fix(docker-compose): 统一 backup-service 和 mpc-service 健康检查

backup-service:
- docker-compose.yml: curl -> wget (与 Dockerfile 一致)

mpc-service:
- docker-compose.yml: curl -> node HTTP (与 Dockerfile 一致)

修复 docker-compose healthcheck 覆盖 Dockerfile HEALTHCHECK 导致的不一致

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

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

backend/services/docker-compose.yml

@@ -198,7 +198,7 @@ services:
       postgres:
         condition: service_healthy
     healthcheck:
-      test: ["CMD", "curl", "-f", "http://localhost:3002/health"]
+      test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:3002/health"]
       interval: 30s
       timeout: 3s
       retries: 3
@@ -345,7 +345,7 @@ services:
       kafka:
         condition: service_started
     healthcheck:
-      test: ["CMD", "curl", "-f", "http://localhost:3006/api/v1/health"]
+      test: ["CMD", "node", "-e", "require('http').get('http://localhost:3006/api/v1/health', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})"]
       interval: 30s
       timeout: 3s
       retries: 3