Add rsync_tree helper (personal subtrees excluded from --delete)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/sbo-batch-test b/sbo-batch-test
index a29461b..f2b9c14 100755
--- a/sbo-batch-test
+++ b/sbo-batch-test
@@ -331,6 +331,18 @@ rsync_excludes() {
   done
 }
 
+# rsync the SBo tree from SBO_RSYNC_URL into <root>, excluding every personal
+# subtree from transfer AND deletion. Flags match sbopkg's own rsync (files
+# root:root). Returns rsync's exit status; caller decides hard-fail vs warn.
+rsync_tree() {
+  local root="$1"
+  local excludes=()
+  mapfile -t excludes < <(rsync_excludes)
+  rsync -a --delete --no-owner --no-group \
+    "${excludes[@]}" \
+    "$SBO_RSYNC_URL/" "$root/"
+}
+
 # =============================================================================
 # Package cache. Persistent, on-disk store of built packages so unchanged deps
 # are installed from cache instead of rebuilt. Layout mirrors the SBo tree: