fix gemini model

connections.py

@@ -46,7 +46,7 @@ def initialize_connections():
             raise ValueError("GEMINI_API_KEY is missing.")
         
         genai.configure(api_key=config.GEMINI_API_KEY)
-        llm_model = genai.GenerativeModel('gemini-1.5-flash', generation_config=genai.types.GenerationConfig(temperature=0))
+        llm_model = genai.GenerativeModel('gemini-2.5-flash', generation_config=genai.types.GenerationConfig(temperature=0))
         print(f"✅ LLM Model '{llm_model.model_name}' initialized.")
 
         print("✅ System Initialized Successfully.")