v1.3.0

[1.3.0] — 2026-10-08

✨ Added

• Alert webhooks: Telegram bot + Discord delivery on every status transition (fixed English format, 5-minute per-target anti-flap cooldown), configured in Settings with per-channel test buttons. Secrets persist locally next to other preferences.
• MTR tab: trace once, then ping every responding hop continuously on a dedicated engine instance (isolated from the matrix tab), with per-hop loss/avg/best/worst and copyable IPs. Fully localized and theme-aware.
• Uptime history: per-minute rollups (avg RTT, loss, worst status) persisted as one JSON file per UTC day (7-day retention), with a per-target 24-hour dialog (hourly status bars, uptime %, outage list with durations). Pure-Dart storage — no native database dependencies on any release platform.