feat(program-settings): expose tenant settings APIs and merge PATCH by key

Sold apps can read settings from /get_settings; Super Admin saves only changed keys so huge runtime logs are not sent in the body.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/sms/sms.module.ts

@@ -10,6 +10,6 @@ import { SmsService } from './sms.service';
   imports: [NotificationsModule, AuthModule],
   controllers: [SmsController, RemoteSmsController],
   providers: [SmsService, RemoteSmsAuthGuard],
-  exports: [SmsService],
+  exports: [SmsService, RemoteSmsAuthGuard],
 })
 export class SmsModule {}