Fix traceback working_dir

 import webagt
 
 app = web.application(__name__, prefix="system")
-
-code_dir = pathlib.Path.home() / "code"
-meta_dir = code_dir / "meta"
-working_dir = code_dir / "working"
+working_dir = "/home/admin/app/lib/python3.10/site-packages/"
 
 
 def get_ip():

 
 @app.wrap
 def set_working_dir(handler, main_app):
+    """Expose the working dir (e.g. traceback contextualization)"""
     web.tx.host.working_dir = working_dir
     yield