improvement: updated toasts. no invisible toast anymore.

.cursor/rules/frontend-components.mdc

@@ -40,6 +40,12 @@ Reference: `app/.../treatment/page.tsx` + `components/ui/treatment/TreatmentWork
 - API clients: `lib/api/`.
 - Catch blocks: `getUserFacingError(err, tErrors, fallback)` from `components/shared/formatApiError.ts`.
 
+## Toasts
+
+- Use `useToast()` for transient page feedback — rendered globally by `ToastProvider` in dashboard layout (fixed bottom, above dialogs).
+- Do **not** add `<ToastStack />` inside pages or dialogs.
+- Form/dialog validation: inline error text near the field or submit button, not a toast.
+
 ## When adding UI
 
 1. Check `components/ui/shared/` for an existing primitive.

frontend/src/app/[locale]/(dashboard)/layout.tsx

@@ -8,6 +8,7 @@ import { useAuth } from '@/lib/hooks/useAuth';
 import Sidebar from '@/components/ui/shared/Sidebar';
 import { TopBarControls } from '@/components/ui/shared/TopBarControls';
 import { DashboardAccountMenu } from '@/components/ui/dashboard/DashboardAccountMenu';
+import { ToastProvider } from '@/components/ui/shared/ToastProvider';
 import {
   canAccessDashboardRoute,
   firstAccessibleDashboardPath,
@@ -70,7 +71,8 @@ export default function DashboardLayout({ children }: { children: React.ReactNod
   }
 
   return (
-    <div className="flex h-[100dvh] app-web-bg text-text-primary">
+    <ToastProvider>
+      <div className="flex h-[100dvh] app-web-bg text-text-primary">
       {sidebarOpen ? (
         <button
           type="button"
@@ -94,7 +96,8 @@ export default function DashboardLayout({ children }: { children: React.ReactNod
           </div>
         </main>
       </div>
-    </div>
+      </div>
+    </ToastProvider>
   );
 }
 

frontend/src/components/ui/appointments/AppointmentsPage.tsx

@@ -17,7 +17,6 @@ import { AppointmentScheduleGrid } from '@/components/ui/appointments/Appointmen
 import { AppointmentsPatientSearch } from '@/components/ui/appointments/AppointmentsPatientSearch';
 import { AppointmentScheduleLegend } from '@/components/ui/appointments/AppointmentScheduleLegend';
 import { ScheduleDayPicker } from '@/components/ui/shared/ScheduleDayPicker';
-import { ToastStack } from '@/components/ui/shared/Toast';
 import { useToast } from '@/lib/hooks/useToast';
 import type { AppointmentPurpose } from '@/types/appointment';
 import { getUserFacingError } from '@/components/shared/formatApiError';
@@ -286,8 +285,6 @@ export function AppointmentsPage() {
         <p className="text-sm text-text-secondary">{t('subtitle')}</p>
       </div>
 
-      <ToastStack {...toast.messages} />
-
       <div className="grid grid-cols-1 xl:grid-cols-3 gap-6">
         <div className="xl:col-span-1 space-y-4">
           <AppointmentsPatientSearch

frontend/src/components/ui/lab/CasesPage.tsx

@@ -3,7 +3,6 @@
 import { useCallback, useEffect, useMemo, useState } from 'react';
 import { useSearchParams } from 'next/navigation';
 import { useTranslations } from 'next-intl';
-import { ToastStack } from '@/components/ui/shared/Toast';
 import { getUserFacingError } from '@/components/shared/formatApiError';
 import { useAuth } from '@/lib/hooks/useAuth';
 import { useToast } from '@/lib/hooks/useToast';
@@ -466,7 +465,6 @@ export function CasesPage() {
         </section>
       </div>
 
-      <ToastStack {...toast.messages} />
     </div>
   );
 }

frontend/src/components/ui/lab/TasksPage.tsx

@@ -3,7 +3,6 @@
 import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
 import { useTranslations } from 'next-intl';
 import { MessageSquare } from 'lucide-react';
-import { ToastStack } from '@/components/ui/shared/Toast';
 import { Badge } from '@/components/ui/shared/Badge';
 import { Button } from '@/components/ui/shared/Button';
 import { FORM_SELECT_CLASS } from '@/components/shared/formSelectStyles';
@@ -397,7 +396,6 @@ export function TasksPage() {
         </div>
       )}
 
-      <ToastStack {...toastMessages} />
     </div>
   );
 }

frontend/src/components/ui/organizations/ConnectionCaseHistoryContent.tsx

@@ -12,7 +12,6 @@ import { treatmentTypeLabelFromCatalog } from '@/components/shared/treatmentType
 import { Button } from '@/components/ui/shared/Button';
 import { MobileDetailBackButton } from '@/components/ui/shared/MobileDetailBackButton';
 import { SearchBar } from '@/components/ui/shared/SearchBar';
-import { ToastStack } from '@/components/ui/shared/Toast';
 import { CaseDetailPanel, CaseTaskProgressBar } from '@/components/ui/lab/CaseDetailPanel';
 import { LabCaseCommentsPanel } from '@/components/ui/lab/LabCaseCommentsPanel';
 import {
@@ -210,8 +209,6 @@ export function ConnectionCaseHistoryContent({
         </p>
       </div>
 
-      <ToastStack {...toastMessages} />
-
       <div className="grid gap-4 lg:grid-cols-[minmax(300px,380px)_1fr]">
         <section
           className={`rounded-lg border border-border bg-surface p-3 sm:p-4 space-y-3 flex flex-col min-h-0 ${

frontend/src/components/ui/organizations/InvitationHistoryDialog.tsx

@@ -7,12 +7,11 @@ import {
   ResponsiveDialogOverlay,
   ResponsiveDialogPanel,
 } from '@/components/ui/shared/ResponsiveDialog';
-import { ToastStack, type ToastMessages } from '@/components/ui/shared/Toast';
+import { Table } from '@/components/ui/shared/Table';
+import { CopyInvitationLinkButton } from '@/components/ui/organizations/CopyInvitationLinkButton';
 import type { OrganizationInvitationHistoryItemDto } from '@/lib/api/organization';
 import { Badge } from '@/components/ui/shared/Badge';
 import { organizationConnectionStatusVariant } from '@/components/organizations/connectionStatusVariant';
-import { Table } from '@/components/ui/shared/Table';
-import { CopyInvitationLinkButton } from '@/components/ui/organizations/CopyInvitationLinkButton';
 
 function formatTableDate(value: string): string {
   const d = new Date(value);
@@ -28,8 +27,6 @@ type InvitationHistoryDialogProps = {
   copiedId: string | null;
   copyingInvitationId: string | null;
   onCopy: (invitation: OrganizationInvitationHistoryItemDto) => void;
-  /** Same page-level toasts, rendered at top of dialog while it is open. */
-  toastMessages?: ToastMessages;
 };
 
 export function InvitationHistoryDialog({
@@ -40,7 +37,6 @@ export function InvitationHistoryDialog({
   copiedId,
   copyingInvitationId,
   onCopy,
-  toastMessages,
 }: InvitationHistoryDialogProps) {
   const t = useTranslations('organizations');
 
@@ -72,8 +68,6 @@ export function InvitationHistoryDialog({
           <DialogCloseButton onClick={onClose} />
         </div>
 
-        {toastMessages && <ToastStack {...toastMessages} />}
-
         {loading ? (
           <p className="text-sm text-text-secondary">{t('loadingHistory')}</p>
         ) : items.length === 0 ? (

frontend/src/components/ui/organizations/OrganizationsPage.tsx

@@ -24,7 +24,6 @@ import { organizationConnectionStatusVariant } from '@/components/organizations/
 import { Input } from '@/components/ui/shared/Input';
 import { SearchBar } from '@/components/ui/shared/SearchBar';
 import { Table } from '@/components/ui/shared/Table';
-import { ToastStack } from '@/components/ui/shared/Toast';
 import { getUserFacingError } from '@/components/shared/formatApiError';
 
 function formatOrganizationStatusLabel(status: string): string {
@@ -327,8 +326,6 @@ export function OrganizationsPage() {
         </Button>
       </div>
 
-      {!historyOpen && <ToastStack {...toast.messages} />}
-
       <SearchBar
         value={query}
         onChange={setQuery}
@@ -596,7 +593,6 @@ export function OrganizationsPage() {
         copiedId={copiedId}
         copyingInvitationId={copyingInvitationId}
         onCopy={(invitation) => void handleHistoryCopy(invitation)}
-        toastMessages={toast.messages}
       />
     </div>
   );

frontend/src/components/ui/patient/PatientsPage.tsx

@@ -3,7 +3,6 @@
 import { useEffect, useMemo, useState } from 'react';
 import { useTranslations } from 'next-intl';
 import { Button } from '@/components/ui/shared/Button';
-import { ToastStack } from '@/components/ui/shared/Toast';
 import { patientsApi } from '@/lib/api/patients';
 import { getUserFacingError } from '@/components/shared/formatApiError';
 import { useAuth } from '@/lib/hooks/useAuth';
@@ -125,8 +124,6 @@ export function PatientsPage() {
         </Button>
       </div>
 
-      <ToastStack {...toast.messages} />
-
       {isCreateOpen && (
         <CreatePatientModal
           isOpen={isCreateOpen}

frontend/src/components/ui/shared/Toast.tsx

@@ -40,7 +40,10 @@ function hasToastMessages(messages: ToastMessages): boolean {
   return Boolean(messages.error || messages.success || messages.info || messages.default);
 }
 
-/** Renders active toast messages with shared badge colors (success / warning / danger / default). */
+/**
+ * Inline toast stack — prefer global `ToastProvider` + `useToast()` for page feedback.
+ * Dialog/form field errors should stay inline near the control.
+ */
 export function ToastStack({ error, success, info, default: defaultMessage, className = '' }: ToastStackProps) {
   if (!hasToastMessages({ error, success, info, default: defaultMessage })) {
     return null;
@@ -63,8 +66,9 @@ export type ToastViewportProps = ToastStackProps & {
 };
 
 const viewportPositionClass: Record<Exclude<ToastViewportPosition, 'inline'>, string> = {
-  top: 'fixed top-4 left-0 right-0 z-[70] px-4 pointer-events-none',
-  bottom: 'fixed bottom-4 left-0 right-0 z-[70] px-4 pointer-events-none',
+  top: 'fixed top-4 left-0 right-0 z-[100] px-4 pointer-events-none',
+  bottom:
+    'fixed bottom-4 left-0 right-0 z-[100] px-4 pb-[max(1rem,env(safe-area-inset-bottom))] pointer-events-none',
 };
 
 /**
@@ -87,7 +91,7 @@ export function ToastViewport({
 
   return (
     <div className={viewportPositionClass[position]}>
-      <div className="pointer-events-auto w-full">{stack}</div>
+      <div className="pointer-events-auto mx-auto w-full max-w-md">{stack}</div>
     </div>
   );
 }

frontend/src/components/ui/shared/ToastProvider.tsx

@@ -0,0 +1,213 @@
+'use client';
+
+import {
+  createContext,
+  useCallback,
+  useContext,
+  useEffect,
+  useMemo,
+  useState,
+  type ReactNode,
+} from 'react';
+import { createPortal } from 'react-dom';
+import {
+  ToastStack,
+  type ToastMessages,
+  type ToastViewportPosition,
+} from '@/components/ui/shared/Toast';
+
+const DEFAULT_DURATION_MS = 4000;
+
+export type UseToastOptions = {
+  successMs?: number;
+  errorMs?: number;
+  infoMs?: number;
+  defaultMs?: number;
+};
+
+export type ToastContextValue = {
+  error: string;
+  success: string;
+  info: string;
+  defaultMessage: string;
+  setError: (message: string) => void;
+  setSuccess: (message: string) => void;
+  setInfo: (message: string) => void;
+  setDefaultMessage: (message: string) => void;
+  showError: (message: string) => void;
+  showSuccess: (message: string) => void;
+  showInfo: (message: string) => void;
+  showDefault: (message: string) => void;
+  clear: () => void;
+  messages: ToastMessages;
+};
+
+const ToastContext = createContext<ToastContextValue | null>(null);
+
+function useToastState(options: UseToastOptions = {}): ToastContextValue {
+  const successMs = options.successMs ?? DEFAULT_DURATION_MS;
+  const errorMs = options.errorMs ?? DEFAULT_DURATION_MS;
+  const infoMs = options.infoMs ?? DEFAULT_DURATION_MS;
+  const defaultMs = options.defaultMs ?? DEFAULT_DURATION_MS;
+
+  const [error, setError] = useState('');
+  const [success, setSuccess] = useState('');
+  const [info, setInfo] = useState('');
+  const [defaultMessage, setDefaultMessage] = useState('');
+
+  useEffect(() => {
+    if (!success) return;
+    const id = setTimeout(() => setSuccess(''), successMs);
+    return () => clearTimeout(id);
+  }, [success, successMs]);
+
+  useEffect(() => {
+    if (!error) return;
+    const id = setTimeout(() => setError(''), errorMs);
+    return () => clearTimeout(id);
+  }, [error, errorMs]);
+
+  useEffect(() => {
+    if (!info) return;
+    const id = setTimeout(() => setInfo(''), infoMs);
+    return () => clearTimeout(id);
+  }, [info, infoMs]);
+
+  useEffect(() => {
+    if (!defaultMessage) return;
+    const id = setTimeout(() => setDefaultMessage(''), defaultMs);
+    return () => clearTimeout(id);
+  }, [defaultMessage, defaultMs]);
+
+  const clear = useCallback(() => {
+    setError('');
+    setSuccess('');
+    setInfo('');
+    setDefaultMessage('');
+  }, []);
+
+  const showError = useCallback((message: string) => {
+    setSuccess('');
+    setInfo('');
+    setDefaultMessage('');
+    setError(message);
+  }, []);
+
+  const showSuccess = useCallback((message: string) => {
+    setError('');
+    setInfo('');
+    setDefaultMessage('');
+    setSuccess(message);
+  }, []);
+
+  const showInfo = useCallback((message: string) => {
+    setError('');
+    setSuccess('');
+    setDefaultMessage('');
+    setInfo(message);
+  }, []);
+
+  const showDefault = useCallback((message: string) => {
+    setError('');
+    setSuccess('');
+    setInfo('');
+    setDefaultMessage(message);
+  }, []);
+
+  const messages: ToastMessages = useMemo(
+    () => ({ error, success, info, default: defaultMessage }),
+    [error, success, info, defaultMessage],
+  );
+
+  return useMemo(
+    () => ({
+      error,
+      success,
+      info,
+      defaultMessage,
+      setError,
+      setSuccess,
+      setInfo,
+      setDefaultMessage,
+      showError,
+      showSuccess,
+      showInfo,
+      showDefault,
+      clear,
+      messages,
+    }),
+    [
+      error,
+      success,
+      info,
+      defaultMessage,
+      showError,
+      showSuccess,
+      showInfo,
+      showDefault,
+      clear,
+      messages,
+    ],
+  );
+}
+
+type ToastProviderProps = {
+  children: ReactNode;
+  /** Fixed viewport position. Default `bottom` — visible when scrolled and above dialogs. */
+  position?: Exclude<ToastViewportPosition, 'inline'>;
+};
+
+function GlobalToastHost({
+  messages,
+  position,
+}: {
+  messages: ToastMessages;
+  position: Exclude<ToastViewportPosition, 'inline'>;
+}) {
+  const hasMessage = Boolean(
+    messages.error || messages.success || messages.info || messages.default,
+  );
+
+  if (!hasMessage) {
+    return null;
+  }
+
+  const positionClass =
+    position === 'bottom'
+      ? 'fixed bottom-4 left-0 right-0 z-[100] px-4 pb-[max(1rem,env(safe-area-inset-bottom))] pointer-events-none'
+      : 'fixed top-4 left-0 right-0 z-[100] px-4 pt-[max(1rem,env(safe-area-inset-top))] pointer-events-none';
+
+  return createPortal(
+    <div className={positionClass} aria-live="polite">
+      <div className="pointer-events-auto mx-auto w-full max-w-md">
+        <ToastStack {...messages} />
+      </div>
+    </div>,
+    document.body,
+  );
+}
+
+export function ToastProvider({ children, position = 'bottom' }: ToastProviderProps) {
+  const toast = useToastState();
+  const [mounted, setMounted] = useState(false);
+
+  useEffect(() => {
+    setMounted(true);
+  }, []);
+
+  return (
+    <ToastContext.Provider value={toast}>
+      {children}
+      {mounted ? <GlobalToastHost messages={toast.messages} position={position} /> : null}
+    </ToastContext.Provider>
+  );
+}
+
+/** Global app toasts — requires `<ToastProvider>` ancestor (dashboard layout). */
+export function useToast(): ToastContextValue {
+  const context = useContext(ToastContext);
+  if (!context) {
+    throw new Error('useToast must be used within ToastProvider');
+  }
+  return context;
+}

frontend/src/components/ui/staff/StaffPage.tsx

@@ -34,7 +34,6 @@ import { Badge } from '@/components/ui/shared/Badge';
 import { Input } from '@/components/ui/shared/Input';
 import { Checkbox } from '@/components/ui/shared/Checkbox';
 import { Table } from '@/components/ui/shared/Table';
-import { ToastStack } from '@/components/ui/shared/Toast';
 import { getUserFacingError } from '@/components/shared/formatApiError';
 import { StaffMembersMobileList } from '@/components/ui/staff/StaffMembersMobileList';
 import { useToast } from '@/lib/hooks/useToast';
@@ -523,8 +522,6 @@ export function StaffPage() {
         </Button>
       </div>
 
-      <ToastStack {...toast.messages} />
-
       {seats && (
         <p className="text-sm text-text-secondary">
           {t('seatsLabel')}{' '}

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)}

frontend/src/lib/hooks/useToast.ts

@@ -1,103 +1,2 @@
-'use client';
-
-import { useCallback, useEffect, useState } from 'react';
-import type { ToastMessages } from '@/components/ui/shared/Toast';
-
-const DEFAULT_DURATION_MS = 4000;
-
-export type UseToastOptions = {
-  successMs?: number;
-  errorMs?: number;
-  infoMs?: number;
-  defaultMs?: number;
-};
-
-export function useToast(options: UseToastOptions = {}) {
-  const successMs = options.successMs ?? DEFAULT_DURATION_MS;
-  const errorMs = options.errorMs ?? DEFAULT_DURATION_MS;
-  const infoMs = options.infoMs ?? DEFAULT_DURATION_MS;
-  const defaultMs = options.defaultMs ?? DEFAULT_DURATION_MS;
-
-  const [error, setError] = useState('');
-  const [success, setSuccess] = useState('');
-  const [info, setInfo] = useState('');
-  const [defaultMessage, setDefaultMessage] = useState('');
-
-  useEffect(() => {
-    if (!success) return;
-    const id = setTimeout(() => setSuccess(''), successMs);
-    return () => clearTimeout(id);
-  }, [success, successMs]);
-
-  useEffect(() => {
-    if (!error) return;
-    const id = setTimeout(() => setError(''), errorMs);
-    return () => clearTimeout(id);
-  }, [error, errorMs]);
-
-  useEffect(() => {
-    if (!info) return;
-    const id = setTimeout(() => setInfo(''), infoMs);
-    return () => clearTimeout(id);
-  }, [info, infoMs]);
-
-  useEffect(() => {
-    if (!defaultMessage) return;
-    const id = setTimeout(() => setDefaultMessage(''), defaultMs);
-    return () => clearTimeout(id);
-  }, [defaultMessage, defaultMs]);
-
-  const clear = useCallback(() => {
-    setError('');
-    setSuccess('');
-    setInfo('');
-    setDefaultMessage('');
-  }, []);
-
-  const showError = useCallback((message: string) => {
-    setSuccess('');
-    setInfo('');
-    setDefaultMessage('');
-    setError(message);
-  }, []);
-
-  const showSuccess = useCallback((message: string) => {
-    setError('');
-    setInfo('');
-    setDefaultMessage('');
-    setSuccess(message);
-  }, []);
-
-  const showInfo = useCallback((message: string) => {
-    setError('');
-    setSuccess('');
-    setDefaultMessage('');
-    setInfo(message);
-  }, []);
-
-  const showDefault = useCallback((message: string) => {
-    setError('');
-    setSuccess('');
-    setInfo('');
-    setDefaultMessage(message);
-  }, []);
-
-  const messages: ToastMessages = { error, success, info, default: defaultMessage };
-
-  return {
-    error,
-    success,
-    info,
-    defaultMessage,
-    setError,
-    setSuccess,
-    setInfo,
-    setDefaultMessage,
-    showError,
-    showSuccess,
-    showInfo,
-    showDefault,
-    clear,
-    messages,
-  };
-}
+export { ToastProvider, useToast } from '@/components/ui/shared/ToastProvider';
+export type { ToastContextValue, UseToastOptions } from '@/components/ui/shared/ToastProvider';