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/keyBindings.ts

@@ -4,8 +4,9 @@ export interface KeyBinding {
 }
 
 export const KEY_BINDINGS: KeyBinding[] = [
+  { keys: "4", action: "Insert coin" },
+  { keys: "1", action: "Start game" },
+  { keys: "Enter", action: "Launch ball" },
   { keys: "Left Shift", action: "Left flipper" },
   { keys: "Right Shift", action: "Right flipper" },
-  { keys: "Enter", action: "Plunger" },
-  { keys: "1", action: "Start game" },
 ];