actually enable the tools

agent.py

@@ -236,9 +236,12 @@ def view_xlsx_file(url: str) -> str:
 
 # agent toolkit
 tools = [
-    execute_python, get_youtube_transcript,
-    reverse_string, search_web, transcribe_audio,
-    view_py_file, view_xlsx_file
+    execute_python,
+    get_youtube_transcript,
+    reverse_string,
+    search_web, search_wikipedia,
+    transcribe_audio,
+    view_png_file, view_py_file, view_xlsx_file
 ]
 
 # --- LangGraph ---