feat: 完成sys模块迁移，对齐PHP/Java框架

- 重构sys模块架构，严格按admin/api/core分层
- 对齐所有sys实体与数据库表结构
- 实现完整的adminapi控制器，匹配PHP/Java契约
- 修复依赖注入问题，确保服务正确注册
- 添加自动迁移工具和契约验证
- 完善多租户支持和审计功能
- 统一命名规范，与PHP业务逻辑保持一致

wwjcloud/src/common/agreement/agreement.module.ts

@@ -1,14 +0,0 @@
-import { Module } from '@nestjs/common';
-import { TypeOrmModule } from '@nestjs/typeorm';
-import { AgreementController } from './controllers/api/AgreementController';
-import { AgreementService } from './services/api/AgreementService';
-import { CoreAgreementService } from './services/core/CoreAgreementService';
-import { Agreement } from './entities/Agreement';
-
-@Module({
-  imports: [TypeOrmModule.forFeature([Agreement])],
-  controllers: [AgreementController],
-  providers: [AgreementService, CoreAgreementService],
-  exports: [AgreementService, CoreAgreementService],
-})
-export class AgreementModule {}