libSceSocialScreen technical debt

sceSocialScreenCloseSeparateMode, sceSocialScreenConfigureSeparateMode, sceSocialScreenCrashDaemon, sceSocialScreenGetIgnoreSeparateMode, sceSocialScreenInitialize, sceSocialScreenOpenSeparateMode, sceSocialScreenReserveHighFrameRateVideoCaptureRequest, sceSocialScreenSetIgnoreSeparateMode, sceSocialScreenSetMode and sceSocialScreenTerminate (libSceSocialScreen) - names and NIDs are present in the PS5 3.20 export inventory, but no credible prototypes were found. The declarations have no parameters solely to resolve known imports; this is not an ABI claim and callers must not call them until signatures are verified
sceSocialScreenInitializeSeparateModeParameter (libSceSocialScreen) - the layout of the 32-byte parameter block is unknown. It follows firmware 13.42's libSceSocialScreen.sprx, read from its disassembly and run natively on x86-64 (not a console): a null pointer returns 0x81440003; otherwise it stores the 32-bit value 1 at offset 0, clears bytes 4 to 31, leaves later bytes unchanged and returns 0. Returning 0x81440003 for an unwritable parameter is a host-safety fallback; console behaviour for unwritable memory has not been measured.