refactor: clean up unused imports and dead code across commands, services, and tests.

src/modules/inventory/inventory.service.test.ts

@@ -1,6 +1,6 @@
 import { describe, it, expect, mock, beforeEach, afterEach, spyOn } from "bun:test";
 import { inventoryService } from "./inventory.service";
-import { inventory, items, userTimers } from "@/db/schema";
+import { inventory, userTimers } from "@/db/schema";
 // Helper to mock resolved value for spyOn
 import { economyService } from "@/modules/economy/economy.service";
 import { levelingService } from "@/modules/leveling/leveling.service";