chore: Enhance database debugging setup and expand test mocks for Drizzle queries and Discord API interactions.

shared/modules/inventory/inventory.service.test.ts

@@ -48,6 +48,8 @@ mock.module("@shared/db/DrizzleClient", () => {
             inventory: { findFirst: mockFindFirst, findMany: mockFindMany },
             items: { findFirst: mockFindFirst },
             userTimers: { findFirst: mockFindFirst },
+            userQuests: { findMany: mockFindMany, findFirst: mockFindFirst },
+            quests: { findMany: mockFindMany },
         },
         insert: mockInsert,
         update: mockUpdate,
@@ -79,6 +81,7 @@ describe("inventoryService", () => {
     beforeEach(() => {
         mockFindFirst.mockReset();
         mockFindMany.mockReset();
+        mockFindMany.mockResolvedValue([]);
         mockInsert.mockClear();
         mockUpdate.mockClear();
         mockDelete.mockClear();