mini-prog/miniprogram/game/core/gameEvent.ts

export type GameEvent =
  | { type: 'session_started'; at: number }
  | { type: 'gps_updated'; at: number; lon: number; lat: number; accuracyMeters: number | null }
  | { type: 'punch_requested'; at: number }
  | { type: 'session_ended'; at: number }