The rescue onboarding emails hardcoded a 60-minute expiry -- way too short for a
paid customer who hasn't engaged yet (they may not check email for hours/days),
so Paul's and Mitchell's links expired before they used them. Onboarding links
now last 7 days (ONBOARDING_TTL_MINUTES); the standard security password-RESET
window bumped 30min -> 2h. Re-issued fresh 7-day links to all 3 affected
customers (none had set a password yet) via reissue-onboarding-links.mjs, cc'd.
