Update app_core.py

app_core.py

@@ -11,7 +11,7 @@ import os, json, subprocess, shutil, textwrap, tempfile
 from pathlib import Path
 from datetime import datetime
 
-_pw_flag = pathlib.Path("/tmp/.pw_chromium_installed")
+_pw_flag = Path("/tmp/.pw_chromium_installed")
 
 if not _pw_flag.exists():
     print("▶ Installing Playwright Chromium … (first-run only)")