- route-update.sh: add flock to prevent concurrent runs
- route-update.sh: measure and save execution duration
- route-web-api.py: skip IPv6 checks for domains without AAAA (NOIP)
- route-web-api.py: move "Проверить" button first, add Enter key handler
- route-web-api.py: show update duration in status bar
- route-web-api.py: expose duration in /api/status
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>