add late_draw schedule

ui/rlmu.odin

@@ -87,7 +87,7 @@ begin :: proc(state: ^RLMU_State = global_state) -> ^mu.Context {
 }
 
 // tell microui the frame is finished, then replay its command list as raylib
-// draw calls (and close any lingering scissor). UIPlugin runs it at POST_DRAW
+// draw calls (and close any lingering scissor). UIPlugin runs it at LATE_DRAW
 end :: proc(state := global_state) {
 	// Tell mui that we're done drawing ui
 	mu.end(&state.ctx)

ui/shoal.odin

@@ -11,16 +11,14 @@ ui_ctx: ^ml.Context
 //
 //	STARTUP     init() bakes the microui atlas into a texture
 //	PRE_DRAW    begin() forwards raylib input, starts the frame, stashes ui_ctx
-//	POST_DRAW   the frame's temp arena is freed, then end() renders the ui
+//	LATE_DRAW   end() renders the ui after all game drawing, still in-frame
+//	POST_DRAW   the frame's temp arena is freed
 //	DESTROY     destroy() unloads the atlas texture
-//
-// (systems within a schedule run in registration order, so POST_DRAW frees
-// the arena first and renders second)
 UIPlugin :: proc(app: ^ecs.App) {
 	ecs.add_system(app, ecs.STARTUP, proc() {init()})
 	ecs.add_system(app, ecs.POST_DRAW, proc() {free_all(context.temp_allocator)})
 	ecs.add_system(app, ecs.PRE_DRAW, proc() {ui_ctx = begin()})
-	ecs.add_system(app, ecs.POST_DRAW, proc() {end()})
+	ecs.add_system(app, ecs.LATE_DRAW, proc() {end()})
 	ecs.add_system(app, ecs.DESTROY, proc() {destroy()})
 }