Update methods to be internal, remove invocation bloat

Assets/Scripts/Core/GameManager.cs

@@ -37,7 +37,7 @@ namespace Core
         // ManagedBehaviour configuration
         public override int ManagedAwakePriority => 10; // Core infrastructure - runs early
 
-        protected override void OnManagedAwake()
+        internal override void OnManagedAwake()
         {
             // Set instance immediately (early initialization)
             _instance = this;
@@ -55,7 +55,7 @@ namespace Core
             _managerLogVerbosity = DeveloperSettingsProvider.Instance.GetSettings<DebugSettings>().gameManagerLogVerbosity;
         }
 
-        protected override void OnManagedStart()
+        internal override void OnManagedStart()
         {
             // Settings are already initialized in OnManagedAwake()
             // This is available for future initialization that depends on other managers