Watch the DiGiCo FOH console inside AUDIO; "+ Key" asks for a group when the deck is full

- DIGICO (in the AUDIO group): Companion's DiGiCo_FOH connection, the digico-relay helper on
  NA Ingest (hold AUDIO restarts it), and a ping to the console at 10.1.60.100 (the OSC
  connection reads good even with the console off).
- Settings page: "+ Key" on an unwatched Companion connection asks which group key to put it
  in when the Status page has no free spot (it used to make a key nobody could see); the
  connection field of a check suggests Companion's connection names.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_status_panel.py

@@ -68,7 +68,7 @@ def healthy_snapshot(now):
     snap.ping = {"10.1.3.227": 0, "10.6.7.13": 0, "10.1.0.1": 0}
     snap.link = True
     snap.launchd = {"org.waterschurch.resi-propresenter": 884, "org.waterschurch.lobby-captions": 900,
-                    "org.waterschurch.lobby-captions-display": 901}
+                    "org.waterschurch.lobby-captions-display": 901, "org.waterschurch.digico-relay": 902}
     snap.launchd_time = now
     snap.procs = {"/Applications/ProdDash.app/Contents/MacOS/ProdDash": True}
     snap.http = {"https://central.resi.io/": True, "http://10.6.7.13:8080/": True, "http://10.1.14.225:1025/": True}