Guard source gear namespaces and retain recoverable legacy records (#9)

src/game/lootPolicy.ts

@@ -1,8 +1,14 @@
-import type { InventoryItem } from "./lootTypes";
+import type { ContentCategoryId } from "../app/contentCategories";
+import { inventoryItemUsableForCategory, type InventoryItem } from "./lootTypes";
 
 /** Leveling dungeon bosses award cards through the separate boss-card path. */
-export function allowedLootDrops(drops: readonly InventoryItem[], playerLevel: number): readonly InventoryItem[] {
-  return Number.isFinite(playerLevel) && playerLevel >= 80
+export function allowedLootDrops(
+  drops: readonly InventoryItem[],
+  playerLevel: number,
+  ownerCategory?: ContentCategoryId,
+): readonly InventoryItem[] {
+  if (!Number.isFinite(playerLevel) || playerLevel < 80) return [];
+  return ownerCategory === undefined
     ? drops
-    : [];
+    : drops.filter((item) => inventoryItemUsableForCategory(item, ownerCategory));
 }