fix: use correct Host header in deploy health check

ALLOWED_HOSTS doesn't include localhost, so curl with default Host
header always gets a 400 and the health check fails.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

deploy/deploy.sh

@@ -23,7 +23,7 @@ sudo systemctl restart sum-nohype
 
 echo "==> Waiting for health check"
 for i in $(seq 1 30); do
-  if curl -fsS http://localhost:8001/ >/dev/null 2>&1; then
+  if curl -fsS -H "Host: nohypeai.net" http://localhost:8001/ >/dev/null 2>&1; then
     echo "==> Site is up"
     exit 0
   fi

deploy/entrypoint.prod.sh

@@ -6,6 +6,14 @@ python manage.py tailwind build
 python manage.py migrate --noinput
 python manage.py collectstatic --noinput
 
+# Set Wagtail site hostname from first entry in ALLOWED_HOSTS
+python manage.py shell -c "
+from wagtail.models import Site
+import os
+hostname = os.environ.get('ALLOWED_HOSTS', 'localhost').split(',')[0].strip()
+Site.objects.update(hostname=hostname, port=443, site_name='No Hype AI')
+"
+
 exec gunicorn config.wsgi:application \
     --workers 3 \
     --bind 0.0.0.0:8000 \