{"surfaces": [{"surface": "host:disk/", "observation": "healthy", "method": "local_artifact", "summary": "1001.9GB free, 84664231 days of runway", "source": "statvfs:/", "read_at": "2026-10-10T10:40:31.213801+00:00", "detail": {"free_bytes": 1075811184640, "free_gb": 1001.93, "total_gb": 1001.93, "pct_free": 100.0, "floor_gb": 5.0, "samples": 757, "slope_gb_per_day": -0.0, "runway_days": 84664230.5}, "held_since": "2026-10-10T10:40:31.213801+00:00", "held_seconds": 0.0}, {"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 710s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-10T10:40:29.568192+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-10T10:28:39.975181+00:00", "silent_for_seconds": 709.6, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-10T10:40:29.568192+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "52.9GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-10T10:28:39.658731+00:00", "detail": {"runway_days": null, "free_bytes": 56850669568, "floor_gb": 5.0, "pct_free": 23.19, "free_gb": 52.95, "samples": 2011, "slope_gb_per_day": 1.237, "total_gb": 228.27, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T22:10:19.106177+00:00", "held_seconds": 44300.6, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 23.5h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-10T10:28:39.659017+00:00", "detail": {"row_count": 60, "age_hours": 23.46, "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": "2026-10-09T22:10:19.106603+00:00", "held_seconds": 44300.6, "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": "2026-10-10T10:28:39.659195+00:00", "detail": {"age_hours": 0.14, "last_success": "2026-10-10T10:20:01.142619+00:00", "window_hours": 1.0, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-09T22:10:19.106657+00:00", "held_seconds": 44300.6, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 2.5h old (32 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-10T10:28:39.797771+00:00", "detail": {"age_hours": 2.48, "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": "2026-10-09T22:10:19.247018+00:00", "held_seconds": 44300.6, "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": "2026-10-10T10:28:39.798125+00:00", "detail": {"invoked_by": "interactive", "age_hours": 0.32, "alarm": true, "last_success": "2026-10-10T10:09:13.943239+00:00", "window_hours": 1.5, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-09T22:10:19.247177+00:00", "held_seconds": 44300.6, "reported_by": "kevin-mac"}, {"surface": "service:staging-queue", "observation": "fault", "method": "reported", "summary": "no successful run in 15.5h (window 0.5h)", "source": "staging-queue-heartbeat.json", "read_at": "2026-10-10T10:28:39.798406+00:00", "detail": {"http_code": 200, "age_hours": 15.53, "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": "2026-10-09T22:10:19.247253+00:00", "held_seconds": 44300.6, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 20.5h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-10T10:28:39.798672+00:00", "detail": {"invoked_by": "distributor", "age_hours": 20.47, "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": "2026-10-09T22:10:19.247309+00:00", "held_seconds": 44300.6, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 5.8h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-10T10:28:39.798899+00:00", "detail": {"age_hours": 5.84, "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": "2026-10-09T22:10:19.247360+00:00", "held_seconds": 44300.6, "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": "2026-10-10T10:28:39.799121+00:00", "detail": {"age_hours": 0.14, "changed": false, "bytes": 42714, "brand": "hackfw", "last_success": "2026-10-10T10:20:00.984112+00:00", "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T22:10:19.247436+00:00", "held_seconds": 44300.6, "reported_by": "kevin-mac"}, {"surface": "cron:digest-tmb", "observation": "healthy", "method": "reported", "summary": "last success 0.1h 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