feat：更新依赖项的源地址，将所有依赖的镜像地址更改为官方的Yarn注册表地址，并在应用模块中引入新的Exercises模块。

src/app.module.ts

@@ -11,6 +11,7 @@ import { TrainingPlansModule } from './training-plans/training-plans.module';
 import { ArticlesModule } from './articles/articles.module';
 import { RecommendationsModule } from './recommendations/recommendations.module';
 import { ActivityLogsModule } from './activity-logs/activity-logs.module';
+import { ExercisesModule } from './exercises/exercises.module';
 
 @Module({
   imports: [
@@ -27,6 +28,7 @@ import { ActivityLogsModule } from './activity-logs/activity-logs.module';
     ArticlesModule,
     RecommendationsModule,
     ActivityLogsModule,
+    ExercisesModule,
   ],
   controllers: [AppController],
   providers: [AppService],