백업/복구로직 변경, 깜빡임 버그 해결

scripts/backup/verify-dump.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "$script_dir/lib/common.sh"
+
+backup_dir="${BACKUP:-${1:-}}"
+[[ -n "$backup_dir" ]] || backup_die "BACKUP is required."
+backup_require_path "$backup_dir"
+backup_require_path "$backup_dir/manifest.json"
+
+if ! backup_verify_checksums "$backup_dir"; then
+  backup_die "checksum verification failed"
+fi
+
+backup_log "Dump verification passed: $backup_dir"