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/infrastructure/services/typesense-client.service.ts

@@ -1,6 +1,6 @@
 import { Injectable, type OnModuleInit } from '@nestjs/common';
 import { Client as TypesenseClient } from 'typesense';
-import { type LoggerService } from '@modules/shared';
+import { LoggerService } from '@modules/shared';
 
 @Injectable()
 export class TypesenseClientService implements OnModuleInit {

apps/api/src/modules/search/infrastructure/services/typesense-search.repository.ts

@@ -1,14 +1,14 @@
 import { Injectable } from '@nestjs/common';
 import { type Client as TypesenseClient } from 'typesense';
 import { type CollectionCreateSchema } from 'typesense/lib/Typesense/Collections';
-import { type LoggerService } from '@modules/shared';
+import { LoggerService } from '@modules/shared';
 import {
   type ISearchRepository,
   type ListingDocument,
   type SearchParams,
   type SearchResult,
 } from '../../domain/repositories/search.repository';
-import { type TypesenseClientService } from './typesense-client.service';
+import { TypesenseClientService } from './typesense-client.service';
 
 const COLLECTION_NAME = 'listings';