Struct MotionSnapshot 

#[non_exhaustive]
pub struct MotionSnapshot {
    pub position: JointArray<Rad>,
    pub velocity: JointArray<RadPerSecond>,
    pub torque: JointArray<NewtonMeter>,
    pub timestamp: Instant,
}

运动快照（逻辑原子性）

设计说明：

• 使用 #[non_exhaustive] 允许未来非破坏性地添加字段
• 例如：加速度、数据有效性标志等衍生数据

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

position: JointArray<Rad>

关节位置

velocity: JointArray<RadPerSecond>

关节速度（✅ 使用类型安全的单位）

torque: JointArray<NewtonMeter>

关节力矩

timestamp: Instant

读取时间戳（用于调试）

Trait Implementations

impl Clone for MotionSnapshot

fn clone(&self) -> MotionSnapshot

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MotionSnapshot

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.