fix: various fixes to make gpt-5 work better [LET-4138] (#4344)

* fix: patch gpt-5 compat

* feat: add verbosity level dropdown selector to llm config panel in ade

* fix: patch duplicated logic

* fix: make default verbosity None, just stage just publish

* fix: missing files

letta/llm_api/openai_client.py

@@ -47,7 +47,7 @@ def is_openai_reasoning_model(model: str) -> bool:
     """Utility function to check if the model is a 'reasoner'"""
 
     # NOTE: needs to be updated with new model releases
-    is_reasoning = model.startswith("o1") or model.startswith("o3") or model.startswith("o4")
+    is_reasoning = model.startswith("o1") or model.startswith("o3") or model.startswith("o4") or model.startswith("gpt-5")
     return is_reasoning