Fix View updates on Android: bundled notes, portal stack, tap handling.

Bundle update markdown at build time for Capacitor, portal into
portalContainer above Settings, defer open to avoid FocusTrap closing
on the same tap, and disable click-outside dismiss.

src/app/components/updates-dialog/UpdatesDialog.css.ts

@@ -7,6 +7,7 @@ export const PortalLayer = style({
   position: 'fixed',
   inset: 0,
   zIndex: config.zIndex.Max,
+  pointerEvents: 'auto',
 });
 
 /** Dialog + overlay padding must never exceed the viewport height. */