nestjs-backend-conventions

NestJS + Prisma 后端开发规范 — Module/Controller/Service 分层、DTO + class-validator、Prisma schema 多租户字段（hotelId/storeId/tenantId 等）强约束、JWT @CurrentUser/@UseGuards 鉴权、Wave 0-3 契约优先流程、Redis/BullMQ/UploadService/内容审核接入、AI 扣费 consume/refundWithRetry 双保险、HTTP 错误 code 规范。