fix: render today's wait chart in viewer's local time + close stale live state

Two related polish fixes for the ride detail page:

1. Wait-time chart x-axis now uses Intl.DateTimeFormat with no timezone
   argument, so an Eastern-time user viewing a Pacific park sees ET on
   the axis. Backend now sends recorded_at (UTC) alongside local_time.

2. Ride-history endpoint now applies the same operating-window gate the
   /rides route uses. Queue-Times keeps reporting yesterday's last wait
   with isOpen=true overnight, which made the "Right now" pill show a
   live wait time when the park was actually closed.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

backend/src/routes/ride-history.ts

@@ -12,6 +12,7 @@
 import { Hono } from "hono";
 import { PARK_MAP } from "../../../lib/parks";
 import {
+  getDayData,
   getRideBySlug,
   getRideSamplesForDay,
   getRideDailyAggregates,
@@ -22,6 +23,7 @@ import {
 import { liveRidesCache, fastLaneCache } from "../services/live-cache";
 import { slugifyRideName } from "../../../lib/ride-slug";
 import { lookupFastLane } from "../../../lib/scrapers/sixflags-waittimes";
+import { getTodayLocal, isWithinOperatingWindow } from "../../../lib/env";
 
 const app = new Hono();
 
@@ -72,6 +74,15 @@ app.get("/:parkId/rides/:slug", (c) => {
   const fastLaneCacheEntry = fastLaneCache.get(parkId);
   const flMatch = liveMatch && fastLaneCacheEntry ? lookupFastLane(liveMatch.name, fastLaneCacheEntry) : null;
 
+  // Operating-window gate. Queue-Times keeps reporting yesterday's last wait
+  // with isOpen=true overnight, so we override to closed when we're outside
+  // the park's hours — same behaviour as the /rides route.
+  const todayData = getDayData(parkId, getTodayLocal());
+  const withinWindow = todayData?.hoursLabel
+    ? isWithinOperatingWindow(todayData.hoursLabel, park.timezone)
+    : false;
+  const liveIsOpen = Boolean(liveMatch?.isOpen) && withinWindow;
+
   c.header("Cache-Control", "public, max-age=60, stale-while-revalidate=120");
   return c.json({
     park: {
@@ -91,10 +102,10 @@ app.get("/:parkId/rides/:slug", (c) => {
     },
     live: liveMatch
       ? {
-          isOpen: liveMatch.isOpen,
-          waitMinutes: liveMatch.waitMinutes,
+          isOpen: liveIsOpen,
+          waitMinutes: liveIsOpen ? liveMatch.waitMinutes : 0,
           hasFastLane: Boolean(flMatch?.hasFastLane),
-          fastLaneMinutes: liveMatch.isOpen ? (flMatch?.fastLaneMinutes ?? null) : null,
+          fastLaneMinutes: liveIsOpen ? (flMatch?.fastLaneMinutes ?? null) : null,
           lastUpdated: liveMatch.lastUpdated,
         }
       : null,