Active links and outage logging

The Active Links tab shows every currently-up link: spacecraft, ground station, band, modulation, achieved data rate, and start time.

The Outages tab is the historical record. When a link drops:
1. Outages tab → "+ Log outage" (or it auto-creates from telemetry when integrated)
2. Affected link, time started, time recovered (or "ongoing")
3. **Cause** — weather / equipment / spacecraft / planned maintenance / unknown
4. **Severity** — minor / major / critical
5. Notes (RCA pointers, ticket links)

Critical outages automatically spawn a missionAnomalies record on the Mission module side, so the flight team sees the same event in their anomaly queue. The reverse is not automatic — Mission anomalies that involve comms have to be linked manually.

Wally tools: `comms_activeLinks`, `comms_recentOutages`, `comms_logOutage` (chat-driven logging during real-time ops when the form is too slow).