Add vpinball: a browser Visual Pinball player

Next.js app that plays real .vpx tables via @valknar/vpinball-wasm
(WebAssembly Visual Pinball). Demo mode with the bundled default
table, drag-and-drop custom table upload, a cabinet-styled UI with a
coin-door HUD (fullscreen/stats/info/eject), a custom 404 page, PWA
support (hand-rolled service worker), and a static Docker Compose
deployment behind nginx.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012hQoM3jJT1Lx7CMTciMzvD

components/pinball/PlayView.tsx

@@ -0,0 +1,51 @@
+"use client";
+
+import { useEffect, useState } from "react";
+import PinballCanvas from "./PinballCanvas";
+import { takePendingTable } from "@/lib/pinball/tableSelectionStore";
+import type { TableInfo } from "@/lib/pinball/types";
+
+interface ResolvedTable {
+  tableData?: ArrayBuffer;
+  tableInfo: TableInfo;
+}
+
+export default function PlayView() {
+  const [resolved, setResolved] = useState<ResolvedTable | null>(null);
+
+  useEffect(() => {
+    let cancelled = false;
+    (async () => {
+      const file = takePendingTable();
+      if (file) {
+        const tableData = await file.arrayBuffer();
+        if (cancelled) return;
+        setResolved({
+          tableData,
+          tableInfo: { name: file.name, sizeBytes: file.size, isDemo: false },
+        });
+        return;
+      }
+      // No pending upload (fresh visit, or a hard refresh of /play) — fall
+      // back to the bundled demo table rather than dead-ending the route.
+      setResolved({
+        tableInfo: { name: "Demo table", sizeBytes: 0, isDemo: true },
+      });
+    })();
+    return () => {
+      cancelled = true;
+    };
+  }, []);
+
+  if (!resolved) {
+    return (
+      <div className="flex h-full w-full items-center justify-center bg-ink font-mono text-chrome">
+        Preparing table…
+      </div>
+    );
+  }
+
+  return (
+    <PinballCanvas tableData={resolved.tableData} tableInfo={resolved.tableInfo} key={resolved.tableInfo.name} />
+  );
+}