WFM Scheduling Endpoint 401 on Shift Coverage Connector

Pushed the shift coverage connector to client staging org using genesys-cloud-sdk-js@3.62.1. WFM scheduling endpoint doing jack all. Keeps rejecting POST to /api/v2/wfm/scheduling/assignments with 401 Unauthorized even though it’s refreshing fine and the Authorization header contains a valid Bearer token. Payload matches schema exactly but the gateway just drops it.