新增训练计划模块，包括控制器、服务、模型及数据传输对象，更新应用模块以引入新模块，同时在AI教练模块中添加体态评估功能，支持体重识别与更新，优化用户体重历史记录管理。

src/articles/articles.service.ts

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+import { Injectable, Logger, NotFoundException } from '@nestjs/common';
+import { InjectModel } from '@nestjs/sequelize';
+import { Op } from 'sequelize';
+import { Article } from './models/article.model';
+import { CreateArticleDto, QueryArticlesDto, ArticleVo } from './dto/article.dto';
+import { ResponseCode } from '../base.dto';
+
+@Injectable()
+export class ArticlesService {
+  private readonly logger = new Logger(ArticlesService.name);
+  constructor(
+    @InjectModel(Article)
+    private readonly articleModel: typeof Article,
+  ) { }
+
+  async create(dto: CreateArticleDto) {
+    const article = await this.articleModel.create({
+      title: dto.title,
+      publishedDate: dto.publishedDate as any,
+      htmlContent: dto.htmlContent,
+    });
+    return { code: ResponseCode.SUCCESS, message: 'success', data: article.toJSON() as ArticleVo };
+  }
+
+  async query(params: QueryArticlesDto) {
+    const page = Math.max(1, Number(params.page || 1));
+    const pageSize = Math.min(100, Math.max(1, Number(params.pageSize || 10)));
+    const where: any = {};
+    if (params.keyword) {
+      where.title = { [Op.like]: `%${params.keyword}%` };
+    }
+    if (params.startDate || params.endDate) {
+      where.publishedDate = {} as any;
+      if (params.startDate) (where.publishedDate as any)[Op.gte] = params.startDate as any;
+      if (params.endDate) (where.publishedDate as any)[Op.lte] = params.endDate as any;
+    }
+
+    const { rows, count } = await this.articleModel.findAndCountAll({
+      where,
+      order: [['publishedDate', 'DESC'], ['createdAt', 'DESC']],
+      offset: (page - 1) * pageSize,
+      limit: pageSize,
+    });
+
+    return {
+      code: ResponseCode.SUCCESS,
+      message: 'success',
+      data: { list: rows.map(r => r.toJSON() as ArticleVo), total: count, page, pageSize },
+    };
+  }
+
+  async getAndIncreaseReadCount(id: string) {
+    const article = await this.articleModel.findByPk(id);
+    if (!article) throw new NotFoundException('文章不存在');
+    article.readCount += 1;
+    await article.save();
+    return { code: ResponseCode.SUCCESS, message: 'success', data: article.toJSON() as ArticleVo };
+  }
+}
+
+