{"surfaces": [{"surface": "host:disk/", "observation": "healthy", "method": "local_artifact", "summary": "1001.9GB free, 89567653 days of runway", "source": "statvfs:/", "read_at": "2026-10-11T00:24:32.154748+00:00", "detail": {"free_bytes": 1075811184640, "free_gb": 1001.93, "total_gb": 1001.93, "pct_free": 100.0, "floor_gb": 5.0, "samples": 884, "slope_gb_per_day": -0.0, "runway_days": 89567653.1}, "held_since": "2026-10-11T00:24:32.154748+00:00", "held_seconds": 0.0}, {"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 435s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-11T00:24:30.589196+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-11T00:17:15.114262+00:00", "silent_for_seconds": 435.5, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-11T00:24:30.589196+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "53.1GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-11T00:17:14.836990+00:00", "detail": {"runway_days": null, "free_bytes": 57006895104, "floor_gb": 5.0, "pct_free": 23.26, "free_gb": 53.09, "samples": 2011, "slope_gb_per_day": 1.203, "total_gb": 228.27, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-10T11:59:03.641265+00:00", "held_seconds": 44291.2, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 13.3h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-11T00:17:14.837265+00:00", "detail": {"row_count": 61, "age_hours": 13.29, "last_send_at": "2026-10-10T11:00:04.444077+00:00", "window_hours": 30.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-10T11:59:03.641520+00:00", "held_seconds": 44291.2, "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": "2026-10-11T00:17:14.837455+00:00", "detail": {"age_hours": 0.12, "last_success": "2026-10-11T00:10:01.890259+00:00", "window_hours": 1.0, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-10T11:59:03.641678+00:00", "held_seconds": 44291.2, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 16.3h old (32 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-11T00:17:14.982782+00:00", "detail": {"age_hours": 16.29, "newest": "baserow_backup_20261010_030000.tar.gz", "newest_at": "2026-10-10T08:00:00+00:00", "backup_count": 32, "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-10T11:59:03.761259+00:00", "held_seconds": 44291.2, "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": "2026-10-11T00:17:14.983160+00:00", "detail": {"invoked_by": "interactive", "age_hours": 0.13, "alarm": true, "last_success": "2026-10-11T00:09:19.957140+00:00", "window_hours": 1.5, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-10T11:59:03.761541+00:00", "held_seconds": 44291.2, "reported_by": "kevin-mac"}, {"surface": "service:staging-queue", "observation": "fault", "method": "reported", "summary": "no successful run in 29.3h (window 0.5h)", "source": "staging-queue-heartbeat.json", "read_at": "2026-10-11T00:17:14.983403+00:00", "detail": {"http_code": 200, "age_hours": 29.34, "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": "2026-10-10T11:59:03.761734+00:00", "held_seconds": 44291.2, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 10.3h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-11T00:17:14.983849+00:00", "detail": {"invoked_by": "distributor", "age_hours": 10.27, "last_success": "2026-10-10T14:00:52.098934+00:00", "outcome": "posted", "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-10T11:59:03.761910+00:00", "held_seconds": 44291.2, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-11T00:17:14.984098+00:00", "detail": {"age_hours": 0.15, "last_success": "2026-10-11T00:08:17.030465+00:00", "window_hours": 26.0, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-10T11:59:03.762054+00:00", "held_seconds": 44291.2, "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": "2026-10-11T00:17:14.984315+00:00", "detail": {"age_hours": 0.12, "changed": false, "bytes": 42714, "brand": "hackfw", "last_success": "2026-10-11T00:10:01.695637+00:00", "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-10T11:59:03.762208+00:00", "held_seconds": 44291.2, "reported_by": "kevin-mac"}, {"surface": "cron:digest-tmb", "observation": "healthy", "method": "reported", "summary": "last success 0.1h 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