fix(kuma): Cloudron monitors under dedicated group; zero IP literals [#435]

New "Cloudron" group (id 277); all 55 app monitors moved there
(canary-verified). Deleted IP-literal monitor id=8 (dup of DNS-named
id=210) and repointed appletv monitor to new DNS name
stl-appletv-livingroom.knel.net. Fleet-wide IP literals in Kuma: 0.
Sync tool default group updated to 277.

Results: https://projects.knownelement.com/issues/435#note-5

scripts/kuma-cloudron-sync.py

@@ -30,7 +30,7 @@ from pathlib import Path
 import socketio
 
 HERE = Path(__file__).resolve().parent.parent / "oam" / "kuma" / "cloudron-apps.txt"
-DEFAULT_GROUP = 48
+DEFAULT_GROUP = 277  # "Cloudron" group (founder-directed 2026-09-02)
 
 
 def load_apps():