Waving Hands moves to the shared hall host

The kit's shared setup, its own Caddy site file and access log (the
visitors, rollup and pulse read it), the gate taking a SITE override,
and the host's address everywhere. The old droplet forwards to hall
until the A record moves.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Jm2auWk6RP71CjaAb4FMoG

deploy/visitors.sh

@@ -30,7 +30,7 @@ PAGES = {"/": "hall", "/play": "play", "/rules": "rules"}
 addresses, bots = set(), set()
 pages, joins, referrers, campaigns, agents = Counter(), Counter(), Counter(), Counter(), Counter()
 requests = 0
-for path in sorted(glob.glob("/var/lib/caddy/access.log*")):
+for path in sorted(glob.glob("/var/lib/caddy/waving-hands-access*.log*")):
     try:
         with open(path) as f:
             for line in f: