Erase user under GDPR

Permanently erases a deactivated person's personal data to satisfy a right-to-be-forgotten request: it anonymizes their profile and hard-deletes their passkeys, linked identities, sessions, and location role assignments. The account must already be deactivated. You cannot erase your own account or the last remaining account owner. Only an account owner can do this to an owner, and you cannot do it to a person who holds a permission you do not hold. An API key is never an owner.

Notes.

• Irreversible. The same rule as deactivation applies: only an owner can erase an owner, and the caller must hold every permission the person holds.