feat: show NAS backup status badge in library

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNQ8ghPfzAfsyVYd6HgFb6

src/components/LibraryApp.tsx

@@ -1,7 +1,7 @@
 import React, { useState, useEffect, useCallback } from 'react';
 
 interface Item { id: string; filename: string; output_px: string; has_alpha: boolean;
-  folder_id: string | null; by_name: string; tasks: string[]; delivery_status: string;
+  folder_id: string | null; by_name: string; tasks: string[]; delivery_status: string; nas_status: string;
   model_used: string; variant_of: string | null; mode: string; thumb_path: string | null; created_at: string; }
 
 export default function LibraryApp() {
@@ -172,6 +172,8 @@ export default function LibraryApp() {
                   {v.delivery_status === 'delivered' && <span className="dbadge ok">Picdrop ✓</span>}
                   {v.delivery_status === 'pending' && <span className="dbadge">Picdrop …</span>}
                   {v.delivery_status === 'failed' && <span className="dbadge err">Picdrop ✕</span>}
+                  {v.nas_status === 'mirrored' && <span className="dbadge ok">NAS ✓</span>}
+                  {v.nas_status === 'failed' && <span className="dbadge err">NAS ✕</span>}
                 </div>
                 <div className="reihe knapp">
                   {v.mode !== 'generate' && <button className="mini" onClick={() => setCompare(v)}>Vorher/Nachher</button>}