time-of-day + creature spawns in spawn zones

scripts/core/WorldClock.cs

@@ -0,0 +1,30 @@
+using Godot;
+
+public partial class WorldClock : Node
+{
+	public enum TimeOfDay { Morning, Day, Night }
+
+	[Export] public TimeOfDay Current { get; private set; } = TimeOfDay.Day;
+
+	public override void _Process(double delta)
+	{
+		// Debug toggle: press T to cycle
+		if (Input.IsActionJustPressed("debug_cycle_time"))
+		{
+			Current = Current switch
+			{
+				TimeOfDay.Morning => TimeOfDay.Day,
+				TimeOfDay.Day => TimeOfDay.Night,
+				_ => TimeOfDay.Morning
+			};
+			GD.Print($"TimeOfDay -> {Current}");
+		}
+	}
+
+	public static string ToPackString(TimeOfDay t) => t switch
+	{
+		TimeOfDay.Morning => "morning",
+		TimeOfDay.Day => "day",
+		_ => "night"
+	};
+}