fix(admin-ui): split /dictionaries into layout + index for nested route

После regen routeTree.gen.ts /dictionaries/$name стал child route /dictionaries.
dictionaries.tsx рендерил карточки без <Outlet/> — клик по карточке менял URL,
но child компонент негде было рендерить, поэтому видна та же страница со списком.

Разнёс по конвенции:
- dictionaries.tsx — layout с <Outlet/>
- dictionaries.index.tsx — карточки списка (matches /dictionaries)
- dictionaries.$name.tsx — без изменений (matches /dictionaries/{name})

ordinis-admin-ui/src/routes/dictionaries.tsx

@@ -1,43 +1,9 @@
-import { createFileRoute, Link } from '@tanstack/react-router'
-import { useTranslation } from 'react-i18next'
-import { useDictionaries } from '@/api/queries'
+import { createFileRoute, Outlet } from '@tanstack/react-router'
 
 export const Route = createFileRoute('/dictionaries')({
-  component: DictionariesPage,
+  component: DictionariesLayout,
 })
 
-function DictionariesPage() {
-  const { t } = useTranslation()
-  const { data, isLoading, error } = useDictionaries()
-
-  if (isLoading) return <p className="text-zinc-500">{t('loading')}</p>
-  if (error) return <p className="text-red-600">{t('error.failed')}: {String(error)}</p>
-
-  return (
-    <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
-      {(data ?? []).map((d) => (
-        <Link
-          key={d.id}
-          to="/dictionaries/$name"
-          params={{ name: d.name }}
-          className="border border-zinc-200 rounded-lg p-4 hover:border-brand-500 hover:shadow-sm transition bg-white"
-        >
-          <div className="flex items-center justify-between mb-1">
-            <h2 className="font-semibold text-zinc-900">{d.displayName ?? d.name}</h2>
-            <span className="text-xs px-2 py-0.5 rounded bg-brand-50 text-brand-700">
-              {d.scope}
-            </span>
-          </div>
-          <p className="text-sm text-zinc-600 line-clamp-2 mb-2">{d.description}</p>
-          <div className="flex gap-2 text-xs text-zinc-400">
-            <span>v{d.schemaVersion}</span>
-            <span>·</span>
-            <span>{d.bundle}</span>
-            <span>·</span>
-            <span>{d.supportedLocales.join(', ')}</span>
-          </div>
-        </Link>
-      ))}
-    </div>
-  )
+function DictionariesLayout() {
+  return <Outlet />
 }