Added
- Sequential upgrade queue (#14) — new Queue tab with drag-and-drop builder; devices upgrade one-by-one with full verification before the next starts; cancel mid-queue safely
- Scheduled upgrades — new Schedule tab; set a date/time per device, system auto-runs the upgrade at the scheduled time
- PoE-aware upgrade ordering — detects which devices are powered via PoE and reorders the queue: powered devices first, power sources last (prevents power loss during switch reboot)
- RouterOS version checker — shows latest versions for all 4 channels (stable, testing, long-term, development) on the Upgrades page; checks MikroTik servers hourly
- New RouterOS version webhook — get notified when MikroTik releases a new RouterOS version on any channel
- LTE modem firmware upgrade — upgrade button on LTE tab when newer firmware is available (admin only)
- 3-tab Upgrades page — restructured into Upgrades, Queue, and Schedule tabs for better organization