Get Grouped Freshness

Tenant's datasets bucketed into UI display groups.

Every timestamp is unix epoch seconds; generated_at carries the server clock so the client can render relative times against it. Internal pipeline dataset_types (ingestion-plumbing sentinels, config-sync jobs) are excluded from the response entirely; dbt transform runs classify to "altimate_transforms", which is hidden from this feed. A databricks tenant always gets groups: [] — the databricks taxonomy classifies every dataset_type to None until it is authored. Groups in HIDDEN_FROM_TENANT_GROUPS are omitted from this feed and remain visible only on the internal dashboard.

Gated by the enableSystemStatus tenant_info flag: a tenant without it gets 404, not an empty payload, so a disabled feature is indistinguishable from one that was never built.