Update reasoning_level

agent_api.py

@@ -109,7 +109,7 @@ class LLMConfig:
             self.gemini_llm = ChatGoogleGenerativeAI(
                 model=os.getenv("GEMINI_TOOL_MODEL", "gemini-3-flash-preview"),
                 api_key=google_api_key,
-                thinking_level="minimal"
+                thinking_level="low"
             )
             logger.info("✅ LLMConfig initialized:")
             logger.info(f"   - OpenAI LLM: {os.getenv('LLM_MODEL', 'gpt-5-nano-2025-08-07')}")