```

refactor notifications popover to include unread count, mark all as read button, and loading state
```

002_source/cms/src/components/dashboard/layout/notifications-popover/mark-all-as-read-button.tsx

@@ -0,0 +1,29 @@
+'use client';
+
+import * as React from 'react';
+import IconButton from '@mui/material/IconButton';
+import Tooltip from '@mui/material/Tooltip';
+import { EnvelopeSimple as EnvelopeSimpleIcon } from '@phosphor-icons/react/dist/ssr/EnvelopeSimple';
+import { useTranslation } from 'react-i18next';
+
+export function MarkAllAsReadButton({
+  onMarkAllAsRead,
+  disabled,
+}: {
+  onMarkAllAsRead: (() => void) | undefined;
+  disabled: boolean;
+}): React.JSX.Element {
+  const { t } = useTranslation();
+
+  return (
+    <Tooltip title={t('mark-all-as-read')}>
+      <IconButton
+        edge="end"
+        onClick={onMarkAllAsRead}
+        disabled={disabled}
+      >
+        <EnvelopeSimpleIcon color={disabled ? 'lightgray' : 'black'} />
+      </IconButton>
+    </Tooltip>
+  );
+}