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/waving-hands-rollup.sh

@@ -34,7 +34,7 @@ req = human = bot = 0
 hips, bips = set(), set()
 pages, joins, refs, campaigns = collections.Counter(), collections.Counter(), collections.Counter(), collections.Counter()
 seen_campaign = set()
-for f in sorted(glob.glob("/var/lib/caddy/access*.log*")):
+for f in sorted(glob.glob("/var/lib/caddy/waving-hands-access*.log*")):
     if os.path.getmtime(f) < t0: continue
     opener = gzip.open if f.endswith(".gz") else open
     with opener(f, "rt", errors="ignore") as fh: