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

README.md

@@ -8,6 +8,11 @@ a WebAssembly build of the real [Visual Pinball](https://github.com/vpinball/vpi
 ## Features
 
 - **Play any self-contained `.vpx` table** — drag a file onto the landing page, or click to browse.
+- **ROM support for real-hardware ("SS") tables** — attach the table's PinMAME ROM `.zip` alongside
+  the `.vpx` upload; most tables don't need this.
+- **A local table library** — uploads are saved in the browser (IndexedDB) so you don't have to
+  re-upload the same table (and its ROM) on your next visit. Nothing leaves your browser; there's
+  no server-side storage.
 - **Demo mode** — a bundled table plays instantly with no upload required.
 - **Fullscreen**, a live **FPS/stats** readout, and a **game info** panel (table name, size, load
   time) in an in-game HUD styled after a pinball cabinet's coin door.
@@ -88,10 +93,11 @@ pnpm run sw:bump
 
 | Key            | Action        |
 | -------------- | ------------- |
+| 4              | Insert coin   |
+| 1              | Start game    |
+| Enter          | Launch ball   |
 | Left Shift     | Left flipper  |
 | Right Shift    | Right flipper |
-| Enter          | Plunger       |
-| 1              | Start game    |
 
 On touch devices, an on-screen control overlay appears automatically once a table is running.
 
@@ -101,12 +107,19 @@ Inherited from the underlying engine:
 
 - Only self-contained `.vpx` tables are supported — tables that reference an external `.vbs`
   script override or a `Music/` folder won't load correctly.
-- No PinMAME, DOF, or FlexDMD plugin support.
+- PinMAME (`VPinMAME.Controller`) ROM-driven emulation runs, but on-screen DMD/backglass output
+  and hands-on switch/solenoid/scoring behavior aren't yet confirmed end-to-end — see the engine's
+  own README for the current state. No DOF, FlexDMD, or backglass (`.directb2s`) plugin support.
+  ROM files are copyrighted; only supply ones you're legally entitled to use.
+- The ROM `gameName` PinMAME needs is derived from the uploaded zip's filename (e.g.
+  `hvymetal.zip` → `hvymetal`) — rename the zip to match if a table doesn't recognize its ROM.
 - Single-threaded (no `SharedArrayBuffer`) — performance depends on your device's single-core
   WebGL2 throughput.
 - Initial engine download is ~34 MB (cached after the first visit).
 - Gamepad input and DMD rendering are implemented but not yet confirmed on real hardware/tables.
 - Raw cabinet hardware input (real nudge/plunger boards) has no browser equivalent.
+- The table library lives in the browser's IndexedDB storage — clearing site data removes it, and
+  it doesn't sync across browsers/devices.
 
 ## License