sync(theme-3): 同步 main 最新 API/Admin 与玩家端逻辑

从 main 同步站内信手动发送、媒体库选择、列表子路由重构等 API/Admin 改动；玩家端仅合并 ADMIN_CUSTOM 富文本、消息预览与充值截图压缩逻辑，保留 theme-3 样式。

apps/api/src/domains/deposit/deposit.module.ts

@@ -1,5 +1,6 @@
 import { Module } from '@nestjs/common';
 import { DepositService } from './deposit.service';
+import { DepositScreenshotCleanupService } from './deposit-screenshot-cleanup.service';
 import { WalletModule } from '../ledger/wallet.module';
 import { AgentsModule } from '../agent/agents.module';
 import { PlayerMessagesModule } from '../player-messages/player-messages.module';
@@ -7,7 +8,7 @@ import { SystemConfigModule } from '../../shared/config/system-config.module';
 
 @Module({
   imports: [WalletModule, AgentsModule, PlayerMessagesModule, SystemConfigModule],
-  providers: [DepositService],
-  exports: [DepositService],
+  providers: [DepositService, DepositScreenshotCleanupService],
+  exports: [DepositService, DepositScreenshotCleanupService],
 })
 export class DepositModule {}