Update chat_handler.py

chat_handler.py

@@ -17,10 +17,11 @@ from api_executor import call_api as execute_api
 from validation_engine import validate
 from session import session_store, Session
 from llm_interface import LLMInterface, SparkLLM, GPT4oLLM
+from config_provider import ConfigProvider
 
 # ─────────────────────────  CONFIG ───────────────────────── #
-# Lazy loading for config
-_cfg = None
+# Global config reference - startup'ta bir kez yüklenir
+cfg = ConfigProvider.get()
 
 def get_config():
     """Get or reload config"""