The snapshot object

{
  "id": "snap-20260623T160955Z-pre-upgrade",
  "name": "pre-upgrade",
  "description": "Before the 1.2.0 controller rollout",
  "tags": ["golden"],
  "kind": "manual",
  "created_at": 1782700000.0,
  "created_by": "jdoe",
  "qt_version": "0.9.11",
  "core_version": "0.9.0",
  "schema_version": 1,
  "content_hash": "sha256:4f1a…",
  "captured": { "qt_settings": {}, "controller_config": {}, "vpp_startup_conf": "", "grub_cmdline": "", "sysctl_hugepages": "" },
  "warnings": ["Contains RADIUS shared secrets and captive-portal credentials. Treat as sensitive."]
}

The identifier encodes the capture time and a slug of the name, which makes a
directory listing chronologically sortable and human-readable.

qt_version and core_version record the software that produced the snapshot,
so a restored configuration carries the provenance of its origin.