libSceAcm technical debt

libSceAcm batches execute as silent no-ops, so sceAcm_ConvReverb_SharedInput, sceAcm_FFT and sceAcm_Panner return success without encoding audio commands.

Context validation error codes (0x81940002 for bad context and 0x81940006 for bad pointer) for libSceAcm follow prosper's hle_audio_spatial.cpp. KytyPS5 (acm.cpp) and prosper do not track individual batch identifiers, so sceAcmBatchWait returns success for valid contexts without inspecting batch IDs. Hardware ACM DSP coprocessor scheduling and console error verification remain unmeasured.
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
PPSA02530 imports declared without parameters, signatures unknown, added without an implementation because the title fails to load without them: sceAcmBatchJobPriority (libSceAcm) and scePadVrControllerGetTriggerEffectStates (libScePad).
sceAcmBatchJobNotification is a parameterless pending declaration for import resolution. Its signature and behavior are unverified; it throws through NotImplemented_nid_no_patch.