### 1.12.0
:rocket: New features
* Renamed all `/api/model` paths to `/api/tango_model` in both private and public API specifications for consistency with the platform naming convention.
* Added `model_card_file_id` as a required field to `ModelPayload` in the private API — model registration now requires a model card file reference uploaded via storage-manager.
* Added `model_card_file_id` as a read-only optional field to `ModelPayload` and `ExplainableModelPayload` in the public API response schemas.
* Added `GET /api/tango_model/{model_code}/version/{model_version}/model_card` endpoint to the public API for downloading model card files.
* Added `POST /o/token/` endpoint to the auth API documenting the OAuth2 client_credentials grant for service principal (machine-to-machine) authentication.
* Added `OAuthTokenBody` and `OAuthTokenResponse` schemas to the auth API.
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