Add host-level checks for address, enabled state, SSH credential
selection, and backup directory readiness, and show them on the host
detail page.
Create host backup directories during host creation and prefill new
hosts from the default global config.
Add a staff-only logs view backed by journalctl with filtering by
pobsync unit, priority, and message text.
Improve runtime checks for gunicorn in virtualenv installs and ensure
the native installer grants the service user access to the backup root.
Expand the systemd installer so it can perform a complete native
installation with sensible defaults: copy the checkout into the target
app directory, create runtime directories, write the environment file,
install dependencies, configure systemd units, and optionally configure
nginx.
Add a staff-only Django self-check page that verifies runtime settings,
required binaries, writable paths, database connectivity, global config
state, and systemd service status when available.
Document installer overrides and expose the self-check from the main
navigation.
