libSceAcm technical debt

libSceAcm batches execute as silent no-ops, and do not execute encoded panner and FFT commands. sceAcm_ConvReverb_SharedInput returns success without encoding audio commands.

libSceAcm context creation, batch submission and waiting use host identifiers instead of the native device and ioctl requests. Batch identifiers, timeout handling, DSP scheduling and service-side errors remain unimplemented. Panner source parameter and matrix payloads are forwarded by the native library; their DSP interpretation remains unverified.
sceAcm_ConvReverb_SharedIr, sceAcm_IFFT (libSceAcm) - their names and NIDs are in the PS5 3.20 export inventory, but no credible prototypes were found. They are declared without parameters solely to resolve known imports; this is not an ABI claim
sceAcmBatchJobNotification is a parameterless pending declaration for import resolution. Its signature and behavior are unverified; it throws through NotImplemented_nid_no_patch.
The shared-input reverb signature and descriptor fields are recovered from native accesses. Input history indices are mutable; block metadata representation, reverb command encoding and DSP interpretation remain unimplemented in libSceAcm.