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/users/users.service.ts

@@ -30,6 +30,7 @@ import { RevenueCatWebhookDto, RevenueCatEventType } from './dto/revenue-cat-web
 import { RestorePurchaseDto, RestorePurchaseResponseDto, RestoredPurchaseInfo, ActiveEntitlement, NonSubscriptionTransaction } from './dto/restore-purchase.dto';
 import { PurchaseRestoreLog, RestoreStatus, RestoreSource } from './models/purchase-restore-log.model';
 import { BlockedTransaction, BlockReason } from './models/blocked-transaction.model';
+import { UserWeightHistory, WeightUpdateSource } from './models/user-weight-history.model';
 
 const DEFAULT_FREE_USAGE_COUNT = 10;
 
@@ -52,6 +53,8 @@ export class UsersService {
     private blockedTransactionModel: typeof BlockedTransaction,
     @InjectModel(UserProfile)
     private userProfileModel: typeof UserProfile,
+    @InjectModel(UserWeightHistory)
+    private userWeightHistoryModel: typeof UserWeightHistory,
     @InjectConnection()
     private sequelize: Sequelize,
   ) { }
@@ -157,7 +160,14 @@ export class UsersService {
       if (dailyStepsGoal !== undefined) profile.dailyStepsGoal = dailyStepsGoal as any;
       if (dailyCaloriesGoal !== undefined) profile.dailyCaloriesGoal = dailyCaloriesGoal as any;
       if (pilatesPurposes !== undefined) profile.pilatesPurposes = pilatesPurposes as any;
-      if (weight !== undefined) profile.weight = weight as any;
+      if (weight !== undefined) {
+        profile.weight = weight as any;
+        try {
+          await this.userWeightHistoryModel.create({ userId, weight, source: WeightUpdateSource.Manual });
+        } catch (e) {
+          this.logger.error(`记录体重历史失败: ${e instanceof Error ? e.message : String(e)}`);
+        }
+      }
       if (height !== undefined) profile.height = height as any;
       await profile.save();
     }
@@ -172,6 +182,35 @@ export class UsersService {
     };
   }
 
+  async addWeightByVision(userId: string, weight: number): Promise<void> {
+    const t = await this.sequelize.transaction();
+    try {
+      const [profile] = await this.userProfileModel.findOrCreate({ where: { userId }, defaults: { userId }, transaction: t });
+      profile.weight = weight as any;
+      await profile.save({ transaction: t });
+      await this.userWeightHistoryModel.create({ userId, weight, source: WeightUpdateSource.Vision }, { transaction: t });
+      await t.commit();
+    } catch (e) {
+      await t.rollback();
+      this.logger.error(`addWeightByVision error: ${e instanceof Error ? e.message : String(e)}`);
+    }
+  }
+
+  async getWeightHistory(userId: string, params: { start?: Date; end?: Date; limit?: number } = {}) {
+    const where: any = { userId };
+    if (params.start || params.end) {
+      where.createdAt = {} as any;
+      if (params.start) where.createdAt.$gte = params.start as any;
+      if (params.end) where.createdAt.$lte = params.end as any;
+    }
+    const limit = params.limit && params.limit > 0 ? Math.min(1000, params.limit) : 200;
+    const rows = await this.userWeightHistoryModel.findAll({
+      where,
+      order: [['created_at', 'DESC']],
+      limit,
+    });
+    return rows.map(r => ({ weight: r.weight, source: r.source, createdAt: r.createdAt }));
+  }
 
   /**
    * Apple 登录