Add native Durak, poker, blackjack, roulette, Buckshot and billiards scenes with animation assets and regression tests. Improve arrival, city, hall, profiles, shops, audio and exit handling; remove the portable C game core and refresh shipping executables.
- Fix Little-Endian DIB color inversion (0000FFFFh/0000D7FFh -> 00FFFF00h/00FFD700h) restoring luxurious Gold, Emerald Felt, and Crimson Red palettes across the entire game
- Extract authentic IBM VGA 8x8 font from app866.fon fixing Cyrillic glyph distortion ('М', 'Л', 'П', 'Д')
- Implement native in-engine 2.5D Dead by Daylight Skill Check (MODE_SKILL) eliminating external console popups
- Fix audio mappings to dedicated minigame sounds with zero gunshots outside Russian roulette
- Update visual rasterization test suite and verified 640x480 preview renders
