3344

Added

• Per-Game Mouse Detection — MouseGameRegistry intelligently gates mouse UI to games that actually use a mouse peripheral. Always-on for DOS/Macintosh/AtariST; game-specific for SNES (Mario Paint, Mario & Wario), Dreamcast, Saturn, and PSX. Prevents false-positive mouse overlays on SNES titles that don't use a mouse
• MouseGamesProvider protocol — Cores can declare compile-time mouse game support lists for registration at startup
• Per-game mouse override — Users can force mouse on or off for any individual game via MouseGameRegistry.shared.setUserOverride(_:forMD5:), persisted in UserDefaults