Update app.js

app.js

@@ -1431,7 +1431,7 @@ app.get('/dataset/download', (req, res) => {
 
 app.post('/dataset/clear', (req, res) => {
     const count = _dataset.length;
-    _dataset =[];
+    _dataset =[]; 
     if (fs.existsSync(DATASET_PATH)) fs.unlinkSync(DATASET_PATH);
     log(`Dataset cleared — removed ${count} samples`, "OK");
     res.json({ cleared: count });