A remote client that passes --cdm, has a cdm entry for the service that named the loaded device, or sets server_cdm: false now declines the server CDM at session create, and warns when the server keeps it. A service option listed in SERVER_DEVICE_OPTIONS keeps the server CDM.
Relay the service's CDM calls to the client, accept the service's allowed identity config (for example ESN/Kpe/Kph), add the server_vault grant and a lent server-device mode that reads keys only from vaults and returns no login cache. Also fixes the proxied certificate fetch, Base64 Widevine licences, an answered call that stayed pending and a missing default quality.
A session above the cap licenses with the client's own device, and a track above it in an uncapped -q run is handed back to the client. Also names the fallback in the ccextractor crash warning.
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