Kratos 허용 return URL 생성 로직 보강

scripts/auth_config.sh

@@ -307,8 +307,24 @@ build_allowed_return_urls() {
     fi
   }
 
+  add_userfront_return_urls() {
+    local base="$1"
+    local normalized
+    normalized="$(canonicalize_url "$base")"
+    [[ -n "$normalized" ]] || return
+
+    add_allowed_with_slash_variant "$normalized"
+    add_allowed_url "${normalized}/ko"
+    add_allowed_url "${normalized}/ko/"
+    add_allowed_url "${normalized}/en"
+    add_allowed_url "${normalized}/en/"
+    add_allowed_url "${normalized}/auth/callback"
+    add_allowed_url "${normalized}/ko/auth/callback"
+    add_allowed_url "${normalized}/en/auth/callback"
+  }
+
   add_allowed_with_slash_variant "$KRATOS_UI_URL"
-  add_allowed_with_slash_variant "$USERFRONT_URL"
+  add_userfront_return_urls "$USERFRONT_URL"
 
   for url in "${ADMIN_CALLBACKS[@]}"; do
     add_allowed_url "$url"