PackUpgradedevent type

Installed pack was upgraded. Minor upgrades auto-apply; major version bumps require a migration_spec_ref per Q8.

Full spec

{
  "name": "PackUpgraded",
  "description": "Installed pack was upgraded. Minor upgrades auto-apply; major version bumps require a migration_spec_ref per Q8.",
  "current_version": 1,
  "actor_type_allowed": [
    "human"
  ],
  "object_type": "WorkstreamPack",
  "payload_versions": {
    "v1": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "pack_id",
        "old_version",
        "new_version",
        "upgrade_kind",
        "upgraded_by"
      ],
      "properties": {
        "pack_id": {
          "type": "string",
          "format": "uuid"
        },
        "old_version": {
          "type": "string",
          "pattern": "^\\d+\\.\\d+\\.\\d+$"
        },
        "new_version": {
          "type": "string",
          "pattern": "^\\d+\\.\\d+\\.\\d+$"
        },
        "upgrade_kind": {
          "type": "string",
          "enum": [
            "patch",
            "minor",
            "major"
          ]
        },
        "migration_spec_ref": {
          "type": [
            "string",
            "null"
          ],
          "description": "Q8: required for major version bumps; references the published migration spec (R2 artifact key)."
        },
        "new_registry_version_hash": {
          "type": "string",
          "minLength": 1
        },
        "upgraded_by": {
          "type": "string",
          "format": "uuid"
        }
      }
    }
  },
  "projections_consuming": [
    "installed_packs_view",
    "tenant_overrides_view",
    "audit_log"
  ],
  "canonicalizer_module": "event-canonicalizers/pack_upgraded.ts"
}