feat: 허브 홈페이지 구축 및 URL 구조 개편 (2026-05)

- hub/ 신규 추가: cyanburu.com/ 허브 홈페이지 (에디토리얼+사이버펑크 디자인)
- hub/index.html: /portal/api/homepage/cards 동적 카드 로딩
- k8s/00-hub.yaml: hub 네임스페이스 + Deployment + Service
- k8s/13-ingress-hub.yaml: cyanburu.com/ → hub 라우팅
- k8s/08-ingress.yaml: cyanburu.com/ → cyanburu.com/portal 경로 변경
- backend/main.py: homepage_cards CRUD API 추가, root_path=/portal 설정
- frontend/index.html: API 경로 /portal/api 수정, 홈 카드 관리 탭 추가
- README.md: 2026-05 변경 이력 추가

k8s/08-ingress.yaml

@@ -4,24 +4,28 @@ metadata:
   name: web-portal-ingress
   namespace: web-portal
   annotations:
-    cert-manager.io/cluster-issuer: letsencrypt-prod
     nginx.ingress.kubernetes.io/ssl-redirect: "true"
-    nginx.ingress.kubernetes.io/proxy-read-timeout: "60"
-    nginx.ingress.kubernetes.io/proxy-connect-timeout: "10"
+    nginx.ingress.kubernetes.io/rewrite-target: /$2
+    nginx.ingress.kubernetes.io/proxy-body-size: "10m"
+    # Rate limiting (기존 유지)
+    nginx.ingress.kubernetes.io/limit-rps: "10"
+    cert-manager.io/cluster-issuer: letsencrypt-prod
 spec:
   ingressClassName: nginx
   tls:
-  - hosts:
-    - cyanburu.com
-    secretName: web-portal-tls
+    - hosts:
+        - cyanburu.com
+      secretName: cyanburu-tls
   rules:
-  - host: cyanburu.com
-    http:
-      paths:
-      - path: /
-        pathType: Prefix
-        backend:
-          service:
-            name: frontend-service
-            port:
-              number: 80
+    - host: cyanburu.com
+      http:
+        paths:
+          # /portal 경로 → web-portal 프론트엔드
+          # rewrite-target: /portal/foo → /foo 로 strip
+          - path: /portal(/|$)(.*)
+            pathType: ImplementationSpecific
+            backend:
+              service:
+                name: frontend-service
+                port:
+                  number: 80