feat: add create and delete file/folder functionality to editor

- Add Tauri backend commands: create_file, create_directory, delete_file, delete_directory
- Add editor store functions for create/delete with auto-refresh
- Add FileContextMenu component with right-click support
- Add InputDialog component for file/folder name input
- Add ConfirmDialog component for delete confirmation
- Add Ctrl+N keyboard shortcut for new file
- Update keyboard shortcuts modal with new shortcuts
- Auto-close tabs when their files are deleted
- Auto-refresh file tree after create/delete operations

src-tauri/src/commands.rs

@@ -463,6 +463,78 @@ pub async fn write_file_content(path: String, content: String) -> Result<(), Str
         .map_err(|e| format!("Failed to write file: {}", e))
 }
 
+#[tauri::command]
+pub async fn create_file(path: String) -> Result<(), String> {
+    use std::fs::File;
+    use std::path::Path;
+
+    let file_path = Path::new(&path);
+
+    if file_path.exists() {
+        return Err("File already exists".to_string());
+    }
+
+    File::create(file_path).map_err(|e| format!("Failed to create file: {}", e))?;
+
+    Ok(())
+}
+
+#[tauri::command]
+pub async fn create_directory(path: String) -> Result<(), String> {
+    use std::fs;
+    use std::path::Path;
+
+    let dir_path = Path::new(&path);
+
+    if dir_path.exists() {
+        return Err("Directory already exists".to_string());
+    }
+
+    fs::create_dir_all(dir_path).map_err(|e| format!("Failed to create directory: {}", e))?;
+
+    Ok(())
+}
+
+#[tauri::command]
+pub async fn delete_file(path: String) -> Result<(), String> {
+    use std::fs;
+    use std::path::Path;
+
+    let file_path = Path::new(&path);
+
+    if !file_path.exists() {
+        return Err("File does not exist".to_string());
+    }
+
+    if file_path.is_dir() {
+        return Err("Path is a directory, use delete_directory instead".to_string());
+    }
+
+    fs::remove_file(file_path).map_err(|e| format!("Failed to delete file: {}", e))?;
+
+    Ok(())
+}
+
+#[tauri::command]
+pub async fn delete_directory(path: String) -> Result<(), String> {
+    use std::fs;
+    use std::path::Path;
+
+    let dir_path = Path::new(&path);
+
+    if !dir_path.exists() {
+        return Err("Directory does not exist".to_string());
+    }
+
+    if !dir_path.is_dir() {
+        return Err("Path is not a directory".to_string());
+    }
+
+    fs::remove_dir_all(dir_path).map_err(|e| format!("Failed to delete directory: {}", e))?;
+
+    Ok(())
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;

src-tauri/src/lib.rs

@@ -154,6 +154,10 @@ pub fn run() {
             list_directory,
             read_file_content,
             write_file_content,
+            create_file,
+            create_directory,
+            delete_file,
+            delete_directory,
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");