fix

src/controller/middleware/rate_limiting_middleware.rs

@@ -29,7 +29,7 @@ pub async fn rate_limiting_middleware(
         let mut entry = state
             .rate_limit
             .entry(client_ip)
-            .or_insert_with(|| crate::state::TokenBucket::new());
+            .or_insert_with(crate::state::TokenBucket::new);
         entry.value_mut().take()
     };
 

src/db/repository/user_repository.rs

@@ -1,4 +1,4 @@
-use sqlx::{Executor, PgPool, Postgres, types::Uuid};
+use sqlx::{Executor, Postgres, types::Uuid};
 
 use crate::{db::model::user::User, errors::AppError};
 

src/service/auth_service.rs

@@ -59,7 +59,10 @@ pub async fn register(
 
     let mut tx = state.db.begin().await?;
 
-    if let Some(_) = user_repository::get_user_by_email(&mut *tx, &req.email).await? {
+    if user_repository::get_user_by_email(&mut *tx, &req.email)
+        .await?
+        .is_some()
+    {
         tracing::warn!(email = %req.email, "Registration failed: email already exists");
         return Err(AppError::Validation("bad request".to_string()));
     }

src/utils/refresh_token.rs

@@ -6,7 +6,7 @@ pub fn generate_refresh_token() -> (String, String) {
     let mut thread_rng = rand::rng();
     thread_rng.fill_bytes(&mut bytes);
 
-    let plain = hex::encode(&bytes); // 64 hex chars for user
+    let plain = hex::encode(bytes); // 64 hex chars for user
     let hash = {
         // SHA-256 for DB storage
         let mut hasher = Sha256::new();