Add ROM upload, local table library, engine bump, and UX/responsiveness fixes

- Bump @valknar/vpinball-wasm to 0.3.2 (PinMAME ROM support, MsgBox fix)
- Add optional PinMAME ROM .zip upload alongside .vpx tables
- Persist uploaded tables/ROMs in IndexedDB so users don't have to
  re-upload on later visits, with a library list on the landing page
- Fix Insert Coin key mismatch with the engine's real coin-door gating
  (now bound to 4, matching the shared table scripts) and surface it
  in the controls legend and "Tap to Start" hint
- Make the landing page, staging panel, and in-game HUD responsive for
  portrait phone widths; drop the landscape hint since portrait plays fine
- Replace the separate STATS HUD toggle with an FPS row in the info panel

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01N9JmzRBZenapVkFWjw9jmG

lib/pinball/tableLibrary.ts

@@ -0,0 +1,72 @@
+// Persists uploaded tables (and their optional ROM zip) in the browser via
+// IndexedDB, so a returning visitor can replay a table without re-uploading
+// it. Blobs are stored as-is (File objects are Blobs) rather than converted
+// to ArrayBuffer up front — IndexedDB clones Blobs without loading their
+// bytes into JS memory, so a large library doesn't sit resident until a
+// specific entry is actually played.
+
+const DB_NAME = "vpinball-library";
+const DB_VERSION = 1;
+const STORE = "tables";
+
+export interface LibraryEntry {
+  id: string;
+  name: string;
+  sizeBytes: number;
+  addedAt: number;
+  vpxBlob: Blob;
+  romFileName?: string;
+  romBlob?: Blob;
+}
+
+export type LibraryEntryMeta = Omit<LibraryEntry, "vpxBlob" | "romBlob">;
+
+function openDb(): Promise<IDBDatabase> {
+  return new Promise((resolve, reject) => {
+    const request = indexedDB.open(DB_NAME, DB_VERSION);
+    request.onupgradeneeded = () => {
+      request.result.createObjectStore(STORE, { keyPath: "id" });
+    };
+    request.onsuccess = () => resolve(request.result);
+    request.onerror = () => reject(request.error);
+  });
+}
+
+async function withStore<T>(mode: IDBTransactionMode, fn: (store: IDBObjectStore) => IDBRequest<T>): Promise<T> {
+  const db = await openDb();
+  try {
+    return await new Promise<T>((resolve, reject) => {
+      const tx = db.transaction(STORE, mode);
+      const request = fn(tx.objectStore(STORE));
+      request.onsuccess = () => resolve(request.result);
+      request.onerror = () => reject(request.error);
+    });
+  } finally {
+    db.close();
+  }
+}
+
+export async function saveToLibrary(entry: LibraryEntry): Promise<void> {
+  await withStore("readwrite", (store) => store.put(entry));
+}
+
+export async function listLibrary(): Promise<LibraryEntryMeta[]> {
+  const entries = await withStore<LibraryEntry[]>("readonly", (store) => store.getAll());
+  return entries
+    .map((entry): LibraryEntryMeta => ({
+      id: entry.id,
+      name: entry.name,
+      sizeBytes: entry.sizeBytes,
+      addedAt: entry.addedAt,
+      romFileName: entry.romFileName,
+    }))
+    .sort((a, b) => b.addedAt - a.addedAt);
+}
+
+export async function getLibraryEntry(id: string): Promise<LibraryEntry | undefined> {
+  return withStore<LibraryEntry | undefined>("readonly", (store) => store.get(id));
+}
+
+export async function deleteFromLibrary(id: string): Promise<void> {
+  await withStore("readwrite", (store) => store.delete(id));
+}