Refine sensor integration strategy

miniprogram/game/telemetry/telemetryState.ts

@@ -1,6 +1,9 @@
 import { type LonLatPoint } from '../../utils/projection'
 import { type GameSessionStatus } from '../core/gameSessionState'
 
+export type DevicePose = 'upright' | 'tilted' | 'flat'
+export type HeadingConfidence = 'low' | 'medium' | 'high'
+
 export interface TelemetryState {
   sessionStatus: GameSessionStatus
   sessionStartedAt: number | null
@@ -15,6 +18,14 @@ export interface TelemetryState {
   lastGpsPoint: LonLatPoint | null
   lastGpsAt: number | null
   lastGpsAccuracyMeters: number | null
+  accelerometer: { x: number; y: number; z: number } | null
+  accelerometerUpdatedAt: number | null
+  accelerometerSampleCount: number
+  gyroscope: { x: number; y: number; z: number } | null
+  deviceMotion: { alpha: number | null; beta: number | null; gamma: number | null } | null
+  deviceHeadingDeg: number | null
+  devicePose: DevicePose
+  headingConfidence: HeadingConfidence
   heartRateBpm: number | null
   caloriesKcal: number | null
   calorieTrackingAt: number | null
@@ -34,6 +45,14 @@ export const EMPTY_TELEMETRY_STATE: TelemetryState = {
   lastGpsPoint: null,
   lastGpsAt: null,
   lastGpsAccuracyMeters: null,
+  accelerometer: null,
+  accelerometerUpdatedAt: null,
+  accelerometerSampleCount: 0,
+  gyroscope: null,
+  deviceMotion: null,
+  deviceHeadingDeg: null,
+  devicePose: 'upright',
+  headingConfidence: 'low',
   heartRateBpm: null,
   caloriesKcal: null,
   calorieTrackingAt: null,