test

                    continue;

                }

                // Data is valid — safe to remove and re-store for correct placement

                // Data is valid — safe to re-store for correct placement.

                // SAFETY: store FIRST so correct blocks exist on correct nodes.

                // If this throws, original data remains on old nodes.

                scrub_client_->store(gid, data.data(), data.size());

                // Data is now safely placed. Remove all copies and re-store

                // for clean distribution without leftover misplaced blocks.

                try {

                    scrub_client_->remove(gid);

                    scrub_client_->store(gid, data.data(), data.size());

                } catch (const std::exception &ce) {

                    // Cleanup pass failed — data is still safe from the

                    // first store(). Misplaced blocks may remain.

                    std::cerr << "[SCRUB] group " << gid

                              << " — cleanup pass failed: " << ce.what()

                              << " (data is safe)" << std::endl;

                }

                result.groups_repaired++;

                std::cerr << "[SCRUB] group " << gid << " — repaired" << std::endl;