feat: Implement interactive quest command allowing users to view active/available quests and accept new ones.

shared/modules/quest/quest.service.test.ts

@@ -33,6 +33,7 @@ mock.module("@shared/db/DrizzleClient", () => {
     const createMockTx = () => ({
         query: {
             userQuests: { findFirst: mockFindFirst, findMany: mockFindMany },
+            quests: { findMany: mockFindMany },
         },
         insert: mockInsert,
         update: mockUpdate,
@@ -149,6 +150,31 @@ describe("questService", () => {
         });
     });
 
+    describe("getAvailableQuests", () => {
+        it("should return quests not yet accepted by user", async () => {
+            // First call to findMany (userQuests) returns accepted quest IDs
+            // Second call to findMany (quests) returns available quests
+            mockFindMany
+                .mockResolvedValueOnce([{ questId: 1 }]) // userQuests
+                .mockResolvedValueOnce([{ id: 2, name: "New Quest" }]); // quests
+
+            const result = await questService.getAvailableQuests("1");
+
+            expect(result).toEqual([{ id: 2, name: "New Quest" }] as any);
+            expect(mockFindMany).toHaveBeenCalledTimes(2);
+        });
+
+        it("should return all quests if user has no assigned quests", async () => {
+            mockFindMany
+                .mockResolvedValueOnce([]) // userQuests
+                .mockResolvedValueOnce([{ id: 1 }, { id: 2 }]); // quests
+
+            const result = await questService.getAvailableQuests("1");
+
+            expect(result).toEqual([{ id: 1 }, { id: 2 }] as any);
+        });
+    });
+
     describe("handleEvent", () => {
         it("should progress a quest with sub-events", async () => {
             const mockUserQuest = {