fix: actually set the correct regex

set_version.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
-export version=0.5.3-patch.2
+export version=0.5.3-2
 echo "pub const VERSION: &str = \"${version}\";" > src/version.rs

src/routes/bots/create.rs

@@ -45,7 +45,7 @@ pub async fn create_bot(db: &Db, user: User, info: Json<DataCreateBot>) -> Resul
     let id = Ulid::new().to_string();
     let bot_user = User {
         id: id.clone(),
-        username: info.name,
+        username: info.name.trim().to_string(),
         bot: Some(BotInformation {
             owner: user.id.clone(),
         }),

src/routes/users/change_username.rs

@@ -28,6 +28,9 @@ pub async fn req(
     data: Json<DataChangeUsername>,
 ) -> Result<Json<User>> {
     let data = data.into_inner();
+    data.validate()
+        .map_err(|error| Error::FailedValidation { error })?;
+
     account
         .verify_password(&data.password)
         .map_err(|_| Error::InvalidCredentials)?;

src/util/regex.rs

@@ -1,4 +1,9 @@
 use once_cell::sync::Lazy;
 use regex::Regex;
 
-pub static RE_USERNAME: Lazy<Regex> = Lazy::new(|| Regex::new(r"^[a-zA-Z0-9_.]+$").unwrap());
+/// Regex for valid usernames
+///
+/// Block zero width space
+/// Block lookalike characters
+pub static RE_USERNAME: Lazy<Regex> =
+    Lazy::new(|| Regex::new(r"^[^\u200BА-Яа-яΑ-Ωα-ω]+$").unwrap());

src/version.rs

@@ -1 +1 @@
-pub const VERSION: &str = "0.5.3-patch.2";
+pub const VERSION: &str = "0.5.3-2";