变更背景：

原用户查询仍为占位实现，未读取数据库
影响范围：

用户列表查询逻辑
用户模块依赖注入配置
相关 TypeScript/ESM 导入路径规范化

feat(users): 接入 Prisma 用户查询并统一 ESM 导入路径

在用户模块中注册 PrismaService 作为 provider，完善依赖注入链路
将 UsersService 的 findAll 实现改为通过 Prisma 查询用户列表
为控制器查询接口补充明确的返回类型定义
统一相关导入语句为 .js 后缀，适配当前 ESM 导入规范
删除已不再使用的用户实体占位文件

src/app.module.ts

@@ -1,5 +1,5 @@
 import { Module } from '@nestjs/common';
-import { UsersModule } from './users/users.module';
+import { UsersModule } from './users/users.module.js';
 
 @Module({
   imports: [UsersModule],

src/users/dto/update-user.dto.ts

@@ -1,4 +1,4 @@
 import { PartialType } from '@nestjs/mapped-types';
-import { CreateUserDto } from './create-user.dto';
+import { CreateUserDto } from './create-user.dto.js';
 
 export class UpdateUserDto extends PartialType(CreateUserDto) {}

src/users/entities/user.entity.ts

@@ -1 +0,0 @@
-export class User {}

src/users/users.controller.ts

@@ -1,7 +1,16 @@
-import { Controller, Get, Post, Body, Patch, Param, Delete } from '@nestjs/common';
-import { UsersService } from './users.service';
-import { CreateUserDto } from './dto/create-user.dto';
-import { UpdateUserDto } from './dto/update-user.dto';
+import {
+  Controller,
+  Get,
+  Post,
+  Body,
+  Patch,
+  Param,
+  Delete,
+} from '@nestjs/common';
+import { UsersService } from './users.service.js';
+import { CreateUserDto } from './dto/create-user.dto.js';
+import { UpdateUserDto } from './dto/update-user.dto.js';
+import { User } from '../generated/prisma/client.js';
 
 @Controller('users')
 export class UsersController {
@@ -13,7 +22,7 @@ export class UsersController {
   }
 
   @Get()
-  findAll() {
+  findAll(): Promise<User[]> {
     return this.usersService.findAll();
   }
 

src/users/users.module.ts

@@ -1,9 +1,10 @@
 import { Module } from '@nestjs/common';
-import { UsersService } from './users.service';
-import { UsersController } from './users.controller';
+import { UsersService } from './users.service.js';
+import { UsersController } from './users.controller.js';
+import { PrismaService } from '../prisma.service.js';
 
 @Module({
   controllers: [UsersController],
-  providers: [UsersService],
+  providers: [UsersService, PrismaService],
 })
 export class UsersModule {}

src/users/users.service.ts

@@ -1,15 +1,18 @@
 import { Injectable } from '@nestjs/common';
-import { CreateUserDto } from './dto/create-user.dto';
-import { UpdateUserDto } from './dto/update-user.dto';
+import { CreateUserDto } from './dto/create-user.dto.js';
+import { UpdateUserDto } from './dto/update-user.dto.js';
+import { PrismaService } from '../prisma.service.js';
+import { User } from '../generated/prisma/client.js';
 
 @Injectable()
 export class UsersService {
+  constructor(private prisma: PrismaService) {}
   create(createUserDto: CreateUserDto) {
     return 'This action adds a new user';
   }
 
-  findAll() {
-    return `This action returns all users`;
+  findAll(): Promise<User[]> {
+    return this.prisma.user.findMany();
   }
 
   findOne(id: number) {