improvement: updated toasts. no invisible toast anymore.

frontend/src/components/ui/treatment/TreatmentWorkspace.tsx

@@ -9,7 +9,6 @@ import { LabCasesDispatchPanel } from '@/components/ui/treatment/LabCasesDispatc
 import { PastTreatmentsPanel } from '@/components/ui/treatment/PastTreatmentsPanel';
 import { TreatmentDetailsEditor } from '@/components/ui/treatment/TreatmentDetailsEditor';
 import { TreatmentPreviewCard } from '@/components/ui/treatment/TreatmentPreviewCard';
-import { ToastStack } from '@/components/ui/shared/Toast';
 import { treatmentTypeLabelFromCatalog, treatmentTypeColor } from '@/components/shared/treatmentTypeDisplay';
 import {
   addCalendarDays,
@@ -1139,8 +1138,6 @@ export function TreatmentWorkspace({
         </p>
       </header>
 
-      <ToastStack {...toastMessages} />
-
       <AppointmentsStrip
         stripHidden={stripHidden}
         onToggleStripHidden={() => setStripHidden((s) => !s)}