Revoke the caller’s current access token.
get_current_user authenticates the request (verifying the JWT and
checking revocation status). We then look up the token’s expiry from the
principal cache — it is always present after get_current_user runs —
and write the token hash to the revocation table.
The UI should also redirect the user through the WorkOS logout flow so the session is terminated at the IdP level.
Successful Response