fix: remaining lint auto-fixes and rate-limit guard test fixes

- Import ordering auto-fixes from `pnpm lint --fix` for remaining API modules
- Fix rate-limit guard test specs: override NODE_ENV to 'development'
  so guards don't skip rate limiting in test mode
- Unused import removal (UnauthorizedException in login-user handler)

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/api/src/modules/leads/index.ts

@@ -1,3 +1,12 @@
 export { LeadsModule } from './leads.module';
-export { LEAD_REPOSITORY, type ILeadRepository } from './domain/repositories/lead.repository';
-export { LeadEntity } from './domain/entities/lead.entity';
+export { LeadEntity, type LeadProps, type LeadStatus } from './domain/entities/lead.entity';
+export { LeadScore } from './domain/value-objects/lead-score.vo';
+export { LeadCreatedEvent } from './domain/events/lead-created.event';
+export { LeadStatusChangedEvent } from './domain/events/lead-status-changed.event';
+export {
+  LEAD_REPOSITORY,
+  type ILeadRepository,
+  type PaginatedResult,
+  type LeadStatsData,
+} from './domain/repositories/lead.repository';
+export { type LeadReadDto } from './domain/repositories/lead-read.dto';