refactor: migration Clean Architecture — module commands avec render et watch

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src-tauri/src/application/file_service.rs

@@ -1,7 +1,6 @@
 use crate::infrastructure::file_repository;
 use std::path::Path;
 
-#[allow(dead_code)]
 pub fn list_markdown_files(dir: &str) -> Result<Vec<String>, String> {
     let path = Path::new(dir);
     if !path.is_dir() {