Merge pull request 'STT context, refresh improvements, calendar timezone fix' (#16) from dev into main

lib/app.dart

@@ -193,7 +193,7 @@ class _ShellState extends ConsumerState<_Shell> with WidgetsBindingObserver {
   ];
 
   // Minimum gap between app-resume refreshes to avoid hammering the server.
-  static const _resumeCooldown = Duration(minutes: 5);
+  static const _resumeCooldown = Duration(seconds: 30);
   DateTime? _lastResumeRefresh;
   int? _prevTabIndex;
 

lib/data/api/voice_api.dart

@@ -40,16 +40,20 @@ class VoiceApi {
   }
 
   /// POST WebM/Opus audio bytes and return the transcript string.
+  /// [context] is optional recent conversation text passed as initial_prompt
+  /// to Whisper, reducing mishearings of domain-specific words.
   /// Returns empty string on empty or error response.
-  Future<String> transcribe(Uint8List audioBytes) async {
+  Future<String> transcribe(Uint8List audioBytes, {String? context}) async {
     try {
-      final formData = FormData.fromMap({
+      final fields = <String, dynamic>{
         'audio': MultipartFile.fromBytes(
           audioBytes,
           filename: 'audio.m4a',
           contentType: DioMediaType('audio', 'mp4'),
         ),
-      });
+        if (context != null && context.isNotEmpty) 'context': context,
+      };
+      final formData = FormData.fromMap(fields);
       final response = await _dio.post(
         '/api/voice/transcribe',
         data: formData,

lib/data/repositories/voice_repository.dart

@@ -7,6 +7,7 @@ class VoiceRepository {
   const VoiceRepository(this._api);
 
   Future<VoiceStatus> checkStatus() => _api.checkStatus();
-  Future<String> transcribe(Uint8List audioBytes) => _api.transcribe(audioBytes);
+  Future<String> transcribe(Uint8List audioBytes, {String? context}) =>
+      _api.transcribe(audioBytes, context: context);
   Future<Uint8List> synthesise(String text) => _api.synthesise(text);
 }

lib/providers/voice_provider.dart

@@ -108,6 +108,10 @@ class VoiceNotifier extends Notifier<VoiceState> {
   int _lastSeenLength = 0;
   bool _streamComplete = false;
 
+  // Last complete assistant response — passed to Whisper as initial_prompt
+  // to reduce STT mishearings of domain-specific words.
+  String _lastAssistantContent = '';
+
   // TTS playback queue
   final _ttsQueue = Queue<Uint8List>();
   bool _ttsPlaying = false;
@@ -205,6 +209,7 @@ class VoiceNotifier extends Notifier<VoiceState> {
     _dispatchSentences(flush: isComplete);
 
     if (isComplete) {
+      _lastAssistantContent = fullContent;
       _streamComplete = true;
       _checkRestartListening();
     }
@@ -278,8 +283,10 @@ class VoiceNotifier extends Notifier<VoiceState> {
 
       if (!state.voiceModeActive) return;
 
-      final transcript =
-          await ref.read(voiceRepositoryProvider).transcribe(bytes);
+      final transcript = await ref.read(voiceRepositoryProvider).transcribe(
+            bytes,
+            context: _lastAssistantContent.isNotEmpty ? _lastAssistantContent : null,
+          );
 
       if (!state.voiceModeActive) return;
 

lib/screens/calendar/calendar_screen.dart

@@ -67,12 +67,15 @@ class CalendarScreen extends ConsumerWidget {
             ),
             const Divider(height: 1),
             Expanded(
+              child: RefreshIndicator(
+                onRefresh: () async => ref.invalidate(calendarProvider),
                 child: _AgendaList(
                   events:
                       cal.eventsByDay[dateOnly(cal.selectedDay)] ?? [],
                   notifier: notifier,
                 ),
               ),
+            ),
           ],
         ),
       ),
@@ -106,7 +109,12 @@ class _AgendaList extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     if (events.isEmpty) {
-      return const Center(child: Text('No events'));
+      return ListView(
+        children: const [
+          SizedBox(height: 80),
+          Center(child: Text('No events')),
+        ],
+      );
     }
     return ListView.builder(
       padding: const EdgeInsets.symmetric(vertical: 8),

lib/screens/chat/chat_screen.dart

@@ -16,12 +16,27 @@ class ChatScreen extends ConsumerStatefulWidget {
   ConsumerState<ChatScreen> createState() => _ChatScreenState();
 }
 
-class _ChatScreenState extends ConsumerState<ChatScreen> {
+class _ChatScreenState extends ConsumerState<ChatScreen>
+    with WidgetsBindingObserver {
   final _controller = TextEditingController();
   final _scrollController = ScrollController();
 
+  @override
+  void initState() {
+    super.initState();
+    WidgetsBinding.instance.addObserver(this);
+  }
+
+  @override
+  void didChangeAppLifecycleState(AppLifecycleState state) {
+    if (state == AppLifecycleState.resumed) {
+      ref.invalidate(messagesProvider(widget.conversationId));
+    }
+  }
+
   @override
   void dispose() {
+    WidgetsBinding.instance.removeObserver(this);
     _controller.dispose();
     _scrollController.dispose();
     // Exit voice mode if the user navigates away mid-session.

lib/screens/news/news_screen.dart

@@ -96,6 +96,8 @@ class _NewsScreenState extends ConsumerState<NewsScreen> {
             ),
             const Divider(height: 1),
             Expanded(
+              child: RefreshIndicator(
+                onRefresh: () async => ref.invalidate(newsProvider),
                 child: ListView.builder(
                 padding:
                     const EdgeInsets.symmetric(horizontal: 8, vertical: 8),
@@ -129,6 +131,7 @@ class _NewsScreenState extends ConsumerState<NewsScreen> {
                 },
               ),
               ),
+            ),
           ],
         ),
       ),