{"surfaces": [{"surface": "host:disk/", "observation": "healthy", "method": "local_artifact", "summary": "1001.9GB free, 85400874 days of runway", "source": "statvfs:/", "read_at": "2026-10-10T06:26:11.969678+00:00", "detail": {"free_bytes": 1075811184640, "free_gb": 1001.93, "total_gb": 1001.93, "pct_free": 100.0, "floor_gb": 5.0, "samples": 719, "slope_gb_per_day": -0.0, "runway_days": 85400874.1}, "held_since": "2026-10-10T06:26:11.969678+00:00", "held_seconds": 0.0}, {"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 820s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-10T06:26:10.631505+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-10T06:12:30.242604+00:00", "silent_for_seconds": 820.4, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-10T06:26:10.631505+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "52.9GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-10T06:12:29.984055+00:00", "detail": {"runway_days": null, "free_bytes": 56832479232, "floor_gb": 5.0, "pct_free": 23.19, "free_gb": 52.93, "samples": 2011, "slope_gb_per_day": 1.252, "total_gb": 228.27, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T17:54:05.896495+00:00", "held_seconds": 44304.1, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 19.2h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-10T06:12:29.984628+00:00", "detail": {"row_count": 60, "age_hours": 19.19, "last_send_at": "2026-10-09T11:01:11.351283+00:00", "window_hours": 30.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T17:54:05.896968+00:00", "held_seconds": 44304.1, "reported_by": "kevin-mac"}, {"surface": "cron:gcal-sync", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "gcal-sync-heartbeat.json", "read_at": "2026-10-10T06:12:29.984687+00:00", "detail": {"age_hours": 0.04, "last_success": "2026-10-10T06:10:01.705004+00:00", "window_hours": 1.0, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-09T17:54:05.897018+00:00", "held_seconds": 44304.1, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 22.2h old (32 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-10T06:12:30.108684+00:00", "detail": {"age_hours": 22.21, "newest": "baserow_backup_20261009_030001.tar.gz", "newest_at": "2026-10-09T08:00:01+00:00", "backup_count": 32, "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T17:54:06.024477+00:00", "held_seconds": 44304.1, "reported_by": "kevin-mac"}, {"surface": "cron:comms-freshness", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "comms-freshness-run.json", "read_at": "2026-10-10T06:12:30.108815+00:00", "detail": {"invoked_by": "interactive", "age_hours": 0.05, "alarm": true, "last_success": "2026-10-10T06:09:12.202761+00:00", "window_hours": 1.5, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-09T17:54:06.024790+00:00", "held_seconds": 44304.1, "reported_by": "kevin-mac"}, {"surface": "service:staging-queue", "observation": "fault", "method": "reported", "summary": "no successful run in 11.3h (window 0.5h)", "source": "staging-queue-heartbeat.json", "read_at": "2026-10-10T06:12:30.108881+00:00", "detail": {"http_code": 200, "age_hours": 11.26, "last_success": "2026-10-09T18:56:53+00:00", "window_hours": 0.5, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T19:39:37.251177+00:00", "held_seconds": 37972.9, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 16.2h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-10T06:12:30.108923+00:00", "detail": {"invoked_by": "distributor", "age_hours": 16.2, "last_success": "2026-10-09T14:00:16.609371+00:00", "outcome": "posted", "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T17:54:06.025135+00:00", "held_seconds": 44304.1, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 1.6h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-10T06:12:30.108963+00:00", "detail": {"age_hours": 1.57, "last_success": "2026-10-10T04:38:12.549305+00:00", "window_hours": 26.0, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-09T17:54:06.025317+00:00", "held_seconds": 44304.1, "reported_by": "kevin-mac"}, {"surface": "cron:digest-hackfw", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "index.html.heartbeat.json", "read_at": "2026-10-10T06:12:30.109019+00:00", "detail": {"age_hours": 0.04, "changed": false, "bytes": 42714, "brand": "hackfw", "last_success": "2026-10-10T06:10:01.586859+00:00", "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T17:54:06.025376+00:00", "held_seconds": 44304.1, "reported_by": "kevin-mac"}, {"surface": "cron:digest-tmb", "observation": "healthy", "method": "reported", "summary": "last success 0.0h 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