fix(settings): report the outcome of quiet settings actions

Adding or removing a passkey or a security key only redrew the list.
Disconnecting an integration and revoking a share link ran from a dialog
that had already closed, so a refused request left everything as it was
without a word. The injection-site exclusions, the local OCR switch and
the preventive-care reminder switches saved, or did not, in silence.

Each now reports through the outcome toast and, where the card has no
inline error line, the shared error toast with its error id.

src/components/settings/integrations/oauth-integration-card.tsx

@@ -15,6 +15,7 @@
 
 import { useState, type ReactNode } from "react";
 import { useMutation, useQueryClient } from "@tanstack/react-query";
+import { toastWrittenOutcome } from "@/components/outcome/outcome-toast";
 import {
   Activity,
   ArrowRight,
@@ -34,6 +35,7 @@ import {
 
 import { Button } from "@/components/ui/button";
 import { apiPost } from "@/lib/api/api-fetch";
+import { showErrorToast } from "@/lib/errors/error-toast";
 import { useTranslations } from "@/lib/i18n/context";
 import type { IntegrationCallbackUrls } from "@/lib/integrations/callback-urls";
 import { loadDocument } from "@/lib/navigation/load-document";
@@ -298,7 +300,20 @@ export function OAuthIntegrationCardView({
     mutationFn: async () => {
       await apiPost(`/api/${provider}/disconnect`);
     },
-    onSuccess: invalidateStatus,
+    onSuccess: () => {
+      invalidateStatus();
+      toastWrittenOutcome(
+        "success",
+        t("settings.integrationDisconnected", { provider: providerName }),
+      );
+    },
+    // The confirmation dialog has closed by now; without this a refused
+    // disconnect left the card connected and said nothing.
+    onError: (failure) =>
+      showErrorToast(
+        t("settings.integrationDisconnectFailed", { provider: providerName }),
+        { cause: failure },
+      ),
   });
 
   const resume = useMutation({