feat: camelCase JSON responses, isFollowedByViewer, customCss, GET /users/me/following-list

crates/presentation/src/handlers/auth.rs

@@ -14,7 +14,9 @@ pub fn to_user_response(u: &domain::models::user::User) -> UserResponse {
         bio: u.bio.clone(),
         avatar_url: u.avatar_url.clone(),
         header_url: u.header_url.clone(),
+        custom_css: u.custom_css.clone(),
         local: u.local,
+        is_followed_by_viewer: false,
         created_at: u.created_at,
     }
 }