fix(app,learn,meditate): a device without speech recognition says so, and how to get one

On GrapheneOS, which installs no recogniser, the microphone did nothing
and stayed listening: speech_to_text's initialize throws a
PlatformException (recognizerNotAvailable) there rather than answering
false, and DeviceSpeechInput let it through. A listen now answers how it
went (SpeechStart: listening, noRecognizer, unavailable) and never
throws; Learn's field and Meditate's dream say that no speech
recognition is installed and name two to install (FUTO Voice Input,
Google's speech services), in halkyon_app's texts. It also passes
androidNoBluetooth, as the apps declare no Bluetooth permission the
plugin would otherwise ask for.

Whats-New: Where the device has no speech recognition, the microphone says so and how to get one.
Whats-New-De: Wo das Gerät keine Spracherkennung hat, sagt das Mikrofon das und wie du eine bekommst.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>

apps/learn/halkyon_learn_flutter/lib/src/feature/assistant/widget/composer.dart

@@ -372,6 +372,7 @@ class _SpeakOrSendState() extends State<SpeakOrSend> {
   Future<void> _listen() async {
     final messenger = ScaffoldMessenger.of(context);
     final l10n = AppLocalizations.of(context);
+    final words = HalkyonAppLocalizations.of(context);
     final before = widget.controller.text.trimRight();
     _before = before.isEmpty ? '' : '$before ';
     setState(() => _listening = true);
@@ -392,10 +393,15 @@ class _SpeakOrSendState() extends State<SpeakOrSend> {
         }
       },
     );
-    if (!listens && mounted) {
+    if (!listens.listens && mounted) {
       setState(() => _listening = false);
       messenger.showSnackBar(
-        SnackBar(content: Text(l10n.assistantSpeechUnavailable)),
+        SnackBar(
+          content: Text(switch (listens) {
+            SpeechStart.noRecognizer => words.speechNoRecognizer,
+            _ => l10n.assistantSpeechUnavailable,
+          }),
+        ),
       );
     }
   }

apps/learn/halkyon_learn_flutter/test/feature/assistant/assistant_field_test.dart

@@ -380,6 +380,23 @@ void main() {
     expect(onDevice, ['what does 火 mean']);
   });
 
+  testWidgets('says so where no speech recognition is installed, and how '
+      'to get one, never stuck listening (GrapheneOS, 4 Nov 2026)', (
+    tester,
+  ) async {
+    speech.hasRecognizer = false;
+    await showApp(tester);
+    await unfold(tester);
+    await tester.tap(find.byTooltip('Speak your question'));
+    await tester.pump();
+    expect(
+      find.textContaining('no speech recognition installed'),
+      findsOneWidget,
+    );
+    expect(find.byTooltip('Stop listening'), findsNothing);
+    expect(find.byTooltip('Speak your question'), findsOneWidget);
+  });
+
   testWidgets("says so where the device can't listen, and shows no "
       'microphone where nothing recognises speech (D67)', (tester) async {
     speech.listens = false;

apps/meditate/halkyon_meditate_flutter/lib/src/core/device/no_speech.dart

@@ -8,11 +8,11 @@ class const NoSpeechInput() implements SpeechInput {
   bool get supported => false;
 
   @override
-  Future<bool> listen({
+  Future<SpeechStart> listen({
     required String? language,
     required ValueChanged<String> onWords,
     required VoidCallback onDone,
-  }) async => false;
+  }) async => SpeechStart.unavailable;
 
   @override
   Future<void> stop() async {}

apps/meditate/halkyon_meditate_flutter/lib/src/feature/journal/widget/dream_screen.dart

@@ -91,13 +91,18 @@ class _DreamScreenState() extends State<DreamScreen> {
   /// it), saying so where the device can't.
   Future<void> _dictate() async {
     final l10n = AppLocalizations.of(context);
+    final words = HalkyonAppLocalizations.of(context);
     final messenger = ScaffoldMessenger.of(context);
-    if (!await _dictation.start(
+    final problem = switch (await _dictation.start(
       language: Localizations.localeOf(context).toLanguageTag(),
     )) {
-      messenger.showSnackBar(
-        SnackBar(content: Text(l10n.dreamSpeechUnavailable)),
-      );
+      SpeechStart.listening => null,
+      // A phone without Google's services has no recogniser to listen with.
+      SpeechStart.noRecognizer => words.speechNoRecognizer,
+      SpeechStart.unavailable => l10n.dreamSpeechUnavailable,
+    };
+    if (problem != null) {
+      messenger.showSnackBar(SnackBar(content: Text(problem)));
     }
   }
 

apps/meditate/halkyon_meditate_flutter/test/app/meditate_app_test.dart

@@ -1067,6 +1067,17 @@ void main() {
       expect(find.byTooltip('Dictate'), findsOneWidget);
     });
 
+    testWidgets('where no speech recognition is installed, it says so and '
+        'how to get one', (tester) async {
+      speech.hasRecognizer = false;
+      await newDream(tester);
+      await tester.tap(find.byTooltip('Dictate'));
+      await tester.pumpAndSettle();
+
+      expect(find.textContaining('FUTO Voice Input'), findsOneWidget);
+      expect(find.byTooltip('Dictate'), findsOneWidget, reason: 'not stuck');
+    });
+
     testWidgets('where the device recognises no speech, there is no '
         'microphone, here or on Today', (tester) async {
       speech.supported = false;