Correct the clean IDD MsQuic archive lookup and enable XSAVE
for MinGW CPU probing.
Compile audio transports with precise floating-point semantics so
finite-value validation remains valid under Clang. Install the OBS
samplerate development dependency.
Expose the insecure MsQuic draft API and add an opt-in setting on both
peers. Query the negotiated state after connection establishment so
one-sided opt-in remains encrypted and is logged accurately.
