Dataset Discovery v1 Endpoints Marked Deprecated

We marked the following Dataset discovery endpoints as deprecated in our OpenAPI documentation and added guidance directing consumers to the v1.2 versions:

• GET /api/v1/datasets → GET /api/v1_2/datasets
• GET /api/v1/datasets/{datasetName}/fields → GET /api/v1_2/datasets/{datasetName}/fields
• POST /api/v1/datasets/{datasetName}/field-options → POST /api/v1_2/datasets/{datasetName}/field-options

The annotations did not disable the v1 endpoints or remove access. No sunset date or removal timeline has been set, and existing integrations can continue using them. We recommend v1.2 for new development because it provides standardized error responses and improved request tracing.