fix: correct import paths and env mocking in group-sync tests

tests/unit/services/group-sync.test.ts

@@ -1,22 +1,15 @@
 import { describe, it, expect, beforeEach, mock, spyOn } from 'bun:test';
-import { GroupSyncService } from '../../src/services/group-sync';
-import { db } from '../../src/db';
+import { GroupSyncService } from '../../../src/services/group-sync';
+import { db } from '../../../src/db';
 
-// Mock environment variables directly since we can't find env.ts
-const env = {
-  WHATSAPP_COMMUNITY_ID: 'test-community',
-  EVOLUTION_API_URL: 'http://test-api',
-  EVOLUTION_API_INSTANCE: 'test-instance', 
-  EVOLUTION_API_KEY: 'test-key'
-};
-
-// Mock the environment variables
-const originalEnv = { ...env };
-const mockEnv = {
+// Mock process.env for testing
+const originalEnv = { ...process.env };
+process.env = {
   WHATSAPP_COMMUNITY_ID: 'test-community',
   EVOLUTION_API_URL: 'http://test-api',
   EVOLUTION_API_INSTANCE: 'test-instance',
-  EVOLUTION_API_KEY: 'test-key'
+  EVOLUTION_API_KEY: 'test-key',
+  ...process.env
 };
 
 // Mock fetch
@@ -37,7 +30,7 @@ describe('GroupSyncService', () => {
   });
 
   afterAll(() => {
-    Object.assign(env, originalEnv);
+    process.env = originalEnv;
     mockFetch.mockRestore();
   });