[Refactor] Replace hardcoded categories with data-driven SO system and abstract dice

- Add abstract dice system (IDie interface, DieDefinitionSO, StandardDieSO, DieInstance)
  to support future custom dice types while keeping backward compat via int[] DiceValues
- Replace YachtCategory enum and CategoryScorer switch with CategoryDefinitionSO hierarchy:
  SumOfValueCategorySO, NOfAKindCategorySO, FullHouseCategorySO, StraightCategorySO, SumAllCategorySO
- Add CategoryCatalogSO for ordered category collections and DiceCheckUtility for shared logic
- Refactor ScoringSystem, Views, GameManager, GameController to use SO references
- Update CategoryCondition modifier to use SO reference instead of enum
- Update all editor tests to use SO-based categories and DieInstance

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

Assets/Scripts/Inventory/InventoryController.cs

@@ -1,4 +1,5 @@
 using UnityEngine;
+using YachtDice.Categories;
 using YachtDice.Economy;
 using YachtDice.Modifiers.Runtime;
 using YachtDice.Scoring;
@@ -73,7 +74,7 @@ namespace YachtDice.Inventory
             RefreshView();
         }
 
-        private void HandleCategoryConfirmed(YachtCategory category, ScoreResult result)
+        private void HandleCategoryConfirmed(CategoryDefinitionSO category, ScoreResult result)
         {
             model.ConsumeUseOnActive();
         }