useTicketScanner already captures the stats fetch error into a ref
but ScanTicketsPage never read it, so a 404 / 403 / auth failure on
GET /tickets/event/{id}/stats was completely silent — the counts
strip kept showing the last good value while scans landed on the
backend, making it look like the scanner was broken when actually
the refresh path was just dead.
Adds a small destructive-toned banner under the counts strip,
visible across both Scanner and Scanned tabs. AlertCircle already
imported. No new composable surface — statsError is already exported
from useTicketScanner.
Surfaced by a missing /stats endpoint on aio-demo's events backend
(now shipped as events 1.6.1-aio.5).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
