Google works once the OAuth client credentials are set on the realm.
New accounts start with no membership tier — the tier arrives on purchase. A verification code is emailed after registration (dev: read it at MailHog).
/api/v1/me)Requires the current password; logs out every other device.
/api/v1/membership)Upgrades apply immediately. Downgrades are scheduled for the 1st of next month — the current tier keeps running until then. Selecting your current tier while a change is pending cancels the change. “Simulate month rollover” stands in for the billing-cycle job.
/api/v1/membership/history)