테넌트 서브도메인 존재 검증 Guard 추가

- 백엔드 TenantController: GET /api/tenant/check?subdomain=xxx
  (메타 DB 강제 라우팅 + CompanyResolver 로 존재 여부 반환)
- frontend/lib/tenant/subdomain.ts: 호스트 파싱 + 예약어(solution/www/admin 등) 제외
- TenantGuard 클라이언트 컴포넌트: layout.tsx 에서 wrap,
  sessionStorage 로 같은 서브도메인 재체크 방지
- /tenant-not-found 페이지: v5 solid+glow 스타일

등록되지 않은 서브도메인 접속 시 즉시 /tenant-not-found 로 리다이렉트.

notes/gbpark/2026-04-24-traefik-wildcard/db-rename.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+set -e
+
+echo "==== [1] Terminating all vexplor sessions ===="
+docker exec -i invyone-db psql -U postgres -c "SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE datname LIKE '%vexplor%' AND pid <> pg_backend_pid();" 2>&1 | tail -3
+
+sleep 2
+
+echo ""
+echo "==== [2] Dropping 6 test databases ===="
+for db in newtest5_vexplor newtest6_vexplor test002_vexplor test07_vexplor test08_vexplor wace_vexplor; do
+  echo "  - Dropping $db"
+  docker exec -i invyone-db psql -U postgres -c "DROP DATABASE IF EXISTS \"$db\";" 2>&1
+done
+
+echo ""
+echo "==== [3] Deleting 8 test company records ===="
+docker exec -i invyone-db psql -U postgres -d vexplor -c "DELETE FROM COMPANY_MNG WHERE COMPANY_CODE IN ('NEWTEST03','NEWTEST05','NEWTEST06','TEST07','TEST08','TEST002','WACE11','COMPANY_10');" 2>&1
+
+echo ""
+echo "==== [4] RENAME vexplor -> invyone ===="
+docker exec -i invyone-db psql -U postgres -c "ALTER DATABASE vexplor RENAME TO invyone;" 2>&1
+
+echo ""
+echo "==== [5] Final DB list ===="
+docker exec -i invyone-db psql -U postgres -l | grep -v template | grep -v postgres
+
+echo ""
+echo "==== [6] Company count in invyone ===="
+docker exec -i invyone-db psql -U postgres -d invyone -tAc "SELECT COUNT(*) || ' companies in COMPANY_MNG' FROM COMPANY_MNG;"
+
+echo ""
+echo "==== [7] Scale backend back to 1 ===="
+KUBECONFIG=/home/chpark/.kube/config kubectl scale deployment backend-spring --replicas=1 -n invyone
+
+echo ""
+echo "==== DONE ===="