Auto Task Assignment

lib/screens/tickets/ticket_detail_screen.dart

@@ -482,7 +482,9 @@ class _TicketDetailScreenState extends ConsumerState<TicketDetailScreen> {
     if (!canSendMessages) return;
     final content = _messageController.text.trim();
     if (content.isEmpty) return;
-    ref.read(typingIndicatorProvider(widget.ticketId).notifier).stopTyping();
+
+    _maybeTypingController(widget.ticketId)?.stopTyping();
+
     final message = await ref
         .read(ticketsControllerProvider)
         .sendTicketMessage(ticketId: widget.ticketId, content: content);
@@ -533,11 +535,11 @@ class _TicketDetailScreenState extends ConsumerState<TicketDetailScreen> {
     bool canSendMessages,
   ) {
     if (!canSendMessages) {
-      ref.read(typingIndicatorProvider(widget.ticketId).notifier).stopTyping();
+      _maybeTypingController(widget.ticketId)?.stopTyping();
       _clearMentions();
       return;
     }
-    ref.read(typingIndicatorProvider(widget.ticketId).notifier).userTyping();
+    _maybeTypingController(widget.ticketId)?.userTyping();
     final text = _messageController.text;
     final cursor = _messageController.selection.baseOffset;
     if (cursor < 0) {
@@ -585,6 +587,18 @@ class _TicketDetailScreenState extends ConsumerState<TicketDetailScreen> {
     });
   }
 
+  // Safely obtain the typing controller for [ticketId].
+  TypingIndicatorController? _maybeTypingController(String ticketId) {
+    try {
+      final controller = ref.read(typingIndicatorProvider(ticketId).notifier);
+      return controller.mounted ? controller : null;
+    } on StateError {
+      return null;
+    } catch (_) {
+      return null;
+    }
+  }
+
   bool _isWhitespace(String char) {
     return char.trim().isEmpty;
   }