Mobile zoom always comes back

The iPhone app now preserves both directions of a pinch gesture. If the screen is enlarged accidentally, pinching out returns Miracle to its normal scale instead of leaving the interface stranded.

• The native Capacitor shell explicitly enables reversible WKWebView zoom.
• Browser and PWA accessibility zoom remain available.
• The app and widget advance together to native build 3.
• New native contracts prevent the one-way zoom setting or mismatched build numbers from returning.
• A fresh iPhone simulator build installed and launched successfully.

Superseded by v5.8.22: Installed mobile page zoom is now intentionally disabled in both the PWA and iPhone app.