Add button interaction system with event publishing and requirements handling

GameCore/ECS/World.cs

@@ -3,6 +3,7 @@ using GameCore.ECS.Interfaces;
 using GameCore.Events;
 using GameCore.Events.Interfaces;
 using GameCore.Input.Interfaces;
+using GameCore.Interaction;
 using GameCore.Logging.Interfaces;
 
 namespace GameCore.ECS;
@@ -112,4 +113,18 @@ public class World(IInputService inputService, IWorldQuery worldQuery, Simulatio
     {
         _eventBus.Unsubscribe(handler);
     }
+
+    public Entity? FindEntityByWorldId(string worldId)
+    {
+        if (string.IsNullOrEmpty(worldId)) return null;
+
+        foreach (var entity in _componentsByEntityId.Keys.Select(id => new Entity(id)))
+        {
+            var idComponent = GetComponent<WorldIdComponent>(entity);
+            if (idComponent != null && idComponent.WorldId == worldId)
+                return entity;
+        }
+
+        return null;
+    }
 }