feat: add pricing checkout flow, MFA type fixes, and Wave 13 audit docs

- Pricing page: enhanced with checkout modal integration, plan
  comparison table, and subscription funnel
- Payment return page: new VNPay/MoMo callback handler
- Subscription components: new checkout-modal with payment method
  selection (VNPay, MoMo, ZaloPay)
- API modules: type-safe PII encryption, improved error handling in
  MFA/auth/payments/analytics/search/notifications modules
- Audit docs: comprehensive Wave 13 platform assessment, pricing
  audit, production readiness checklist
- Updated PROJECT_TRACKER with Wave 13 status

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

apps/api/src/modules/search/search.module.ts

@@ -1,7 +1,7 @@
 import { Module, type OnModuleInit } from '@nestjs/common';
 import { CqrsModule } from '@nestjs/cqrs';
 import { makeCounterProvider } from '@willsoto/nestjs-prometheus';
-import { type LoggerService } from '@modules/shared';
+import { LoggerService } from '@modules/shared';
 import { CreateSavedSearchHandler } from './application/commands/create-saved-search/create-saved-search.handler';
 import { DeleteSavedSearchHandler } from './application/commands/delete-saved-search/delete-saved-search.handler';
 import { ReindexAllHandler } from './application/commands/reindex-all/reindex-all.handler';