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