Port the APIToken resource from /api/v1 to the Huma-backed /api/v2 at
top-level /tokens. List/create/delete only — no ReadOne, no Update,
matching v1. The list operation accepts an owner_id query param to list
a caller-owned bot's tokens; create returns the cleartext token exactly
once. Permissions are enforced by the model via the shared Do* helpers.
The webtest ports the v1 model-level permission matrix onto the v2 HTTP
surface (owner isolation, exact list cardinality, bot-owner authz,
validation, forbidden delete) so v2 proves the contract independently.
kolaente