fix(mood): surface a toast when a list delete fails

The mood list delete mutation had no onError handler, so a rejected
DELETE cleared no state and showed nothing — the row stayed in place
with no signal the request was refused. Add an error toast on failure,
mirroring the medication-card silent-failure fix.

src/components/mood/mood-list.tsx

@@ -63,6 +63,7 @@ import {
 } from "lucide-react";
 import { useId, useState } from "react";
 import { createPortal } from "react-dom";
+import { toast } from "sonner";
 import { formatDateTime } from "@/lib/format";
 import { useTranslations, useFormatters } from "@/lib/i18n/context";
 import {
@@ -206,6 +207,13 @@ export function MoodList({ onAddFirst }: MoodListProps = {}) {
     onSuccess: () => {
       void invalidateKeys(queryClient, moodDependentKeys);
     },
+    // v1.11.5 — a failed delete used to fail silently (no onError handler),
+    // leaving the row in place with no signal that the request was rejected.
+    // Surface the failure so the user knows to retry. Mirrors the v1.11.3
+    // medication-card silent-failure fix.
+    onError: () => {
+      toast.error(t("mood.deleteError"));
+    },
   });
 
   const updateMutation = useMutation({