Track daily calorie and protein intake, set goals, and log weight. Use when user mentions food they ate, wants to know remaining calories, or needs to track weight. Stores data in SQLite with automatic daily totals.

追踪每日卡路里和蛋白质摄入量，设定目标并记录体重。当用户提及所吃食物、询问剩余卡路里或需要记录体重时使用。数据存储在 SQLite 中，并自动计算每日总量。