I need a complete, clean Unity project that delivers a polished Mahjong game for mobile. The build must compile and run smoothly on both iOS and Android, so cross-platform settings, touch input, and screen-size adaptations should already be in place. The game has to include both single-player and multiplayer modes. For single-player, the usual tile-matching rules, shuffle logic, scoring, and an optional hint/replay system are enough. For multiplayer, a real-time room-based setup with basic chat and matchmaking will do; Photon, Mirror, or Unity Netcode are all acceptable as long as setup instructions are included. What I expect as the final hand-off: • Entire Unity project folder with C# source, prefabs, scenes, shaders, and plugins • Clear build instructions for Xcode and Android Studio, plus any external service keys or SDK steps • Lightweight documentation (README is fine) explaining project structure, main scripts, and where to tweak logic or UI Code should be well-commented and organized so I can extend it later. If any third-party assets are used, confirm their license allows redistribution of source.