Revamp the prompt system, the bootstrapper system, the starting cinematic

Assets/Scripts/Core/ItemManager.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using UnityEngine;
 using Interactions;
+using Bootstrap;
 
 namespace Core
 {
@@ -14,23 +15,10 @@ namespace Core
         private static ItemManager _instance;
         private static bool _isQuitting;
 
-        public static ItemManager Instance
-        {
-            get
-            {
-                if (_instance == null && Application.isPlaying && !_isQuitting)
-                {
-                    _instance = FindAnyObjectByType<ItemManager>();
-                    if (_instance == null)
-                    {
-                        var go = new GameObject("ItemManager");
-                        _instance = go.AddComponent<ItemManager>();
-                        // DontDestroyOnLoad(go);
-                    }
-                }
-                return _instance;
-            }
-        }
+        /// <summary>
+        /// Singleton instance of the ItemManager. No longer creates an instance if one doesn't exist.
+        /// </summary>
+        public static ItemManager Instance => _instance;
 
         private readonly HashSet<Pickup> _pickups = new HashSet<Pickup>();
         private readonly HashSet<ItemSlot> _itemSlots = new HashSet<ItemSlot>();
@@ -63,13 +51,16 @@ namespace Core
         void Awake()
         {
             _instance = this;
+            
+            // Register for post-boot initialization
+            BootCompletionService.RegisterInitAction(InitializePostBoot);
         }
-
-        void Start()
+        
+        private void InitializePostBoot()
         {
             // Subscribe to scene load completed so we can clear registrations when scenes change
-            // Access Instance directly to ensure the service is initialized and we get the event hookup.
             SceneManagerService.Instance.SceneLoadStarted += OnSceneLoadStarted;
+            Logging.Debug("[ItemManager] Subscribed to SceneManagerService events");
         }
 
         void OnDestroy()