Fix flickering issues due to reconnecting loop

lib/providers/tasks_provider.dart

@@ -526,6 +526,30 @@ List<Map<String, dynamic>> _processTasksInIsolate(
 /// Provider for task query parameters.
 final tasksQueryProvider = StateProvider<TaskQuery>((ref) => const TaskQuery());
 
+/// Derived provider that selects a single [Task] by ID from the tasks list.
+///
+/// Because [Task] implements `==`, this provider only notifies watchers when
+/// the specific task's data actually changes — not when unrelated tasks in the
+/// list are updated.  Use this in detail screens to avoid full-list rebuilds.
+final taskByIdProvider = Provider.family<Task?, String>((ref, taskId) {
+  return ref
+      .watch(tasksProvider)
+      .valueOrNull
+      ?.where((t) => t.id == taskId)
+      .firstOrNull;
+});
+
+/// Derived provider that selects a [Task] linked to a given ticket ID.
+///
+/// Returns the first task whose `ticketId` matches [ticketId], or null.
+final taskByTicketIdProvider = Provider.family<Task?, String>((ref, ticketId) {
+  return ref
+      .watch(tasksProvider)
+      .valueOrNull
+      ?.where((t) => t.ticketId == ticketId)
+      .firstOrNull;
+});
+
 final taskAssignmentsProvider = StreamProvider<List<TaskAssignment>>((ref) {
   final client = ref.watch(supabaseClientProvider);