{"surfaces": [{"surface": "host:disk/", "observation": "healthy", "method": "local_artifact", "summary": "1001.9GB free, 92317034 days of runway", "source": "statvfs:/", "read_at": "2026-10-11T04:24:11.362489+00:00", "detail": {"free_bytes": 1075811184640, "free_gb": 1001.93, "total_gb": 1001.93, "pct_free": 100.0, "floor_gb": 5.0, "samples": 922, "slope_gb_per_day": -0.0, "runway_days": 92317033.9}, "held_since": "2026-10-11T04:24:11.362489+00:00", "held_seconds": 0.0}, {"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 354s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-11T04:24:09.899528+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-11T04:18:15.882339+00:00", "silent_for_seconds": 354.0, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-11T04:24:09.899528+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "49.1GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-11T04:18:15.680690+00:00", "detail": {"runway_days": null, "free_bytes": 52668719104, "floor_gb": 5.0, "pct_free": 21.49, "free_gb": 49.05, "samples": 2011, "slope_gb_per_day": 1.181, "total_gb": 228.27, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-10T16:00:11.193760+00:00", "held_seconds": 44284.5, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 17.3h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-11T04:18:15.680950+00:00", "detail": {"row_count": 61, "age_hours": 17.3, "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": "2026-10-10T16:00:11.194143+00:00", "held_seconds": 44284.5, "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": "2026-10-11T04:18:15.681122+00:00", "detail": {"age_hours": 0.14, "last_success": "2026-10-11T04:10:00.769617+00:00", "window_hours": 1.0, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-10T16:00:11.194200+00:00", "held_seconds": 44284.5, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 20.3h old (32 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-11T04:18:15.750164+00:00", "detail": {"age_hours": 20.3, "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": "2026-10-10T16:00:11.270560+00:00", "held_seconds": 44284.5, "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": "2026-10-11T04:18:15.750481+00:00", "detail": {"invoked_by": "interactive", "age_hours": 0.15, "alarm": true, "last_success": "2026-10-11T04:09:21.803325+00:00", "window_hours": 1.5, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-10T16:00:11.270906+00:00", "held_seconds": 44284.5, "reported_by": "kevin-mac"}, {"surface": "service:staging-queue", "observation": "fault", "method": "reported", "summary": "no successful run in 33.4h (window 0.5h)", "source": "staging-queue-heartbeat.json", "read_at": "2026-10-11T04:18:15.750709+00:00", "detail": {"http_code": 200, "age_hours": 33.36, "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": "2026-10-10T16:00:11.271274+00:00", "held_seconds": 44284.5, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 14.3h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-11T04:18:15.750901+00:00", "detail": {"invoked_by": "distributor", "age_hours": 14.29, "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": "2026-10-10T16:00:11.271456+00:00", "held_seconds": 44284.5, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 0.2h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-11T04:18:15.750943+00:00", "detail": {"age_hours": 0.17, "last_success": "2026-10-11T04:08:17.933222+00:00", "window_hours": 26.0, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-10T16:00:11.271787+00:00", "held_seconds": 44284.5, "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": "2026-10-11T04:18:15.751133+00:00", "detail": {"age_hours": 0.14, "changed": false, "bytes": 42714, "brand": "hackfw", "last_success": "2026-10-11T04:10:00.619415+00:00", "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-10T16:00:11.271857+00:00", "held_seconds": 44284.5, "reported_by": "kevin-mac"}, {"surface": "cron:digest-tmb", "observation": "healthy", "method": "reported", "summary": "last success 0.1h 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