refactor: hardcode API IDs and coaster lists, remove Playwright discovery

Embed Six Flags API IDs directly in the park registry and snapshot
coaster lists from park-meta.json into a TypeScript module. This
eliminates the Playwright-based discovery script, RCDB scraper, and
runtime dependency on park-meta.json — preparing for the backend
API transition.

- Add apiId field to Park type and all 24 park entries
- Create lib/coaster-data.ts with hardcoded coaster lists
- Update page components to use park.apiId and new getCoasterSet()
- Remove scripts/discover.ts, lib/scrapers/rcdb.ts, lib/park-meta.ts
- Remove data/park-meta.json from shared volume
- Remove playwright devDependency and discover npm script
- Simplify scripts/scrape.ts (no RCDB, no discovery checks)

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

app/park/[id]/page.tsx

@@ -2,12 +2,12 @@ import Link from "next/link";
 import { BackToCalendarLink } from "@/components/BackToCalendarLink";
 import { notFound } from "next/navigation";
 import { PARK_MAP } from "@/lib/parks";
-import { openDb, getParkMonthData, getApiId } from "@/lib/db";
+import { openDb, getParkMonthData } from "@/lib/db";
 import { scrapeRidesForDay } from "@/lib/scrapers/sixflags";
 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 { getCoasterSet } from "@/lib/coaster-data";
 import { ParkMonthCalendar } from "@/components/ParkMonthCalendar";
 import { LiveRidePanel } from "@/components/LiveRidePanel";
 import type { RideStatus, RidesFetchResult } from "@/lib/scrapers/sixflags";
@@ -42,13 +42,9 @@ export default async function ParkPage({ params, searchParams }: PageProps) {
 
   const db = openDb();
   const monthData = getParkMonthData(db, id, year, month);
-  const apiId = getApiId(db, id);
   db.close();
 
-  // Prefer live today data from the Six Flags API (5-min ISR cache) so that
-  // weather delays and hour changes surface immediately rather than showing
-  // stale DB values. Fall back to DB if the API call fails.
-  const liveToday = apiId !== null ? await fetchToday(apiId, 300).catch(() => null) : null;
+  const liveToday = await fetchToday(park.apiId, 300).catch(() => null);
   const todayData = liveToday
     ? { isOpen: liveToday.isOpen, hoursLabel: liveToday.hoursLabel ?? null, specialType: liveToday.specialType ?? null }
     : monthData[today];
@@ -56,8 +52,7 @@ export default async function ParkPage({ params, searchParams }: PageProps) {
 
   // ── Ride data: try live Queue-Times first, fall back to schedule ──────────
   const queueTimesId = QUEUE_TIMES_IDS[id];
-  const parkMeta = readParkMeta();
-  const coasterSet = getCoasterSet(id, parkMeta);
+  const coasterSet = getCoasterSet(id);
 
   let liveRides: LiveRidesResult | null = null;
   let ridesResult: RidesFetchResult | null = null;
@@ -87,9 +82,8 @@ export default async function ParkPage({ params, searchParams }: PageProps) {
     liveRides.rides.length > 0 &&
     liveRides.rides.every((r) => !r.isOpen);
 
-  // Only hit the schedule API as a fallback when Queue-Times live data is unavailable.
-  if (!liveRides && apiId !== null) {
-    ridesResult = await scrapeRidesForDay(apiId, today);
+  if (!liveRides) {
+    ridesResult = await scrapeRidesForDay(park.apiId, today);
   }
 
   return (
@@ -175,7 +169,6 @@ export default async function ParkPage({ params, searchParams }: PageProps) {
             <RideList
               ridesResult={ridesResult}
               parkOpenToday={!!parkOpenToday}
-              apiIdMissing={apiId === null && !queueTimesId}
             />
           )}
         </section>
@@ -256,24 +249,10 @@ function LiveBadge() {
 function RideList({
   ridesResult,
   parkOpenToday,
-  apiIdMissing,
 }: {
   ridesResult: RidesFetchResult | null;
   parkOpenToday: boolean;
-  apiIdMissing: boolean;
 }) {
-  if (apiIdMissing) {
-    return (
-      <Callout>
-        Park API ID not discovered yet. Run{" "}
-        <code style={{ background: "var(--color-surface-2)", padding: "1px 5px", borderRadius: 3, fontSize: "0.8em" }}>
-          npm run discover
-        </code>{" "}
-        to enable ride data.
-      </Callout>
-    );
-  }
-
   if (!parkOpenToday) {
     return <Callout>Park is closed today — no ride schedule available.</Callout>;
   }