Docs, ticks, working app

src/api.rs

@@ -462,11 +462,13 @@ async fn update_settings(
 }
 
 /// Maps a `ProfileError` to a response status/message: `NotFound` -> 404,
-/// `DuplicateName` -> 400, `Io` -> 500. Mirrors `css_error_response` above.
+/// `DuplicateName`/`CannotDeleteDefault` -> 400, `Io` -> 500. Mirrors
+/// `css_error_response` above.
 fn profile_error_response(err: ProfileError) -> axum::response::Response {
     match err {
         ProfileError::NotFound => (StatusCode::NOT_FOUND, err.to_string()).into_response(),
         ProfileError::DuplicateName => (StatusCode::BAD_REQUEST, err.to_string()).into_response(),
+        ProfileError::CannotDeleteDefault => (StatusCode::BAD_REQUEST, err.to_string()).into_response(),
         ProfileError::Io(_) => (StatusCode::INTERNAL_SERVER_ERROR, err.to_string()).into_response(),
     }
 }