feat: speech-to-text for free text field

app/android/app/src/main/AndroidManifest.xml

@@ -2,6 +2,7 @@
 
     <uses-permission android:name="android.permission.INTERNET"/>
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
+    <uses-permission android:name="android.permission.RECORD_AUDIO"/>
 
     <!-- Begin flutter_local_notifications -->
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>

app/ios/Runner/Info.plist

@@ -43,6 +43,8 @@
 			<key>NSAllowsArbitraryLoads</key>
 			<true/>
 		</dict>
+		<key>NSMicrophoneUsageDescription</key>
+		<string>Need microphone access for speech input and study recordings.</string>
 		<key>NSCameraUsageDescription</key>
 		<string>Need to access your camera to capture a photo for trial observations.</string>
 		<key>UIApplicationSupportsIndirectInputEvents</key>

app/lib/l10n/app_de.arb

@@ -242,6 +242,7 @@
       }
     }
   },
+  "free_text_answer_hint": "Geben Sie Ihre Antwort hier ein...",
   "app_outdated_message": "Eine neue Version der StudyU App ist verfügbar. Bitte führen Sie eine Aktualisierung durch, um die neuesten Funktionen und Verbesserungen zu erhalten. Vielen Dank für Ihre Unterstützung!",
   "update_now": "Jetzt aktualisieren",
 
@@ -455,5 +456,33 @@
   "preview_mode_description": "Sie befinden sich derzeit im Vorschau-Modus. Dies ermöglicht Ihnen:\n\n• Schneller Vorlauf durch Studientage mit der \"Nächster Tag\" Schaltfläche\n• Mehrfaches Abschließen von Aufgaben ohne Einschränkungen\n• Erleben des vollständigen Studienablaufs ohne Beeinflussung echter Daten\n\nWichtig: Ergebnisse und Daten aus dem Vorschau-Modus werden nicht gespeichert oder mit tatsächlichen Teilnehmerergebnissen aus laufenden Studien vermischt.",
   "preview_mode_results_not_saved": "Ergebnisse werden zum Schutz der Studienintegrität nicht gespeichert.",
   "ok": "OK",
-  "submit" : "Absenden"
+  "submit" : "Absenden",
+  "speech_to_text_title": "Sprach-zu-Text",
+  "speech_to_text_description": "Diktiere Antworten mit der integrierten Spracherkennung deines Geräts. Die Verarbeitung übernimmt der Plattformdienst.",
+  "speech_to_text_enable_label": "Sprach­eingabe aktivieren",
+  "speech_to_text_enable_hint": "Tippen funktioniert weiterhin, falls das Mikrofon blockiert ist.",
+  "speech_to_text_language_label": "Bevorzugte Transkriptionssprache",
+  "speech_to_text_language_english": "Englisch",
+  "speech_to_text_language_german": "Deutsch",
+  "speech_to_text_not_enabled": "Die Sprach­eingabe bleibt deaktiviert, bis du sie einschaltest.",
+  "speech_to_text_not_enabled_brief": "Sprach­eingabe ist für dein Konto ausgeschaltet.",
+  "speech_to_text_go_to_settings": "In den Einstellungen verwalten",
+  "speech_to_text_unsupported": "Sprach­eingabe ist auf diesem Gerät nicht verfügbar.",
+  "speech_to_text_error_permission": "Bitte erlaube den Mikrofonzugriff, um diktieren zu können.",
+  "speech_to_text_error_general": "Sprach­eingabe fehlgeschlagen. Bitte erneut versuchen.",
+  "speech_to_text_error_connection": "Verbindung verloren. Bitte erneut versuchen.",
+  "speech_to_text_preparing": "Spracherkennung wird vorbereitet…",
+  "speech_to_text_live_caption_hint": "Live-Transkription",
+  "speech_to_text_listening": "Es wird zugehört…",
+  "speech_to_text_press_to_speak": "Zum Sprechen drücken",
+  "speech_to_text_idle": "Sprach­eingabe starten",
+  "speech_to_text_stop_listening": "Zuhören stoppen",
+  "speech_to_text_opt_out_action": "Sprach­eingabe deaktivieren",
+  "speech_to_text_enable_short_label": "Wieder aktivieren",
+  "speech_to_text_language_badge": "{language}",
+  "@speech_to_text_language_badge": {
+    "placeholders": {
+      "language": {}
+    }
+  }
 }

app/lib/l10n/app_en.arb

@@ -238,6 +238,7 @@
       }
     }
   },
+  "free_text_answer_hint": "Type your answer here...",
   "app_outdated_message": "A new version of the StudyU App is available. Please update to get the latest features and improvements. Thank you for your support!",
   "update_now": "Update now",
 
@@ -451,5 +452,33 @@
   "preview_mode_description": "You are currently in preview mode. This allows you to:\n\n• Fast-forward through study days using the \"Next Day\" button\n• Complete tasks multiple times without restrictions\n• Experience the full study flow without affecting real data\n\nImportant: Results and data from preview mode are not stored or mixed with actual participant results from running studies.",
   "preview_mode_results_not_saved": "Task completed in preview mode - results are not saved to protect study data integrity.",
   "ok": "OK",
-  "submit" : "Submit"
+  "submit" : "Submit",
+  "speech_to_text_title": "Speech to text",
+  "speech_to_text_description": "Dictate answers with your device's built-in speech recognition. Audio always stays with the platform service.",
+  "speech_to_text_enable_label": "Enable speech input",
+  "speech_to_text_enable_hint": "Typing continues to work even if the microphone is unavailable.",
+  "speech_to_text_language_label": "Preferred transcription language",
+  "speech_to_text_language_english": "English",
+  "speech_to_text_language_german": "German",
+  "speech_to_text_not_enabled": "Speech input stays disabled until you turn it on.",
+  "speech_to_text_not_enabled_brief": "Speech input is currently turned off for your account.",
+  "speech_to_text_go_to_settings": "Manage in Settings",
+  "speech_to_text_unsupported": "Speech input is unavailable on this device.",
+  "speech_to_text_error_permission": "Microphone permission is required for speech input.",
+  "speech_to_text_error_general": "Speech input failed. Please try again.",
+  "speech_to_text_error_connection": "Connection lost. Please try again.",
+  "speech_to_text_preparing": "Preparing speech recognizer…",
+  "speech_to_text_live_caption_hint": "Live transcription",
+  "speech_to_text_listening": "Listening…",
+  "speech_to_text_press_to_speak": "Press to speak",
+  "speech_to_text_idle": "Start speech input",
+  "speech_to_text_stop_listening": "Stop listening",
+  "speech_to_text_opt_out_action": "Disable speech input for now",
+  "speech_to_text_enable_short_label": "Enable again",
+  "speech_to_text_language_badge": "{language}",
+  "@speech_to_text_language_badge": {
+    "placeholders": {
+      "language": {}
+    }
+  }
 }

app/lib/l10n/app_localizations.dart

@@ -1178,6 +1178,12 @@ abstract class AppLocalizations {
   /// **'Please enter only characters matching the pattern {pattern}'**
   String free_text_custom_error(String pattern);
 
+  /// No description provided for @free_text_answer_hint.
+  ///
+  /// In en, this message translates to:
+  /// **'Type your answer here...'**
+  String get free_text_answer_hint;
+
   /// No description provided for @app_outdated_message.
   ///
   /// In en, this message translates to:
@@ -2251,6 +2257,144 @@ abstract class AppLocalizations {
   /// In en, this message translates to:
   /// **'Submit'**
   String get submit;
+
+  /// No description provided for @speech_to_text_title.
+  ///
+  /// In en, this message translates to:
+  /// **'Speech to text'**
+  String get speech_to_text_title;
+
+  /// No description provided for @speech_to_text_description.
+  ///
+  /// In en, this message translates to:
+  /// **'Dictate answers with your device\'s built-in speech recognition. Audio always stays with the platform service.'**
+  String get speech_to_text_description;
+
+  /// No description provided for @speech_to_text_enable_label.
+  ///
+  /// In en, this message translates to:
+  /// **'Enable speech input'**
+  String get speech_to_text_enable_label;
+
+  /// No description provided for @speech_to_text_enable_hint.
+  ///
+  /// In en, this message translates to:
+  /// **'Typing continues to work even if the microphone is unavailable.'**
+  String get speech_to_text_enable_hint;
+
+  /// No description provided for @speech_to_text_language_label.
+  ///
+  /// In en, this message translates to:
+  /// **'Preferred transcription language'**
+  String get speech_to_text_language_label;
+
+  /// No description provided for @speech_to_text_language_english.
+  ///
+  /// In en, this message translates to:
+  /// **'English'**
+  String get speech_to_text_language_english;
+
+  /// No description provided for @speech_to_text_language_german.
+  ///
+  /// In en, this message translates to:
+  /// **'German'**
+  String get speech_to_text_language_german;
+
+  /// No description provided for @speech_to_text_not_enabled.
+  ///
+  /// In en, this message translates to:
+  /// **'Speech input stays disabled until you turn it on.'**
+  String get speech_to_text_not_enabled;
+
+  /// No description provided for @speech_to_text_not_enabled_brief.
+  ///
+  /// In en, this message translates to:
+  /// **'Speech input is currently turned off for your account.'**
+  String get speech_to_text_not_enabled_brief;
+
+  /// No description provided for @speech_to_text_go_to_settings.
+  ///
+  /// In en, this message translates to:
+  /// **'Manage in Settings'**
+  String get speech_to_text_go_to_settings;
+
+  /// No description provided for @speech_to_text_unsupported.
+  ///
+  /// In en, this message translates to:
+  /// **'Speech input is unavailable on this device.'**
+  String get speech_to_text_unsupported;
+
+  /// No description provided for @speech_to_text_error_permission.
+  ///
+  /// In en, this message translates to:
+  /// **'Microphone permission is required for speech input.'**
+  String get speech_to_text_error_permission;
+
+  /// No description provided for @speech_to_text_error_general.
+  ///
+  /// In en, this message translates to:
+  /// **'Speech input failed. Please try again.'**
+  String get speech_to_text_error_general;
+
+  /// No description provided for @speech_to_text_error_connection.
+  ///
+  /// In en, this message translates to:
+  /// **'Connection lost. Please try again.'**
+  String get speech_to_text_error_connection;
+
+  /// No description provided for @speech_to_text_preparing.
+  ///
+  /// In en, this message translates to:
+  /// **'Preparing speech recognizer…'**
+  String get speech_to_text_preparing;
+
+  /// No description provided for @speech_to_text_live_caption_hint.
+  ///
+  /// In en, this message translates to:
+  /// **'Live transcription'**
+  String get speech_to_text_live_caption_hint;
+
+  /// No description provided for @speech_to_text_listening.
+  ///
+  /// In en, this message translates to:
+  /// **'Listening…'**
+  String get speech_to_text_listening;
+
+  /// No description provided for @speech_to_text_press_to_speak.
+  ///
+  /// In en, this message translates to:
+  /// **'Press to speak'**
+  String get speech_to_text_press_to_speak;
+
+  /// No description provided for @speech_to_text_idle.
+  ///
+  /// In en, this message translates to:
+  /// **'Start speech input'**
+  String get speech_to_text_idle;
+
+  /// No description provided for @speech_to_text_stop_listening.
+  ///
+  /// In en, this message translates to:
+  /// **'Stop listening'**
+  String get speech_to_text_stop_listening;
+
+  /// No description provided for @speech_to_text_opt_out_action.
+  ///
+  /// In en, this message translates to:
+  /// **'Disable speech input for now'**
+  String get speech_to_text_opt_out_action;
+
+  /// No description provided for @speech_to_text_enable_short_label.
+  ///
+  /// In en, this message translates to:
+  /// **'Enable again'**
+  String get speech_to_text_enable_short_label;
+
+  /// No description provided for @speech_to_text_language_badge.
+  ///
+  /// In en, this message translates to:
+  /// **'{language}'**
+  String speech_to_text_language_badge(Object language);
 }
 
 class _AppLocalizationsDelegate

app/lib/l10n/app_localizations_de.dart

@@ -607,6 +607,9 @@ class AppLocalizationsDe extends AppLocalizations {
     return 'Bitte geben Sie nur Zeichen ein, die dem Muster $pattern entsprechen';
   }
 
+  @override
+  String get free_text_answer_hint => 'Geben Sie Ihre Antwort hier ein...';
+
   @override
   String get app_outdated_message =>
       'Eine neue Version der StudyU App ist verfügbar. Bitte führen Sie eine Aktualisierung durch, um die neuesten Funktionen und Verbesserungen zu erhalten. Vielen Dank für Ihre Unterstützung!';
@@ -1166,4 +1169,84 @@ class AppLocalizationsDe extends AppLocalizations {
 
   @override
   String get submit => 'Absenden';
+
+  @override
+  String get speech_to_text_title => 'Sprach-zu-Text';
+
+  @override
+  String get speech_to_text_description =>
+      'Diktiere Antworten mit der integrierten Spracherkennung deines Geräts. Die Verarbeitung übernimmt der Plattformdienst.';
+
+  @override
+  String get speech_to_text_enable_label => 'Sprach­eingabe aktivieren';
+
+  @override
+  String get speech_to_text_enable_hint =>
+      'Tippen funktioniert weiterhin, falls das Mikrofon blockiert ist.';
+
+  @override
+  String get speech_to_text_language_label =>
+      'Bevorzugte Transkriptionssprache';
+
+  @override
+  String get speech_to_text_language_english => 'Englisch';
+
+  @override
+  String get speech_to_text_language_german => 'Deutsch';
+
+  @override
+  String get speech_to_text_not_enabled =>
+      'Die Sprach­eingabe bleibt deaktiviert, bis du sie einschaltest.';
+
+  @override
+  String get speech_to_text_not_enabled_brief =>
+      'Sprach­eingabe ist für dein Konto ausgeschaltet.';
+
+  @override
+  String get speech_to_text_go_to_settings => 'In den Einstellungen verwalten';
+
+  @override
+  String get speech_to_text_unsupported =>
+      'Sprach­eingabe ist auf diesem Gerät nicht verfügbar.';
+
+  @override
+  String get speech_to_text_error_permission =>
+      'Bitte erlaube den Mikrofonzugriff, um diktieren zu können.';
+
+  @override
+  String get speech_to_text_error_general =>
+      'Sprach­eingabe fehlgeschlagen. Bitte erneut versuchen.';
+
+  @override
+  String get speech_to_text_error_connection =>
+      'Verbindung verloren. Bitte erneut versuchen.';
+
+  @override
+  String get speech_to_text_preparing => 'Spracherkennung wird vorbereitet…';
+
+  @override
+  String get speech_to_text_live_caption_hint => 'Live-Transkription';
+
+  @override
+  String get speech_to_text_listening => 'Es wird zugehört…';
+
+  @override
+  String get speech_to_text_press_to_speak => 'Zum Sprechen drücken';
+
+  @override
+  String get speech_to_text_idle => 'Sprach­eingabe starten';
+
+  @override
+  String get speech_to_text_stop_listening => 'Zuhören stoppen';
+
+  @override
+  String get speech_to_text_opt_out_action => 'Sprach­eingabe deaktivieren';
+
+  @override
+  String get speech_to_text_enable_short_label => 'Wieder aktivieren';
+
+  @override
+  String speech_to_text_language_badge(Object language) {
+    return '$language';
+  }
 }