AppFoundry WebSocket drops on Cognigy bot handoff

Pushing trace context via the Genesys Cloud WebSocket guest API causes immediate disconnects when routing to a Cognigy bot. The connection stays alive for standard IVR but dies on the first audio frame from the bot integration. Here’s the error log from the client:

WebSocket connection failed: 1006 (abnormal closure)
Trace ID: 0af72594e1fb0d7e

Any idea if the AppFoundry container is stripping headers or dropping the socket on the bot handshake?