refactor: remove quark/web

crates/delta/src/routes/users/change_username.rs

@@ -1,9 +1,16 @@
-use crate::util::regex::RE_USERNAME;
+use once_cell::sync::Lazy;
+use regex::Regex;
 use revolt_quark::{authifier::models::Account, models::User, Database, Error, Result};
 use rocket::{serde::json::Json, State};
 use serde::{Deserialize, Serialize};
 use validator::Validate;
 
+/// Regex for valid usernames
+///
+/// Block zero width space
+/// Block lookalike characters
+pub static RE_USERNAME: Lazy<Regex> = Lazy::new(|| Regex::new(r"^(\p{L}|[\d_.-])+$").unwrap());
+
 /// # Username Information
 #[derive(Validate, Serialize, Deserialize, JsonSchema)]
 pub struct DataChangeUsername {