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>

components/charts/WaitTimeTodayChart.tsx

@@ -3,6 +3,7 @@
 import { LineChart, Line, XAxis, YAxis, CartesianGrid, Tooltip, ResponsiveContainer, Legend } from "recharts";
 
 export interface TodaySample {
+  recordedAt: string;
   localTime: string;
   isOpen: boolean;
   waitMinutes: number | null;
@@ -14,10 +15,18 @@ interface Props {
   hasFastLane: boolean;
 }
 
+const TIME_FMT = new Intl.DateTimeFormat([], {
+  hour: "2-digit",
+  minute: "2-digit",
+  hour12: false,
+});
+
 export default function WaitTimeTodayChart({ samples, hasFastLane }: Props) {
   // Map samples: closed periods → null so Recharts breaks the line.
+  // X-axis time is rendered in the viewer's local timezone (Intl with no
+  // tz arg) so an Eastern-time user sees ET regardless of which park.
   const data = samples.map((s) => ({
-    time: s.localTime,
+    time: TIME_FMT.format(new Date(s.recordedAt)),
     wait: s.isOpen ? s.waitMinutes : null,
     fl: s.isOpen ? s.fastLaneMinutes : null,
   }));