feat: add upgrade scrolls

src/core/config/Items.ts

@@ -26,6 +26,12 @@ export const CONSUMABLES = {
     throwable: true,
     stackable: true,
   },
+  upgrade_scroll: {
+    name: "Upgrade Scroll",
+    textureKey: "items",
+    spriteIndex: 79,
+    stackable: true,
+  },
 } as const;
 
 export const RANGED_WEAPONS = {
@@ -224,6 +230,19 @@ export function createArmour(
   };
 }
 
+export function createUpgradeScroll(quantity = 1): ConsumableItem {
+  const t = CONSUMABLES["upgrade_scroll"];
+  return {
+    id: "upgrade_scroll",
+    name: t.name,
+    type: "Consumable",
+    textureKey: t.textureKey,
+    spriteIndex: t.spriteIndex,
+    stackable: true,
+    quantity,
+  };
+}
+
 // Legacy export for backward compatibility during migration
 export const ITEMS = ALL_TEMPLATES;