refactor(backend): drop redundant LoftError from Result return types

backend/src/web/mw_auth.rs

@@ -5,13 +5,14 @@ use axum::{
 };
 use tower_cookies::Cookies;
 
-use crate::{ctx::Ctx, error::LoftError, model::UserRepository, web::AUTH_TOKEN};
+use crate::{
+    ctx::Ctx,
+    error::{LoftError, Result},
+    model::UserRepository,
+    web::AUTH_TOKEN,
+};
 
-pub async fn mw_require_auth(
-    ctx: Result<Ctx, LoftError>,
-    req: Request,
-    next: Next,
-) -> Result<Response, LoftError> {
+pub async fn mw_require_auth(ctx: Result<Ctx>, req: Request, next: Next) -> Result<Response> {
     ctx?;
 
     Ok(next.run(req).await)
@@ -22,7 +23,7 @@ pub async fn mw_ctx_resolver(
     cookies: Cookies,
     mut req: Request,
     next: Next,
-) -> Result<Response, LoftError> {
+) -> Result<Response> {
     let auth_token = cookies.get(AUTH_TOKEN).map(|c| c.value().to_string());
 
     let result_ctx = match auth_token {
@@ -46,7 +47,7 @@ impl<S: Send + Sync> FromRequestParts<S> for Ctx {
     ) -> Result<Self, Self::Rejection> {
         parts
             .extensions
-            .get::<Result<Ctx, LoftError>>()
+            .get::<Result<Ctx>>()
             .ok_or(LoftError::AuthFailCtxNotInRequestExt)?
             .clone()
     }