fixed parsing admin setup

backend/src/services/databaseService.ts

@@ -32,11 +32,11 @@ class Database {
     });
   }
 
-  async run(sql: string, params: any[] = []): Promise<void> {
+  async run(sql: string, params: any[] = []): Promise<{ lastID?: number }> {
     return new Promise((resolve, reject) => {
-      this.db.run(sql, params, (err) => {
+      this.db.run(sql, params, function(err) {
         if (err) reject(err);
-        else resolve();
+        else resolve({ lastID: this.lastID });
       });
     });
   }