bugfix: all the toasts unfied inside organizations feature. other features still need a refactor for toasts though.

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

@@ -1,6 +1,7 @@
 'use client';
 
 import { DialogCloseButton } from '@/components/ui/common/DialogCloseButton';
+import { ToastStack, type ToastMessages } from '@/components/ui/common/Toast';
 import type { OrganizationInvitationHistoryItemDto } from '@/lib/api/organization';
 import { Badge, organizationConnectionStatusVariant } from '@/components/ui/common/Badge';
 import { Table } from '@/components/ui/common/Table';
@@ -28,8 +29,8 @@ type InvitationHistoryDialogProps = {
   copiedId: string | null;
   copyingInvitationId: string | null;
   onCopy: (invitation: OrganizationInvitationHistoryItemDto) => void;
-  copyError?: string;
-  copySuccess?: string;
+  /** Same page-level toasts, rendered at top of dialog while it is open. */
+  toastMessages?: ToastMessages;
 };
 
 export function InvitationHistoryDialog({
@@ -40,8 +41,7 @@ export function InvitationHistoryDialog({
   copiedId,
   copyingInvitationId,
   onCopy,
-  copyError,
-  copySuccess,
+  toastMessages,
 }: InvitationHistoryDialogProps) {
   if (!open) return null;
 
@@ -60,17 +60,7 @@ export function InvitationHistoryDialog({
           <DialogCloseButton onClick={onClose} />
         </div>
 
-        {copyError && (
-          <div className="rounded-[var(--radius-md)] border border-red-500/40 bg-red-500/10 px-4 py-3 text-sm text-red-700 dark:text-red-300">
-            {copyError}
-          </div>
-        )}
-
-        {copySuccess && (
-          <div className="rounded-[var(--radius-md)] border border-primary/30 bg-primary-soft/40 px-4 py-3 text-sm text-text-primary">
-            {copySuccess}
-          </div>
-        )}
+        {toastMessages && <ToastStack {...toastMessages} />}
 
         {loading ? (
           <p className="text-sm text-text-secondary">Loading invitation history...</p>