xint-installation-layout-data-outside-releases-for-upgrade-survival
xint’s versioned installation follows the pattern /opt/infra/xint/current/ → symlink to /opt/infra/xint/releases/<version>/. The runtime data/ directory must live at /opt/infra/xint/data/ (outside releases) and be symlinked into each release at releases/<version>/data. This ensures cost tracking, reliability metrics, OAuth tokens, and snapshots survive version upgrades without manual migration.