backup_template used a hardcoded _BACKUP_BASE_DIR=/var/lib/ci/backups; now derives <config.paths.root>/backups (matches the CLI --backup-base-dir default) per the plan's no-hardcoded-path gotcha. Tests no longer need to monkeypatch the constant.
backup_template used a hardcoded _BACKUP_BASE_DIR=/var/lib/ci/backups; now derives <config.paths.root>/backups (matches the CLI --backup-base-dir default) per the plan's no-hardcoded-path gotcha. Tests no longer need to monkeypatch the constant.