directory back up (parent) button + drag entry into parent to move

frontend/components/DirectoryList.vue

@@ -2,8 +2,9 @@
 import { ScrollArea } from '@/components/ui/scroll-area';
 import type { DirectoryEntry } from '#shared/types';
 
-const { entries, isOverDropZone } = defineProps<{
+const { entries, parent, isOverDropZone } = defineProps<{
     entries: DirectoryEntry[];
+    parent: DirectoryEntry | null;
     isOverDropZone?: boolean;
 }>();
 
@@ -23,6 +24,7 @@ const sortedEntries = computed(() =>
             <Icon class="size-16 animate-pulse" name="lucide:upload" />
         </div>
         <div class="flex flex-row flex-wrap gap-2">
+            <DirectoryBackEntry v-if="parent != null" :entry="parent" />
             <DirectoryEntry
                 v-for="entry in sortedEntries"
                 :key="entry.name"