Update app.py

app.py

@@ -9,6 +9,30 @@ from pytube import YouTube
 from pathlib import Path # <-- Add this import at the top of your file with the other imports
 import re
 
+# --- START: Filesystem Write Test ---
+import os
+import datetime
+
+TEST_DIR = "test_directory"
+try:
+    print("--- RUNNING FILESYSTEM WRITE TEST ---")
+    if not os.path.exists(TEST_DIR):
+        print(f"Attempting to create '{TEST_DIR}'...")
+        os.makedirs(TEST_DIR)
+        print(f"'{TEST_DIR}' created successfully.")
+    else:
+        print(f"'{TEST_DIR}' already exists.")
+
+    with open(os.path.join(TEST_DIR, "test_file.txt"), "w") as f:
+        f.write(f"File write successful at: {datetime.datetime.now()}")
+    print("Test file written successfully.")
+    print("--- FILESYSTEM WRITE TEST PASSED ---")
+
+except Exception as e:
+    print(f"--- !!! FILESYSTEM WRITE TEST FAILED !!! ---")
+    print(f"Error: {e}")
+# --- END: Filesystem Write Test ---
+
 
 # --- Agent Imports & Safe Fallbacks ---
 try: