{"surfaces": [{"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 272s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-16T16:28:39.783583+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-16T16:24:08.163688+00:00", "silent_for_seconds": 271.6, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-16T16:28:39.783583+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "53.1GB free, 16867 days of runway", "source": "statvfs:/", "read_at": "2026-10-16T16:24:07.836286+00:00", "detail": {"free_gb": 53.07, "pct_free": 23.25, "slope_gb_per_day": -0.003, "runway_days": 16867.2, "floor_gb": 5.0, "total_gb": 228.27, "samples": 2011, "free_bytes": 56980017152, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T04:05:45.502811+00:00", "held_seconds": 44302.3, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 5.3h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-16T16:24:07.836642+00:00", "detail": {"window_hours": 30.0, "row_count": 67, "last_send_at": "2026-10-16T11:03:23.243564+00:00", "age_hours": 5.35, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T04:05:45.502897+00:00", "held_seconds": 44302.3, "reported_by": "kevin-mac"}, {"surface": "cron:gcal-sync", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "gcal-sync-heartbeat.json", "read_at": "2026-10-16T16:24:07.836694+00:00", "detail": {"last_success": "2026-10-16T16:20:00.970309+00:00", "window_hours": 1.0, "age_hours": 0.07, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-16T04:05:45.503122+00:00", "held_seconds": 44302.3, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 8.4h old (32 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-16T16:24:07.973721+00:00", "detail": {"backup_count": 32, "window_hours": 26.0, "newest_at": "2026-10-16T08:00:00+00:00", "newest": "baserow_backup_20261016_030000.tar.gz", "age_hours": 8.4, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T04:05:45.634237+00:00", "held_seconds": 44302.3, "reported_by": "kevin-mac"}, {"surface": "cron:comms-freshness", "observation": "healthy", "method": "reported", "summary": "last success 0.2h ago", "source": "comms-freshness-run.json", "read_at": "2026-10-16T16:24:07.974166+00:00", "detail": {"age_hours": 0.18, "last_success": "2026-10-16T16:13:24.415244+00:00", "window_hours": 1.5, "invoked_by": "scheduler", "alarm": true, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-16T04:05:45.634593+00:00", "held_seconds": 44302.3, "reported_by": "kevin-mac"}, {"surface": "service:staging-queue", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "staging-queue-heartbeat.json", "read_at": "2026-10-16T16:24:07.974233+00:00", "detail": {"http_code": 200, "last_success": "2026-10-16T16:22:02+00:00", "window_hours": 0.5, "age_hours": 0.03, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T04:05:45.634667+00:00", "held_seconds": 44302.3, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 2.4h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-16T16:24:07.974507+00:00", "detail": {"outcome": "posted", "last_success": "2026-10-16T14:01:35.082122+00:00", "window_hours": 26.0, "invoked_by": "distributor", "age_hours": 2.38, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T04:05:45.634884+00:00", "held_seconds": 44302.3, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 11.8h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-16T16:24:07.974813+00:00", "detail": {"last_success": "2026-10-16T04:38:46.733293+00:00", "window_hours": 26.0, "age_hours": 11.76, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-16T04:05:45.635067+00:00", "held_seconds": 44302.3, "reported_by": "kevin-mac"}, {"surface": "cron:digest-hackfw", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "index.html.heartbeat.json", "read_at": "2026-10-16T16:24:07.974892+00:00", "detail": {"brand": "hackfw", "last_success": "2026-10-16T16:20:00.742582+00:00", "bytes": 42714, "window_hours": 1.0, "changed": false, "age_hours": 0.07, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T04:05:45.635261+00:00", "held_seconds": 44302.3, "reported_by": "kevin-mac"}, {"surface": "cron:digest-tmb", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "tmb-index.html.heartbeat.json", "read_at": "2026-10-16T16:24:07.974944+00:00", "detail": {"brand": "tmb", "last_success": "2026-10-16T16:20:00.865283+00:00", "bytes": 37973, "window_hours": 1.0, "changed": false, "age_hours": 0.07, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T04:05:45.635449+00:00", "held_seconds": 44302.3, "reported_by": "kevin-mac"}, {"surface": "cron:digest-fwdao", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "fwdao-index.html.heartbeat.json", "read_at": "2026-10-16T16:24:07.974989+00:00", "detail": {"brand": "fwdao", "last_success": "2026-10-16T16:20:01.011599+00:00", "bytes": 57574, "window_hours": 1.0, "changed": false, "age_hours": 0.07, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T04:05:45.636200+00:00", "held_seconds": 44302.3, "reported_by": "kevin-mac"}, {"surface": "cron:door", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "index.html.heartbeat.json", "read_at": "2026-10-16T16:24:07.975032+00:00", "detail": {"brand": "door", "last_success": "2026-10-16T16:20:01.377039+00:00", "bytes": 12254, "window_hours": 1.0, "changed": false, "age_hours": 0.07, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T04:05:45.636417+00:00", "held_seconds": 44302.3, "reported_by": "kevin-mac"}], 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