Waving Hands: a browser duel after Bartle's 1977 game

SvelteKit 5 single-player version against a heuristic bot. The engine
resolves all forty spells simultaneously as the rules describe, the
ledger of gestures is the interface, and the duel is saved in the
browser. Tester feedback rounds added per-hand planning, threat
evidence, a result strip with one-time rule explanations, a phone
layout and a structured rules page. Deploys as a static site behind
Caddy.

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

deploy/deploy.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+# Build locally and push the static site to the droplet.
+# Usage: deploy/deploy.sh <droplet-ip-or-host>
+set -euo pipefail
+HOST="${1:?usage: deploy.sh <droplet-ip-or-host>}"
+
+npm run check
+npm test
+npm run build
+
+# Old hashed chunks stay a week: a page loaded before this deploy can still
+# fetch the module it was built against instead of failing mid-duel.
+rsync -az --delete --filter='P _app/immutable/*' \
+  build/ "root@$HOST:/opt/waving-hands/build/"
+ssh "root@$HOST" '
+  find /opt/waving-hands/build/_app/immutable -type f -mtime +7 -delete
+  chown -R root:caddy /opt/waving-hands
+  chmod -R g+rX /opt/waving-hands
+  systemctl reload caddy
+  systemctl --no-pager -l status caddy | head -3
+'
+echo "deployed."