Update agent.py

agent.py

@@ -30,6 +30,7 @@ llm = ChatGoogleGenerativeAI(
 # 2 ── ERROR-WRAPPER  (garantiert "ERROR:"-String statt Exception)
 # ----------------------------------------------------------------------
 def error_guard(fn):
+    @functools.wraps(fn)          # ➜ übernimmt __doc__, __name__, …
     def wrapper(*args, **kwargs):
         try:
             return fn(*args, **kwargs)