feat(admin): transfer user accounts and show local cover coverage

apps/web/src/pages/admin/SourcesPage.tsx

@@ -75,6 +75,11 @@ function SourceCard({ source, onEdit }: { source: Source; onEdit: () => void })
   const [test, setTest] = useState<TestResult | null>(null);
   const [confirmDelete, setConfirmDelete] = useState(false);
   const id = source.id;
+  const covers = useQuery({
+    queryKey: ['source-cover-stats', id],
+    queryFn: async () => unwrap(await session.client.GET('/api/v1/admin/sources/{id}/cover-stats', { params: { path: { id } } })),
+    refetchInterval: 10000,
+  });
   const refresh = () => queryClient.invalidateQueries({ queryKey: ['sources'] });
 
   const scan = useMutation({
@@ -144,6 +149,11 @@ function SourceCard({ source, onEdit }: { source: Source; onEdit: () => void })
       </div>
       <div className={l.cardFoot}>
         <ScanLine scan={source.scan} lastScanAt={source.last_scan_at} />
+        {covers.data && <span className={s.note} role="status">
+          {t('sources.cover_files', { count: covers.data.files_with_cover, total: covers.data.files_total })}
+          {covers.data.albums_pending > 0 && ` · ${t('sources.cover_pending', { count: covers.data.albums_pending })}`}
+        </span>}
+        <FormError>{covers.error ? errorText(covers.error) : null}</FormError>
         {test && (
           <span className={`${l.test} ${test.ok ? l.testOk : l.testFail}`} role="status">
             {test.ok ? t('sources.test_ok', { count: test.audio_files }) : t('sources.test_fail', { message: test.message })}

apps/web/src/pages/admin/UsersPage.tsx

@@ -5,6 +5,7 @@ import { useEffect, useState, type FormEvent } from 'react';
 import { useTranslation } from 'react-i18next';
 
 import { useSession, useUser } from '../../app/session';
+import { UserTransfer } from '../../features/users/UserTransfer';
 import { useErrorText, useFieldError } from '../../shared/lib/errors';
 import { formatRelative } from '../../shared/lib/format';
 import { assignableRoles, canManageUser, type Role } from '../../shared/lib/policy';
@@ -163,6 +164,7 @@ export function UsersPage() {
       </div>
 
       <div className={s.toolbar}>
+        {me.role === 'admin' && <UserTransfer />}
         <label className={s.search}>
           <Icon src={searchIcon} size={18} className={s.searchIcon} />
           <input