fix: address channel migration review

Author: tariknz

src/frontend/components/SectorDelta/widgetRuntimeDefinition.ts

@@ -10,4 +10,5 @@ export default {
     'track-state.snapshot',
   ],
   ratePreset: 'static',
+  channelRates: { 'track-state.snapshot': 25 },
 } satisfies WidgetRuntimeDefinition;

src/frontend/components/Standings/hooks/useSessionLapCount.tsx

@@ -1,4 +1,5 @@
 import { useSessionTimingSnapshot } from '@irdashies/context';
+import type { SessionTimingSnapshot } from '@irdashies/types';
 
 const EMPTY = {
   state: 0,
@@ -8,6 +9,13 @@ const EMPTY = {
   timeTotal: 0,
   timeRemaining: 0,
   greenFlagTimestamp: 0,
-};
+  sessionType: undefined,
+  isFixedLapRace: false,
+  totalRaceLaps: 0,
+  totalRaceTime: 0,
+  adjustedRaceTime: 0,
+  sessionNum: null,
+  version: 0,
+} satisfies SessionTimingSnapshot;
 
 export const useSessionLapCount = () => useSessionTimingSnapshot() ?? EMPTY;

src/frontend/components/Standings/hooks/useTrackTemperature.tsx

@@ -1,9 +1,11 @@
 import { useMemo } from 'react';
 import { useSessionBarSnapshot } from '@irdashies/context';
 
+type TemperatureUnit = 'Metric' | 'Imperial';
+
 interface UseTrackTemperatureOptions {
-  airTempUnit?: 'Metric' | 'Imperial';
-  trackTempUnit?: 'Metric' | 'Imperial';
+  airTempUnit?: TemperatureUnit;
+  trackTempUnit?: TemperatureUnit;
 }
 
 export const useTrackTemperature = (
@@ -15,24 +17,22 @@ export const useTrackTemperature = (
   const airTempVal = snapshot?.airTemp;
 
   const trackTemp = useMemo(() => {
-    const trackTemp = trackTempVal ?? 0;
-    if (trackTemp === null || trackTemp === undefined) return '';
+    if (trackTempVal === undefined) return '';
 
     // Convert to Fahrenheit if Imperial unit is selected
     const displayTemp =
-      trackTempUnit === 'Imperial' ? (trackTemp * 9) / 5 + 32 : trackTemp;
+      trackTempUnit === 'Imperial' ? (trackTempVal * 9) / 5 + 32 : trackTempVal;
 
     const unit = trackTempUnit === 'Imperial' ? 'F' : 'C';
     return `${displayTemp.toFixed(0)}°${unit}`;
   }, [trackTempVal, trackTempUnit]);
 
   const airTemp = useMemo(() => {
-    const airTemp = airTempVal ?? 0;
-    if (airTemp === null || airTemp === undefined) return '';
+    if (airTempVal === undefined) return '';
 
     // Convert to Fahrenheit if Imperial unit is selected
     const displayTemp =
-      airTempUnit === 'Imperial' ? (airTemp * 9) / 5 + 32 : airTemp;
+      airTempUnit === 'Imperial' ? (airTempVal * 9) / 5 + 32 : airTempVal;
 
     const unit = airTempUnit === 'Imperial' ? 'F' : 'C';
     return `${displayTemp.toFixed(0)}°${unit}`;

src/frontend/components/Weather/hooks/useTrackTemperature.tsx

@@ -15,17 +15,17 @@ export const useTrackTemperature = (
   const airTempVal = snapshot?.airTemp;
 
   const trackTemp = useMemo(() => {
-    const trackTemp = trackTempVal ?? 0;
+    if (trackTempVal === undefined) return '';
     const displayTemp =
-      trackTempUnit === 'Imperial' ? (trackTemp * 9) / 5 + 32 : trackTemp;
+      trackTempUnit === 'Imperial' ? (trackTempVal * 9) / 5 + 32 : trackTempVal;
     const unit = trackTempUnit === 'Imperial' ? 'F' : 'C';
     return `${Math.round(displayTemp)}°${unit}`;
   }, [trackTempVal, trackTempUnit]);
 
   const airTemp = useMemo(() => {
-    const airTemp = airTempVal ?? 0;
+    if (airTempVal === undefined) return '';
     const displayTemp =
-      airTempUnit === 'Imperial' ? (airTemp * 9) / 5 + 32 : airTemp;
+      airTempUnit === 'Imperial' ? (airTempVal * 9) / 5 + 32 : airTempVal;
     const unit = airTempUnit === 'Imperial' ? 'F' : 'C';
     return `${Math.round(displayTemp)}°${unit}`;
   }, [airTempVal, airTempUnit]);

src/frontend/context/CarSpeedStore/TopSpeedStoreUpdater.tsx

@@ -9,15 +9,19 @@ import { useTopSpeedStore } from './TopSpeedStore';
  */
 export const useTopSpeedStoreUpdater = (enabled: boolean) => {
   const snapshot = useSessionBarSnapshot();
+  const hasSnapshot = snapshot !== undefined;
+  const lastLapTopSpeed = snapshot?.lastLapTopSpeed ?? null;
+  const sessionBestTopSpeed = snapshot?.sessionBestTopSpeed ?? null;
+  const sessionNum = snapshot?.sessionNum ?? null;
 
   useEffect(() => {
-    if (!enabled || !snapshot) return;
+    if (!enabled || !hasSnapshot) return;
     useTopSpeedStore.setState({
-      lastLapTopSpeed: snapshot.lastLapTopSpeed,
-      sessionBestTopSpeed: snapshot.sessionBestTopSpeed,
-      sessionNum: snapshot.sessionNum,
+      lastLapTopSpeed,
+      sessionBestTopSpeed,
+      sessionNum,
     });
-  }, [enabled, snapshot]);
+  }, [enabled, hasSnapshot, lastLapTopSpeed, sessionBestTopSpeed, sessionNum]);
 };
 
 /**

test-data/telemetry/ai-race-10min.golden.json

@@ -10325,7 +10325,7 @@
     },
     {
       "name": "track-state",
-      "schemaVersion": 1,
+      "schemaVersion": 2,
       "frameCount": 36000,
       "rollingHash": "382b2a33bff4f802f3cdcc9f2113f5f1a994f051489b1f32293540472c0a0fb6",
       "checkpoints": {

tools/telemetry-replay/track-state-probe.ts

@@ -22,7 +22,7 @@ export const createTrackStateProbe = (): ReplayProbe<TrackStateSnapshot> => {
   const processor = new TrackStateProcessor();
   return {
     name: 'track-state',
-    schemaVersion: 1,
+    schemaVersion: 2,
     variables: [
       'CamCarIdx',
       'CarIdxLapDistPct',