refactor(api): replace new Logger() with DI LoggerService and split large files

- Migrate 30 files from `new Logger(ClassName.name)` to injected LoggerService
  for consistent PII masking and centralized logging config
- Split prisma-admin-query.repository.ts (313→121 lines) into admin-stats.queries.ts
  and admin-user.queries.ts
- Split admin.controller.ts (285→154 lines) into admin-moderation.controller.ts
- Split prisma-listing.repository.ts (274→111 lines) into listing-read.queries.ts
- Update 28 test files with mock LoggerService
- All 831 tests passing, zero direct new Logger() calls remaining

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

apps/api/src/modules/payments/infrastructure/services/vnpay.service.ts

@@ -1,7 +1,8 @@
 import * as crypto from 'crypto';
-import { Injectable, Logger } from '@nestjs/common';
+import { Injectable } from '@nestjs/common';
 import { type ConfigService } from '@nestjs/config';
 import { type PaymentProvider } from '@prisma/client';
+import { type LoggerService } from '@modules/shared';
 import {
   type IPaymentGateway,
   type CreatePaymentUrlParams,
@@ -13,7 +14,6 @@ import {
 
 @Injectable()
 export class VnpayService implements IPaymentGateway {
-  private readonly logger = new Logger(VnpayService.name);
   readonly provider: PaymentProvider = 'VNPAY';
 
   private readonly tmnCode: string;
@@ -21,7 +21,10 @@ export class VnpayService implements IPaymentGateway {
   private readonly baseUrl: string;
   private readonly apiUrl: string;
 
-  constructor(private readonly config: ConfigService) {
+  constructor(
+    private readonly config: ConfigService,
+    private readonly logger: LoggerService,
+  ) {
     this.tmnCode = this.config.getOrThrow<string>('VNPAY_TMN_CODE');
     this.hashSecret = this.config.getOrThrow<string>('VNPAY_HASH_SECRET');
     this.baseUrl = this.config.get<string>('VNPAY_BASE_URL', 'https://sandbox.vnpayment.vn/paymentv2/vpcpay.html');
@@ -58,7 +61,7 @@ export class VnpayService implements IPaymentGateway {
 
     const paymentUrl = `${this.baseUrl}?${new URLSearchParams(sortedParams).toString()}`;
 
-    this.logger.log(`VNPay payment URL created for order ${params.orderId}`);
+    this.logger.log(`VNPay payment URL created for order ${params.orderId}`, 'VnpayService');
 
     return {
       paymentUrl,
@@ -89,6 +92,7 @@ export class VnpayService implements IPaymentGateway {
 
     this.logger.log(
       `VNPay callback verified: orderId=${orderId}, valid=${isValid}, success=${isSuccess}`,
+      'VnpayService',
     );
 
     return {
@@ -151,6 +155,7 @@ export class VnpayService implements IPaymentGateway {
 
       this.logger.log(
         `VNPay refund ${success ? 'successful' : 'failed'} for ${params.providerTxId}`,
+        'VnpayService',
       );
 
       return {
@@ -158,7 +163,7 @@ export class VnpayService implements IPaymentGateway {
         refundTxId: success ? requestId : null,
       };
     } catch (error) {
-      this.logger.error(`VNPay refund error: ${error}`);
+      this.logger.error(`VNPay refund error: ${error}`, undefined, 'VnpayService');
       return { success: false, refundTxId: null };
     }
   }