=== PHP 진단 ===
PHP 버전: 7.4.3-4ubuntu2.29
curl 확장: OK
JSON 확장: OK
JSON_UNESCAPED_UNICODE: OK (PHP 5.4+)
익명함수(closure): OK

=== DB 연결 ===
connect: OK
ANTHROPIC_API_KEY: SET (len=108)

=== 완료 ===