ImmediateHotReloadInstall
Studio-only installer that keeps an ImmediateScheduler's systems folder in sync with Rojo. Clone-based require busts ModuleScript identity cache; ImmediateScheduler.RegisterSystem replaces by name and Destroy()s the previous system.
Shadow publication (Rojo's ServerScriptService copy of a ReplicatedStorage tree) is based on the same idea as sayhisam1/Rewire's HotReloader (https://github.com/sayhisam1/Rewire/blob/main/src/HotReloader.lua, MIT).
ImmediateInstall.stackN(..., ImmediateHotReloadInstall.install(systemsFolder))
ImmediateHotReloadInstall.mirrorShadow(liveSystemsFolder)