fix: reset database sequences in group sync tests

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

@@ -10,7 +10,9 @@ describe('GroupSyncService', () => {
   let fetchMock: any;
 
   beforeEach(() => {
+    // Clear and reset test data
     db.exec('DELETE FROM groups');
+    db.exec('DELETE FROM sqlite_sequence WHERE name="groups"');
     GroupSyncService['lastSyncAttempt'] = 0;
     
     // Setup mock fetch