feat(GOV-009): 建立后端契约与健康检查

server/libs/infrastructure/src/disabled-health.client.ts

@@ -0,0 +1,17 @@
+import type { DependencyHealthDto } from '../../http-contracts/src/health.dto';
+
+export class DisabledHealthClient {
+  constructor(private readonly detail: string) {}
+
+  async check(): Promise<DependencyHealthDto> {
+    return { status: 'disabled', detail: this.detail };
+  }
+
+  async close(): Promise<void> {
+    return Promise.resolve();
+  }
+
+  async onModuleDestroy(): Promise<void> {
+    await this.close();
+  }
+}