fix(widget-secrets): add missing widget_secret migration and add error notifications

The widget_secret table was defined in all three Drizzle schema files but
no SQL migration was ever generated to create it, causing setSecret to
fail with 'no such table: widget_secret' in production (drizzle-kit push
in development hid the problem).

- Add migration SQL for sqlite (0040), mysql (0042), postgresql (0008)
- Update journal entries for all three dialects
- Add onError handlers to setSecret/deleteSecret mutations so errors
  are shown as red notifications instead of silently swallowed

Fixes #6186

packages/widgets/src/_inputs/widget-multiReleasesRepositories-input.tsx

@@ -50,6 +50,7 @@ import {
 } from "@homarr/definitions";
 import { findBestIconMatch, IconPicker } from "@homarr/forms-collection";
 import { createModal, useModalAction } from "@homarr/modals";
+import { showErrorNotification } from "@homarr/notifications";
 import { useScopedI18n } from "@homarr/translation/client";
 import { MaskedImage } from "@homarr/ui";
 
@@ -269,8 +270,24 @@ const providersWithAuth: ReleaseProviderKind[] = [
 const ProviderTokensSection = ({ itemId, repositories }: { itemId: string; repositories: ReleasesRepository[] }) => {
   const tRepository = useScopedI18n("widget.releases.option.repositories");
   const { data: configuredKinds = [], refetch } = clientApi.widget.secrets.getConfiguredKinds.useQuery({ itemId });
-  const setSecret = clientApi.widget.secrets.setSecret.useMutation({ onSuccess: () => refetch() });
-  const deleteSecret = clientApi.widget.secrets.deleteSecret.useMutation({ onSuccess: () => refetch() });
+  const setSecret = clientApi.widget.secrets.setSecret.useMutation({
+    onSuccess: () => refetch(),
+    onError: (error) => {
+      showErrorNotification({
+        title: "Failed to save token",
+        message: error.message,
+      });
+    },
+  });
+  const deleteSecret = clientApi.widget.secrets.deleteSecret.useMutation({
+    onSuccess: () => refetch(),
+    onError: (error) => {
+      showErrorNotification({
+        title: "Failed to delete token",
+        message: error.message,
+      });
+    },
+  });
 
   const authProviders = useMemo(() => {
     const usedProviders = repositories.map((r) => r.provider).filter((p): p is ReleaseProviderKind => p !== undefined);