Arcthesia/ArcCreate — reverse-engineered prompt

I want this repo turned into a working community rhythm game editor and player called ArcCreate. It should feel fast and polished, with a desktop editor for creating and managing .aff chart projects, editing notes, timing and camera, changing skin and metadata, setting custom hotkeys, rendering video with FFmpeg, and using Lua for macros plus scene control editing and compiling.

I also want the playable side to work well on desktop and mobile, with gameplay rendering and judgement, pause, song or level selection, settings, results, and importing levels from package files. The desktop editor should be able to talk to the mobile app over LAN so testing charts is easy.

Please build it in the Unity version the project expects, make it run on Windows, MacOS, Linux, Android, and iOS where appropriate, and keep the scope aligned with what the repo already says is done. You do not need to invent controller support or custom gauge stuff if it is not finished yet. Look up current docs online if you need to.