List Mine

List api_keys attached to the authenticated account.

Response shape::

{"keys": [{"id":..., "name":..., "key_prefix":...,
           "rate_limit":..., "daily_cap":..., "scopes":[...],
           "expires_at":..., "created_at":..., "status":...}]}

Never returns the raw api_key -- only the key_prefix (first ~10 chars). Once a key is provisioned the raw value is gone for good; rotation = revoke + create-new.