feat: Kubernetes 자동 배포 파이프라인 구축

- Dockerfile: Expo web export → nginx multi-stage 빌드
- nginx.conf: SPA fallback, gzip, health endpoint
- K8s manifests: namespace, deployment (2 replicas), service, ingress
- Traefik IngressRoute (선택적) 포함
- Gitea Actions workflow: push 시 빌드→Gitea Registry push→rollout restart
- DEPLOY.md: 초기 설정 가이드 (kubeconfig, secrets, DNS)

Domain: insurance.junggomoa.com

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.dockerignore

@@ -0,0 +1,14 @@
+node_modules
+.expo
+.expo-shared
+dist
+web-build
+.git
+.gitea
+.vscode
+.idea
+*.log
+.DS_Store
+.env*
+README.md
+DEPLOY.md