feat: 移除日志中的响应内容和模型信息，优化工具调用的日志记录

src/agent/agent_loop.rs

@@ -763,8 +763,6 @@ impl AgentLoop {
                 iteration,
                 response_len = response.content.len(),
                 tool_calls_len = response.tool_calls.len(),
-                content = %response.content,
-                model = %response.model,
                 "LLM response received"
             );
 
@@ -784,17 +782,9 @@ impl AgentLoop {
             }
 
             // Execute tool calls
-            let tool_calls_json = serde_json::to_string_pretty(&response.tool_calls)
-                .unwrap_or_else(|_| response.tool_calls.iter()
-                    .map(|tc| format!("{}({})", tc.name, tc.arguments))
-                    .collect::<Vec<_>>()
-                    .join(", "));
             tracing::info!(
                 iteration,
                 count = response.tool_calls.len(),
-                content = %response.content,
-                tool_calls = %tool_calls_json,
-                model = %response.model,
                 "Tool calls detected, executing tools"
             );