iOS: presses are felt (#430)

The page asks the app for a haptic ({t:"haptic", kind}) and the app
plays the phone's own. A light tap for play, pause, flag and pull to
refresh; the system's success for marking read, one item or all; its
warning with an error toast. A browser has no host to ask, and an
older app ignores the message, so there is nothing to gate.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/native-bridge.ts

@@ -170,6 +170,11 @@ since();
 vm.runInContext('sleepIn(0)', ctx);
 ok(last('sleep')?.secs === 0, 'turning the timer off did not reach the app');
 
+// Haptics (#430): the page asks, the phone does.
+since();
+vm.runInContext('toast("Unable to play", true)', ctx);
+ok(last('haptic')?.kind === 'warn', 'an error was not felt');
+
 if (failed) { console.error(`\n${failed} failed`); process.exit(1); }
-console.log('OK: native-bridge: the host takes playback, keeping and the sleep timer, and the page follows it');
+console.log('OK: native-bridge: the host takes playback, keeping, the sleep timer and haptics, and the page follows it');
 process.exit(0);