feat(ops): add global test whitelist and exclude test accounts from settlement

Unify product/store visibility on HQ whitelist, mark isTest snapshots, and fix SUPER_ADMIN access for the new module.

server/dukang-api/src/common/test-whitelist/test-whitelist.module.ts

@@ -0,0 +1,9 @@
+import { Global, Module } from '@nestjs/common';
+import { TestWhitelistService } from './test-whitelist.service';
+
+@Global()
+@Module({
+  providers: [TestWhitelistService],
+  exports: [TestWhitelistService],
+})
+export class TestWhitelistModule {}