adjust thinking

agent_api.py

@@ -108,7 +108,8 @@ class LLMConfig:
         if google_api_key:
             self.gemini_llm = ChatGoogleGenerativeAI(
                 model=os.getenv("GEMINI_TOOL_MODEL", "gemini-3-flash-preview"),
-                api_key=google_api_key
+                api_key=google_api_key,
+                thinking_level="minimal"
             )
             logger.info("✅ LLMConfig initialized:")
             logger.info(f"   - OpenAI LLM: {os.getenv('LLM_MODEL', 'gpt-5-nano-2025-08-07')}")