Build Packwiz hashes in published images

scripts/build-site.sh

@@ -8,10 +8,16 @@ repo_root=$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)
 cd "$repo_root"
 
 dev_ref=${1:-HEAD}
+packwiz_bin=${PACKWIZ_BIN:-packwiz}
 build_root="$repo_root/.build"
 site_root="$build_root/site"
 work_root="$build_root/work"
 
+if ! command -v "$packwiz_bin" >/dev/null 2>&1; then
+  echo "Packwiz executable not found: $packwiz_bin" >&2
+  exit 1
+fi
+
 rm -rf "$site_root" "$work_root"
 mkdir -p "$site_root/forever/releases" "$work_root"
 
@@ -30,6 +36,13 @@ export_pack() {
 
   git archive "$revision" "$pack" | tar -x -C "$scratch"
   mv "$scratch/$pack" "$destination"
+
+  # Source packs intentionally omit internal hashes. Generate the distributable
+  # index only in the ephemeral image-build tree, never in the Git checkout.
+  (
+    cd "$destination"
+    "$packwiz_bin" refresh --build
+  )
 }
 
 # main is always the development source, including when this script runs for a