fix: close sms scheduling and billing gaps

api/src/app.module.ts

@@ -4,6 +4,7 @@ import { AuditModule } from './audit/audit.module';
 import { AuthModule } from './auth/auth.module';
 import { BillingModule } from './billing/billing.module';
 import { ChannelsModule } from './channels/channels.module';
+import { CertificationModule } from './certification/certification.module';
 import { DictionariesModule } from './dictionaries/dictionaries.module';
 import { FilesModule } from './files/files.module';
 import { HealthController } from './health.controller';
@@ -29,6 +30,7 @@ import { UsersModule } from './users/users.module';
     FilesModule,
     DictionariesModule,
     BillingModule,
+    CertificationModule,
     SmsConfigModule,
     ChannelsModule,
     RiskReviewModule,