docs: add some comments on useful locations

crates/app/src/lib.rs

@@ -16,5 +16,6 @@ pub fn get_router(assets_path: &Path) -> axum::Router {
         .nest_service("/assets", ServeDir::new(assets_path))
         .merge(pages::get_routes())
         .fallback(fallback)
+        // The AutoVaryLayer is used to avoid cache issues with htmx (cf: https://github.com/robertwayne/axum-htmx?tab=readme-ov-file#auto-caching-management)
         .layer(AutoVaryLayer)
 }

crates/app/src/menu.rs

@@ -4,6 +4,9 @@ pub struct MenuItem {
     pub href: String,
 }
 
+/// Get the menu items
+/// This function is the central place to define the menu items
+/// It can be used directly in templates, for example in the `navbar` component to render the menu
 pub fn get_menu_items() -> Vec<MenuItem> {
     vec![
         MenuItem {