Complete guide for accessing and managing training data with the intervals.icu API. Use when working with Intervals.icu athlete profiles, activities, workouts, events, wellness data, and training plans. Covers authentication, retrieving activities with combined data fields, managing calendar events with planned workouts, and creating/updating training data. Includes curl examples for all major operations.

全面指南：通过 intervals.icu API 访问和管理训练数据。适用于使用 Intervals.icu 运动员档案、活动、训练、赛事、健康数据和训练计划的场景。涵盖身份验证、获取包含组合数据字段的活动、管理包含计划训练的日历事件，以及创建和更新训练数据。包含所有主要操作的 curl 示例。