style(tools, llm): 统一导入顺序与代码格式

src/llm/compact.rs

@@ -73,10 +73,7 @@ impl CompactState {
 
 /// 粗略估计消息列表的 token 数（基于字符数，4 字符 ≈ 1 token）。
 pub fn estimate_message_tokens(messages: &[Message]) -> u32 {
-    messages
-        .iter()
-        .map(estimate_single_message_tokens)
-        .sum()
+    messages.iter().map(estimate_single_message_tokens).sum()
 }
 
 fn estimate_single_message_tokens(msg: &Message) -> u32 {
@@ -99,9 +96,7 @@ fn estimate_block_tokens(block: &ContentBlock) -> u32 {
     match block {
         ContentBlock::Text { text } => estimate_text_tokens(text),
         ContentBlock::Thinking { text, .. } => estimate_text_tokens(text),
-        ContentBlock::ToolUse { input, .. } => {
-            estimate_text_tokens(&input.to_string())
-        }
+        ContentBlock::ToolUse { input, .. } => estimate_text_tokens(&input.to_string()),
         ContentBlock::ToolResult { content, .. } => estimate_content_blocks_tokens(content),
         // ponytail: Image / Audio / File / Extension 在 IR 中固定估算。
         // 无文本的视觉/音频 block 用兜底估算，避免 token 计数膨胀。
@@ -148,14 +143,25 @@ pub fn microcompact(messages: &mut [Message], keep_recent: usize) -> u32 {
 
     // 第一遍：计算可释放 token（仅非错误 ToolResult）
     for msg in &messages[..prune_start] {
-        if matches!(msg, Message::ToolResult { is_error: false, .. }) {
+        if matches!(
+            msg,
+            Message::ToolResult {
+                is_error: false,
+                ..
+            }
+        ) {
             freed_tokens += estimate_single_message_tokens(msg);
         }
     }
 
     // 第二遍：替换内容（仅非错误 ToolResult）
     for msg in &mut messages[..prune_start] {
-        if let Message::ToolResult { content, is_error: false, .. } = msg {
+        if let Message::ToolResult {
+            content,
+            is_error: false,
+            ..
+        } = msg
+        {
             *content = vec![ContentBlock::Text {
                 text: "[pruned]".to_string(),
             }];
@@ -177,13 +183,15 @@ mod tests {
     fn estimate_message_tokens_handles_all_variants() {
         let messages = vec![
             Message::System {
-                content: vec![ContentBlock::Text {
-                    text: "sys".into(),
-                }],
+                content: vec![ContentBlock::Text { text: "sys".into() }],
             },
             Message::user_text("hi"),
             Message::assistant("ans"),
-            Message::user_image("b64", "image/png", crate::llm::types::shared::ImageDetail::Auto),
+            Message::user_image(
+                "b64",
+                "image/png",
+                crate::llm::types::shared::ImageDetail::Auto,
+            ),
             Message::tool_result("call_1", "tool res", false),
         ];
         let tokens = estimate_message_tokens(&messages);
@@ -205,7 +213,10 @@ mod tests {
         assert!(freed > 0);
         assert_eq!(messages.len(), before_len); // 只改内容，不删消息
         // 索引 1 是被压缩的 ToolResult
-        if let Message::ToolResult { content, is_error, .. } = &messages[1] {
+        if let Message::ToolResult {
+            content, is_error, ..
+        } = &messages[1]
+        {
             assert_eq!(content.len(), 1);
             assert!(matches!(&content[0], ContentBlock::Text { text } if text == "[pruned]"));
             assert!(!is_error);
@@ -228,9 +239,14 @@ mod tests {
         assert_eq!(freed, 0); // 错误 ToolResult 不计入
         assert_eq!(messages.len(), before_len);
         // 错误信息保留完整
-        if let Message::ToolResult { content, is_error, .. } = &messages[1] {
+        if let Message::ToolResult {
+            content, is_error, ..
+        } = &messages[1]
+        {
             assert!(is_error);
-            assert!(matches!(&content[0], ContentBlock::Text { text } if text.contains("backend down")));
+            assert!(
+                matches!(&content[0], ContentBlock::Text { text } if text.contains("backend down"))
+            );
         } else {
             panic!("expected ToolResult at index 1");
         }