diff --git a/scripts/build-dev-preview.sh b/scripts/build-dev-preview.sh
new file mode 100755
index 00000000..8f89dce8
--- /dev/null
+++ b/scripts/build-dev-preview.sh
@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+# Build this checkout as the offline demo for the standing dev preview: base /void/rat-dev/, the pretend
+# homeserver, scene tier $TIER (default full). Output: ./dist, ready for the shared publisher
+# (gamecult-ops scripts/publish-mind-preview.sh dist rat-dev), which owns publishing. Publishes nothing.
+set -euo pipefail
+cd "$(dirname "$0")/.."
+node scripts/sync-poses.mjs >/dev/null
+VITE_PREVIEW_DEMO=1 CINNY_BASE=/void/rat-dev/ NODE_OPTIONS=--max_old_space_size=4096 nice -n 10 npx vite build
+node scripts/preview-config.js "${TIER:-full}" --demo