FEAT(app): add per-application ingress management

- Added ingress.yaml for production environment
- Updated kustomization file to include ingress resource
- Migrated from centralized ingress management to per-app architecture

deploy/k8s/overlays/prod/ingress.yaml

@@ -0,0 +1,43 @@
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: mas-ingress
+  annotations:
+    nginx.ingress.kubernetes.io/ssl-redirect: "true"
+    cert-manager.io/cluster-issuer: "letsencrypt-prod"
+    # WebSocket 지원 (Chainlit UI에 필요)
+    nginx.ingress.kubernetes.io/websocket-services: "mas"
+    # 프록시 타임아웃 설정 (장시간 스트리밍 응답)
+    nginx.ingress.kubernetes.io/proxy-connect-timeout: "3600"
+    nginx.ingress.kubernetes.io/proxy-send-timeout: "3600"
+    nginx.ingress.kubernetes.io/proxy-read-timeout: "3600"
+    # 프록시 버퍼링 비활성화 (스트리밍 응답)
+    nginx.ingress.kubernetes.io/proxy-buffering: "off"
+spec:
+  ingressClassName: haproxy
+  tls:
+  - hosts:
+    - mas0213.kro.kr
+    - www.mas0213.kro.kr
+    secretName: mas-tls
+  rules:
+  - host: mas0213.kro.kr
+    http:
+      paths:
+      - path: /
+        pathType: Prefix
+        backend:
+          service:
+            name: mas
+            port:
+              number: 8000
+  - host: www.mas0213.kro.kr
+    http:
+      paths:
+      - path: /
+        pathType: Prefix
+        backend:
+          service:
+            name: mas
+            port:
+              number: 8000