feat: use dateless Six Flags API endpoint for live today data

The API without a date param returns today's operating data directly,
invalidating the previous assumption that today's date was always missing.

- Add fetchToday(apiId, revalidate?) to sixflags.ts — calls the dateless
  endpoint with optional ISR cache
- Extract parseApiDay() helper shared by scrapeMonth and fetchToday
- Update upsertDay WHERE clause: >= date('now') so today can be updated
  (was > date('now'), which froze today after first write)
- scrape.ts: add a today-scrape pass after the monthly loop so each run
  always writes fresh today data to the DB
- app/page.tsx: fetch live today data for all parks (5-min ISR) and merge
  into the data map before computing open/closing/weatherDelay status
- app/park/[id]/page.tsx: prefer live today data from API for todayData
  so weather delays and hour changes surface within 5 minutes
- scrapeRidesForDay: update comment only — role unchanged (QT fallback)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/page.tsx

@@ -1,10 +1,12 @@
 import { HomePageClient } from "@/components/HomePageClient";
 import { PARKS } from "@/lib/parks";
-import { openDb, getDateRange } from "@/lib/db";
+import { openDb, getDateRange, getApiId } from "@/lib/db";
 import { getTodayLocal, isWithinOperatingWindow, getOperatingStatus } from "@/lib/env";
 import { fetchLiveRides } from "@/lib/scrapers/queuetimes";
+import { fetchToday } from "@/lib/scrapers/sixflags";
 import { QUEUE_TIMES_IDS } from "@/lib/queue-times-map";
 import { readParkMeta, getCoasterSet } from "@/lib/park-meta";
+import type { DayData } from "@/lib/db";
 
 interface PageProps {
   searchParams: Promise<{ week?: string }>;
@@ -49,6 +51,31 @@ export default async function HomePage({ searchParams }: PageProps) {
 
   const db = openDb();
   const data = getDateRange(db, weekStart, endDate);
+
+  // Merge live today data from the Six Flags API (dateless endpoint, 5-min ISR cache).
+  // This ensures weather delays, early closures, and hour changes surface within 5 minutes
+  // without waiting for the next scheduled scrape. Only fetched when viewing the current week.
+  if (weekDates.includes(today)) {
+    const todayResults = await Promise.all(
+      PARKS.map(async (p) => {
+        const apiId = getApiId(db, p.id);
+        if (!apiId) return null;
+        const live = await fetchToday(apiId, 300); // 5-min ISR cache
+        return live ? { parkId: p.id, live } : null;
+      })
+    );
+    for (const result of todayResults) {
+      if (!result) continue;
+      const { parkId, live } = result;
+      if (!data[parkId]) data[parkId] = {};
+      data[parkId][today] = {
+        isOpen: live.isOpen,
+        hoursLabel: live.hoursLabel ?? null,
+        specialType: live.specialType ?? null,
+      } satisfies DayData;
+    }
+  }
+
   db.close();
 
   const scrapedCount = Object.values(data).reduce(