style: 格式化代码并优化导入顺序

src/llm/thinking.rs

@@ -1,5 +1,5 @@
-use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::Arc;
+use std::sync::atomic::{AtomicBool, Ordering};
 
 /// 统一的思考状态管理器，用于管理模型思考状态的显示与隐藏
 pub struct ThinkingStateManager {
@@ -115,10 +115,9 @@ mod tests {
         let events: Arc<Mutex<Vec<String>>> = Arc::new(Mutex::new(Vec::new()));
         let events_clone = events.clone();
 
-        let manager = ThinkingStateManager::new()
-            .on_thinking_start(move || {
-                events_clone.lock().unwrap().push("start".to_string());
-            });
+        let manager = ThinkingStateManager::new().on_thinking_start(move || {
+            events_clone.lock().unwrap().push("start".to_string());
+        });
 
         let events_clone2 = events.clone();
         let manager = manager.on_thinking_end(move || {