so one workspace with many brands or targets — or one that has run out of credits — can no longer hold up everyone else's refresh. A cancelled deck stays cancelled even if a pipeline step was already running, and a deck whose credits were refunded can no longer be resumed: start a new one instead (resuming is now limited to editors). Password-reset emails are rate-limited per network and per address. A promo code can no longer be used twice by opening several checkouts before paying; if you already have a discounted checkout open, finish it or try again in 30 minutes. Subscription refunds now set the period's credits aside the moment you ask, and a workspace can keep up to 50 active recurring audits.