Move the CMAF app seed from a hardcoded constant in qbz-cmaf to a
parameter passed by callers. The seed now lives in qbz-qobuz::auth
where other app-level constants are defined. This resolves CodeQL
alerts for hard-coded cryptographic values.
Also truncate session_id in logs to avoid cleartext logging of
sensitive session identifiers.
cc
vicrodh
4505312280