feat(diet-records): 新增营养成分分析记录功能

- 添加营养成分分析记录数据模型和数据库集成
- 实现分析记录保存功能，支持成功和失败状态记录
- 新增获取用户营养成分分析记录的API接口
- 支持按日期范围、状态等条件筛选查询
- 提供分页查询功能，优化大数据量场景性能

src/diet-records/dto/nutrition-analysis-record.dto.ts

@@ -0,0 +1,114 @@
+import { ApiProperty } from '@nestjs/swagger';
+import { ApiResponseDto } from '../../base.dto';
+
+/**
+ * 营养成分分析记录项DTO
+ */
+export class NutritionAnalysisRecordDto {
+  @ApiProperty({ description: '记录ID', example: 1 })
+  id: number;
+
+  @ApiProperty({ description: '用户ID', example: 'user123' })
+  userId: string;
+
+  @ApiProperty({ description: '分析图片URL', example: 'https://example.com/nutrition-label.jpg' })
+  imageUrl: string;
+
+  @ApiProperty({ description: '营养成分分析结果' })
+  analysisResult: any;
+
+  @ApiProperty({ description: '分析状态', example: 'success' })
+  status: string;
+
+  @ApiProperty({ description: '分析消息', example: '分析成功' })
+  message: string;
+
+  @ApiProperty({ description: 'AI模型提供商', example: 'dashscope' })
+  aiProvider: string;
+
+  @ApiProperty({ description: '使用的AI模型', example: 'qwen-vl-max' })
+  aiModel: string;
+
+  @ApiProperty({ description: '识别到的营养素数量', example: 15 })
+  nutritionCount: number;
+
+  @ApiProperty({ description: '创建时间' })
+  createdAt: Date;
+
+  @ApiProperty({ description: '更新时间' })
+  updatedAt: Date;
+}
+
+/**
+ * 营养成分分析记录列表响应DTO
+ */
+export class NutritionAnalysisRecordsResponseDto extends ApiResponseDto<{
+  records: NutritionAnalysisRecordDto[];
+  total: number;
+  page: number;
+  limit: number;
+  totalPages: number;
+}> {
+  constructor(code: number, message: string, data: {
+    records: NutritionAnalysisRecordDto[];
+    total: number;
+    page: number;
+    limit: number;
+    totalPages: number;
+  }) {
+    super(code, message, data);
+  }
+
+  /**
+   * 创建成功响应
+   */
+  static createSuccess(
+    records: NutritionAnalysisRecordDto[],
+    total: number,
+    page: number,
+    limit: number,
+    message: string = '获取营养分析记录成功'
+  ): NutritionAnalysisRecordsResponseDto {
+    const totalPages = Math.ceil(total / limit);
+    return new NutritionAnalysisRecordsResponseDto(0, message, {
+      records,
+      total,
+      page,
+      limit,
+      totalPages,
+    });
+  }
+
+  /**
+   * 创建失败响应
+   */
+  static createError(message: string = '获取营养分析记录失败'): NutritionAnalysisRecordsResponseDto {
+    return new NutritionAnalysisRecordsResponseDto(1, message, {
+      records: [],
+      total: 0,
+      page: 1,
+      limit: 20,
+      totalPages: 0,
+    });
+  }
+}
+
+/**
+ * 查询营养分析记录请求DTO
+ */
+export class GetNutritionAnalysisRecordsQueryDto {
+  @ApiProperty({ description: '页码', example: 1, required: false })
+  page?: number;
+
+  @ApiProperty({ description: '每页数量', example: 20, required: false })
+  limit?: number;
+
+  @ApiProperty({ description: '开始日期', example: '2023-01-01', required: false })
+  startDate?: string;
+
+  @ApiProperty({ description: '结束日期', example: '2023-12-31', required: false })
+  endDate?: string;
+
+  @ApiProperty({ description: '分析状态', example: 'success', required: false })
+  status?: string;
+}