{"surfaces": [{"surface": "host:disk/", "observation": "healthy", "method": "local_artifact", "summary": "1001.9GB free, 90326294 days of runway", "source": "statvfs:/", "read_at": "2026-10-10T00:26:04.911333+00:00", "detail": {"free_bytes": 1075811184640, "free_gb": 1001.93, "total_gb": 1001.93, "pct_free": 100.0, "floor_gb": 5.0, "samples": 665, "slope_gb_per_day": -0.0, "runway_days": 90326294.2}, "held_since": "2026-10-10T00:26:04.911333+00:00", "held_seconds": 0.0}, {"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 8s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-10T00:26:03.410124+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-10T00:25:55.756005+00:00", "silent_for_seconds": 7.7, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-10T00:26:03.410124+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "52.9GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-10T00:25:55.451251+00:00", "detail": {"runway_days": null, "free_bytes": 56853344256, "floor_gb": 5.0, "pct_free": 23.2, "free_gb": 52.95, "samples": 2011, "slope_gb_per_day": 1.279, "total_gb": 228.27, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T12:07:24.985247+00:00", "held_seconds": 44310.5, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 13.4h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-10T00:25:55.451594+00:00", "detail": {"row_count": 60, "age_hours": 13.41, "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": "2026-10-09T12:07:24.985611+00:00", "held_seconds": 44310.5, "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": "2026-10-10T00:25:55.451792+00:00", "detail": {"age_hours": 0.1, "last_success": "2026-10-10T00:20:01.817708+00:00", "window_hours": 1.0, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-09T12:07:24.985787+00:00", "held_seconds": 44310.5, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 16.4h old (32 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-10T00:25:55.594339+00:00", "detail": {"age_hours": 16.43, "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": "2026-10-09T12:07:25.120180+00:00", "held_seconds": 44310.5, "reported_by": "kevin-mac"}, {"surface": "cron:comms-freshness", "observation": "healthy", "method": "reported", "summary": "last success 0.3h ago", "source": "comms-freshness-run.json", "read_at": "2026-10-10T00:25:55.594729+00:00", "detail": {"invoked_by": "interactive", "age_hours": 0.28, "alarm": true, "last_success": "2026-10-10T00:09:09.575952+00:00", "window_hours": 1.5, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-09T12:07:25.120479+00:00", "held_seconds": 44310.5, "reported_by": "kevin-mac"}, {"surface": "service:staging-queue", "observation": "fault", "method": "reported", "summary": "no successful run in 5.5h (window 0.5h)", "source": "staging-queue-heartbeat.json", "read_at": "2026-10-10T00:25:55.594986+00:00", "detail": {"http_code": 200, "age_hours": 5.48, "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": 17178.3, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 10.4h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-10T00:25:55.595204+00:00", "detail": {"invoked_by": "distributor", "age_hours": 10.43, "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": "2026-10-09T12:07:25.120582+00:00", "held_seconds": 44310.5, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 0.3h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-10T00:25:55.595383+00:00", "detail": {"age_hours": 0.3, "last_success": "2026-10-10T00:08:11.605063+00:00", "window_hours": 26.0, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-09T17:39:01.005293+00:00", "held_seconds": 24414.6, "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": "2026-10-10T00:25:55.595586+00:00", "detail": {"age_hours": 0.1, "changed": false, "bytes": 42714, "brand": "hackfw", "last_success": "2026-10-10T00:20:01.813679+00:00", "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T12:07:25.121062+00:00", "held_seconds": 44310.5, "reported_by": "kevin-mac"}, {"surface": "cron:digest-tmb", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", 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