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/auth/infrastructure/strategies/zalo-oauth.strategy.ts

@@ -1,4 +1,5 @@
-import { Injectable, Logger } from '@nestjs/common';
+import { Injectable } from '@nestjs/common';
+import { type LoggerService } from '@modules/shared';
 import { type OAuthService, type OAuthUserProfile } from '../services/oauth.service';
 import { type TokenPair } from '../services/token.service';
 
@@ -36,13 +37,14 @@ interface ZaloUserInfo {
 
 @Injectable()
 export class ZaloOAuthStrategy {
-  private readonly logger = new Logger(ZaloOAuthStrategy.name);
-
   private readonly appId: string;
   private readonly appSecret: string;
   private readonly callbackUrl: string;
 
-  constructor(private readonly oauthService: OAuthService) {
+  constructor(
+    private readonly oauthService: OAuthService,
+    private readonly logger: LoggerService,
+  ) {
     const appId = process.env['ZALO_APP_ID'];
     const appSecret = process.env['ZALO_APP_SECRET'];
 
@@ -119,7 +121,7 @@ export class ZaloOAuthStrategy {
     const data = (await response.json()) as ZaloTokenResponse;
 
     if (data.error) {
-      this.logger.error(`Zalo token exchange failed: ${data.error_description ?? data.error}`);
+      this.logger.error(`Zalo token exchange failed: ${data.error_description ?? data.error}`, undefined, 'ZaloOAuthStrategy');
       throw new Error(`Zalo OAuth error: ${data.error_description ?? 'Token exchange failed'}`);
     }
 
@@ -143,7 +145,7 @@ export class ZaloOAuthStrategy {
     const data = (await response.json()) as ZaloUserInfo;
 
     if (data.error) {
-      this.logger.error(`Zalo user info fetch failed: ${data.message ?? data.error}`);
+      this.logger.error(`Zalo user info fetch failed: ${data.message ?? data.error}`, undefined, 'ZaloOAuthStrategy');
       throw new Error(`Zalo OAuth error: ${data.message ?? 'Failed to fetch user info'}`);
     }