Extend VContainer DI: eliminate manual composition and duplicate references

- Register InventoryModel, ShopModel as container-managed singletons
- Register GameController, ShopController, InventoryController via RegisterComponent
- Replace [SerializeField] with [Inject] for service dependencies in controllers
- Move maxActiveModifierSlots config to GameLifetimeScope (composition root)
- Remove manual model creation and Initialize() calls from GameController
- Add ToggleVisibility() to ShopController/InventoryController, removing GetComponentInChildren
- Move event subscriptions from Awake to Start for safe VContainer injection order
- Transfer game startup orchestration to GameController.Start()

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Assets/Scripts/Inventory/InventoryController.cs

@@ -1,4 +1,5 @@
 using UnityEngine;
+using VContainer;
 using YachtDice.Categories;
 using YachtDice.Economy;
 using YachtDice.Modifiers.Runtime;
@@ -9,25 +10,29 @@ namespace YachtDice.Inventory
     public class InventoryController : MonoBehaviour
     {
         [SerializeField] private InventoryView inventoryView;
-        [SerializeField] private ScoringSystem scoringSystem;
-        [SerializeField] private CurrencyBank currencyBank;
 
         private InventoryModel model;
+        private ScoringSystem scoringSystem;
+        private CurrencyBank currencyBank;
 
         public InventoryModel Model => model;
 
-        public void Initialize(InventoryModel inventoryModel)
+        [Inject]
+        public void Construct(InventoryModel model, ScoringSystem scoringSystem, CurrencyBank currencyBank)
         {
-            model = inventoryModel;
+            this.model = model;
+            this.scoringSystem = scoringSystem;
+            this.currencyBank = currencyBank;
+        }
 
+        private void Start()
+        {
             inventoryView.OnActivateClicked += HandleActivate;
             inventoryView.OnDeactivateClicked += HandleDeactivate;
             inventoryView.OnSellClicked += HandleSell;
 
             model.OnInventoryChanged += HandleInventoryChanged;
-
-            if (scoringSystem != null)
-                scoringSystem.OnCategoryConfirmed += HandleCategoryConfirmed;
+            scoringSystem.OnCategoryConfirmed += HandleCategoryConfirmed;
 
             RefreshView();
         }
@@ -48,6 +53,16 @@ namespace YachtDice.Inventory
                 scoringSystem.OnCategoryConfirmed -= HandleCategoryConfirmed;
         }
 
+        public void ToggleVisibility()
+        {
+            if (inventoryView == null) return;
+
+            if (inventoryView.IsVisible)
+                inventoryView.Hide();
+            else
+                inventoryView.Show();
+        }
+
         private void HandleActivate(ModifierInstance instance)
         {
             model.TryActivate(instance);