Analytics Service context-path 설정 및 Controller 경로 최적화

- context-path 추가: /api/v1/analytics
- Swagger UI 경로를 기본값으로 수정 (/swagger-ui.html)
- 모든 Controller의 @RequestMapping에서 /api/v1 제거
  - Events 관련 Controller 4개: /api/v1/events → /events
  - Users 관련 Controller 4개: /api/v1/users → /users
  - DebugController: /api/debug → /debug

이제 Ingress를 통한 접근 및 Swagger UI가 정상 작동합니다.
- Swagger UI: /api/v1/analytics/swagger-ui/index.html
- API: /api/v1/analytics/events/{eventId}/analytics

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

analytics-service/src/main/resources/application.yml

@@ -76,6 +76,7 @@ spring:
 server:
   port: ${SERVER_PORT:8086}
   servlet:
+    context-path: /api/v1/analytics
     encoding:
       charset: UTF-8
       enabled: true
@@ -117,7 +118,7 @@ springdoc:
   api-docs:
     path: /v3/api-docs
   swagger-ui:
-    path: /api/v1/analytics/swagger-ui.html
+    path: /swagger-ui.html
     tags-sorter: alpha
     operations-sorter: alpha
   show-actuator: false