feat(mining-admin-service): 添加/auth/profile接口

前端dashboard layout需要获取当前用户信息，添加GET /auth/profile接口

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/services/mining-admin-service/src/api/controllers/auth.controller.ts

@@ -1,4 +1,4 @@
-import { Controller, Post, Body, Req, HttpCode, HttpStatus } from '@nestjs/common';
+import { Controller, Post, Get, Body, Req, HttpCode, HttpStatus } from '@nestjs/common';
 import { ApiTags, ApiOperation, ApiBearerAuth, ApiProperty } from '@nestjs/swagger';
 import { IsString, IsNotEmpty } from 'class-validator';
 import { AuthService } from '../../application/services/auth.service';
@@ -29,6 +29,17 @@ export class AuthController {
     return this.authService.login(dto.username, dto.password, req.ip, req.headers['user-agent']);
   }
 
+  @Get('profile')
+  @ApiBearerAuth()
+  @ApiOperation({ summary: '获取当前用户信息' })
+  async getProfile(@Req() req: any) {
+    return {
+      id: req.admin.id,
+      username: req.admin.username,
+      role: req.admin.role,
+    };
+  }
+
   @Post('logout')
   @ApiBearerAuth()
   @HttpCode(HttpStatus.OK)