The hall comes first, in the shape of wizwar's landing

The home page is a centred card: title and pitch, your name, play the
bot or continue the duel under way, create or join a duel by code, a
sample ledger, the duels this browser holds with whose move it is, and
the story of the game. The single-player board lives at /play. The
droplet gains the duel server as a systemd service behind Caddy.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

deploy/setup-server.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+# Adds the duel server to a droplet that setup-droplet.sh already prepared.
+# Run ON the droplet as root; safe to run again. Installs Node 22, creates
+# the service user and data directory, and teaches Caddy to hand /api and
+# /ws to the server while it keeps serving the static site itself.
+set -euo pipefail
+
+if ! command -v node >/dev/null || [[ "$(node -v)" != v22* ]]; then
+  curl -fsSL https://deb.nodesource.com/setup_22.x | bash -
+  apt-get install -qy nodejs
+fi
+
+id -u waving-hands &>/dev/null || useradd -r -m -d /opt/waving-hands-home waving-hands
+mkdir -p /opt/waving-hands/app /var/lib/waving-hands/rooms
+chown -R waving-hands:waving-hands /var/lib/waving-hands
+
+# Caddy: the two proxied paths go in before the static file handling.
+if ! grep -q 'reverse_proxy' /etc/caddy/Caddyfile; then
+  python3 - <<'PY'
+import pathlib
+p = pathlib.Path('/etc/caddy/Caddyfile'); s = p.read_text()
+marker = 'try_files {path} {path}.html /index.html'
+proxy = '''@duel path /api/* /ws
+reverse_proxy @duel localhost:8788 {
+	lb_try_duration 30s
+	lb_try_interval 250ms
+}
+
+'''
+assert marker in s
+p.write_text(s.replace(marker, proxy + marker))
+PY
+  caddy validate --config /etc/caddy/Caddyfile
+  systemctl reload caddy
+fi
+
+echo "server prerequisites ready: now run deploy/deploy.sh <ip> from your machine"