fix: pull latest public images by default

install.sh

@@ -4,7 +4,7 @@ set -eu
 # Public customer bootstrap. Auth is an external service; no Auth image or
 # private source is downloaded by this script.
 REGISTRY="${OVERCOOKED_REGISTRY:-git.leee.xin/overcooked}"
-VERSION="${OVERCOOKED_VERSION:-20260902}"
+VERSION="${OVERCOOKED_VERSION:-latest}"
 ROOT="${OVERCOOKED_ROOT:-/opt/overcooked}"
 SERVER_IP="${OVERCOOKED_SERVER_IP:-}"
 ACTIVATION_CODE="${OVERCOOKED_ACTIVATION_CODE:-}"