Adds CreateSemaphore/ReleaseSemaphore/WaitForSingleObject/CloseHandle/
SetThreadPriority/_beginthreadex to Win32Crt; port.file_loader_thread covers
the shims, CThread and both the un-Created (40250 live) and Created loader.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
CPythonGraphic::SaveScreenShot queues a readback of the next presented
frame (ScreenShotHost -> VulkanWindow::request_frame); WriteScreenShot runs
the rest of 40250's function verbatim (X8R8G8B8 rows, SaveJPEG, EXIF tag).
jpeg_save is encoded with stb_image_write. SHGetSpecialFolderPath returns
$HOME/Documents (else cwd); CreateDirectory/_access/jpeg_save accept '\\'.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Copy SoundBase/SoundData/SoundInstance*/SoundManager*/Type from 40250 and
implement the AIL_* calls they make in MilesAil.cpp (2D pan, 3D distance and
listener pan, threaded stream decode, loop counts). The SDL host drains the
mixer. CSoundManager is created/updated/destroyed where 40250 does it and the
old AudioCommands bridge is removed. Port-map MilesLib 142/142 PORTED.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>