libSceMouse technical debt

libSceMouse additional exports - these name/NID pairs are present in the 13.60 export inventory. Parameter lists, return types and behavior are unverified. Parameterless int declarations are import-resolution placeholders, not verified ABI prototypes; every entry throws through NotImplemented_nid_no_patch. No runtime functionality is implemented.

Name	NID
`sceMouseDisconnectAll`	`8fjFFh4zZXU`
`sceMouseExtensionGetCursor`	`UBO+tFHvcyE`
`sceMouseExtensionRead`	`doRbAW89lZE`
`sceMouseExtensionReadState`	`CvUnq1gsWMg`
`sceMouseExtensionScalePosition`	`GE+ZU2Y9pEs`
`sceMouseExtensionSetConfig`	`T4BHUjH773k`
`sceMouseExtensionSetCursor`	`2KVa2-HqIRs`
`sceMouseGetHandle`	`P+9UQOe1F2g`
`sceMouseVirtualDeviceAddDevice`	`JB6ycme-yJ8`
`sceMouseVirtualDeviceDeleteDevice`	`HN2s86AOUiM`
`sceMouseVirtualDeviceGetCursor`	`rdrYJpbUJyA`

sceMouseDisconnectAll, sceMouseVirtualDeviceAddDevice, sceMouseVirtualDeviceDeleteDevice and sceMouseVirtualDeviceGetCursor - the names and NIDs are recorded in the 13.60 export inventory. Signatures and behavior remain unknown; the parameterless int declarations only resolve imports and every call throws. Not measured on a console.
sceMouseConnectPort, sceMouseDebugGetDeviceId, sceMouseDeviceOpen, sceMouseDisconnectDevice, sceMouseDisconnectPort, sceMouseGetDeviceInfo, sceMouseMbusInit, sceMouseSetHandType, sceMouseSetPointerSpeed and sceMouseSetProcessPrivilege (libSceMouse) - names and NIDs are present in the PS5 3.20 export inventory; the no-argument prototypes follow shadPS4's PS4 stubs, not measured on a console. These declarations have no parameters solely to resolve known imports and make no ABI claim.
sceMouseReadAbsolutePosition, sceMouseSetAbsoluteHighPrecisionMode and sceMouseSetAbsoluteVirtualScreenSize (libSceMouse) - the names match unresolved NIDs reported by a title, but their signatures and behavior are not verified. These no-argument declarations only resolve imports; the exports throw if called.

sceMouseResetAbsolutePosition (libSceMouse) - the position is not stored because the host reports relative motion only. Native input widths and validation are confirmed, including the default 1920 by 1080 bounds; other native coordinate modes and absolute reports remain unimplemented