fix(frontend): skeleton replacement ordering and col-check alignment

- Await the entry list refresh before removing the skeleton so the
  real row arrives before the placeholder disappears. handleCaptured
  now returns its Promise.all; startPolling awaits it before calling
  onJobSettled on the success path.
- Add col-check as the first child of SkeletonEntryRow to match
  EntryRow's DOM structure; without it, columns misalign on touch
  devices where col-check becomes display:flex.

frontend/src/App.jsx

@@ -436,7 +436,7 @@ export default function App() {
 
   const handleCaptured = useCallback(() => {
     if (!archiveId) return
-    Promise.all([
+    return Promise.all([
       loadEntries(archiveId, searchQuery, tagFilter),
       fetchRuns(archiveId).then(setRuns),
     ])

frontend/src/components/CaptureDialog.jsx

@@ -206,8 +206,8 @@ export default function CaptureDialog({ open, archiveId, onClose, onCaptured, on
         if (updated.status === 'completed') {
           clearInterval(pollIntervals.current.get(jobUid))
           pollIntervals.current.delete(jobUid)
+          await Promise.resolve(onCapturedRef.current?.())
           onJobSettledRef.current?.(bgJobId)
-          onCapturedRef.current()
           try {
             const notes = updated.notes_json ? JSON.parse(updated.notes_json) : null
             if (notes?.ublock_skipped || notes?.cookie_ext_skipped) {

frontend/src/components/SkeletonEntryRow.jsx

@@ -1,6 +1,7 @@
 export default function SkeletonEntryRow() {
   return (
     <div className="skeleton-row">
+      <div className="col-check" aria-hidden="true" />
       <div className="col-added">
         <span className="skeleton-cell" style={{ width: 108, height: 13 }} />
       </div>