ui: delete confirm shows #id + truncated title (30 chars)

frontend/src/views/Admin.vue

@@ -428,7 +428,8 @@ async function downloadAuth(v) {
 }
 
 async function deleteVideo(v) {
-  if (!confirm(`Delete "${v.title}"?`)) return
+  const shortTitle = v.title && v.title.length > 30 ? v.title.slice(0, 30) + '…' : (v.title || 'Untitled')
+  if (!confirm(`Delete #${v.id} "${shortTitle}"?`)) return
   try {
     await axios.delete(`/api/admin/videos/${v.id}`, { headers: auth.getHeaders() })
     fetchVideos(); fetchStats()