chore(fmt): add legacy stubs and strip trailing whitespace to unblock cargo fmt

src/boxes/file/mod.rs

@@ -2,10 +2,10 @@
 // Nyashの箱システムによるファイル入出力を提供します。
 // 参考: 既存Boxの設計思想
 
-use crate::box_trait::{NyashBox, StringBox, BoolBox, BoxCore, BoxBase};
+use crate::box_trait::{BoolBox, BoxBase, BoxCore, NyashBox, StringBox};
 use std::any::Any;
 use std::fs::{File, OpenOptions};
-use std::io::{Read, Write, Result};
+use std::io::{Read, Result, Write};
 use std::sync::RwLock;
 
 #[derive(Debug)]
@@ -38,8 +38,12 @@ impl FileBox {
             Err(_) => {
                 // Fallback: create with empty file handle - only for dispatch
                 use std::fs::OpenOptions;
-                let file = OpenOptions::new().create(true).write(true).read(true)
-                    .open("/dev/null").unwrap_or_else(|_| File::open("/dev/null").unwrap());
+                let file = OpenOptions::new()
+                    .create(true)
+                    .write(true)
+                    .read(true)
+                    .open("/dev/null")
+                    .unwrap_or_else(|_| File::open("/dev/null").unwrap());
                 FileBox {
                     file: RwLock::new(file),
                     path: String::new(),
@@ -48,28 +52,32 @@ impl FileBox {
             }
         }
     }
-    
+
     pub fn open(path: &str) -> Result<Self> {
-        let file = OpenOptions::new().read(true).write(true).create(true).open(path)?;
-        Ok(FileBox { 
+        let file = OpenOptions::new()
+            .read(true)
+            .write(true)
+            .create(true)
+            .open(path)?;
+        Ok(FileBox {
             file: RwLock::new(file),
             path: path.to_string(),
             base: BoxBase::new(),
         })
     }
-    
+
     pub fn read_to_string(&self) -> Result<String> {
         let mut file = self.file.write().unwrap();
         let mut s = String::new();
         file.read_to_string(&mut s)?;
         Ok(s)
     }
-    
+
     pub fn write_all(&self, buf: &[u8]) -> Result<()> {
         let mut file = self.file.write().unwrap();
         file.write_all(buf)
     }
-    
+
     /// ファイルの内容を読み取る
     pub fn read(&self) -> Box<dyn NyashBox> {
         match self.read_to_string() {
@@ -77,7 +85,7 @@ impl FileBox {
             Err(e) => Box::new(StringBox::new(&format!("Error reading file: {}", e))),
         }
     }
-    
+
     /// ファイルに内容を書き込む
     pub fn write(&self, content: Box<dyn NyashBox>) -> Box<dyn NyashBox> {
         let content_str = content.to_string_box().value;
@@ -86,13 +94,13 @@ impl FileBox {
             Err(e) => Box::new(StringBox::new(&format!("Error writing file: {}", e))),
         }
     }
-    
+
     /// ファイルが存在するかチェック
     pub fn exists(&self) -> Box<dyn NyashBox> {
         use std::path::Path;
         Box::new(BoolBox::new(Path::new(&self.path).exists()))
     }
-    
+
     /// ファイルを削除
     pub fn delete(&self) -> Box<dyn NyashBox> {
         match std::fs::remove_file(&self.path) {
@@ -100,7 +108,7 @@ impl FileBox {
             Err(e) => Box::new(StringBox::new(&format!("Error deleting file: {}", e))),
         }
     }
-    
+
     /// ファイルをコピー
     pub fn copy(&self, dest: &str) -> Box<dyn NyashBox> {
         match std::fs::copy(&self.path, dest) {
@@ -114,19 +122,19 @@ impl BoxCore for FileBox {
     fn box_id(&self) -> u64 {
         self.base.id
     }
-    
+
     fn parent_type_id(&self) -> Option<std::any::TypeId> {
         self.base.parent_type_id
     }
-    
+
     fn fmt_box(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
         write!(f, "FileBox({})", self.path)
     }
-    
+
     fn as_any(&self) -> &dyn Any {
         self
     }
-    
+
     fn as_any_mut(&mut self) -> &mut dyn Any {
         self
     }
@@ -137,10 +145,10 @@ impl NyashBox for FileBox {
         // Note: Cannot truly clone a File handle, so create a new one to the same path
         match FileBox::open(&self.path) {
             Ok(new_file) => Box::new(new_file),
-            Err(_) => Box::new(crate::box_trait::VoidBox::new())  // Return void on error
+            Err(_) => Box::new(crate::box_trait::VoidBox::new()), // Return void on error
         }
     }
-    
+
     /// 仮実装: clone_boxと同じ（後で修正）
     fn share_box(&self) -> Box<dyn NyashBox> {
         self.clone_box()
@@ -150,12 +158,10 @@ impl NyashBox for FileBox {
         StringBox::new(format!("FileBox({})", self.path))
     }
 
-
     fn type_name(&self) -> &'static str {
         "FileBox"
     }
 
-
     fn equals(&self, other: &dyn NyashBox) -> BoolBox {
         if let Some(other_file) = other.as_any().downcast_ref::<FileBox>() {
             BoolBox::new(self.path == other_file.path)