=== auth 의 400 본문 ===
HTTP/2 200 
server: nginx/1.22.1
date: Thu, 17 Sep 2026 07:47:56 GMT
content-type: application/json;charset=UTF-8
content-length: 602
cache-control: no-cache
referrer-policy: no-referrer
strict-transport-security: max-age=31536000; includeSubDomains
x-content-type-options: nosniff
x-frame-options: SAMEORIGIN
x-robots-tag: none


=== 다른 경로도 400 인가 ===
/                                302
/realms/master                   200
/realms/keycloak-patterns        200
/admin/                          302

=== 엣지에서 Traefik 에 Host 를 주고 직접 (대조군) ===
http  200
http+XFP-https  200
