{"surfaces": [{"surface": "host:disk/", "observation": "healthy", "method": "local_artifact", "summary": "1001.9GB free, 97176937 days of runway", "source": "statvfs:/", "read_at": "2026-10-11T10:35:31.038294+00:00", "detail": {"free_bytes": 1075811184640, "free_gb": 1001.93, "total_gb": 1001.93, "pct_free": 100.0, "floor_gb": 5.0, "samples": 979, "slope_gb_per_day": -0.0, "runway_days": 97176937.0}, "held_since": "2026-10-11T10:35:31.038294+00:00", "held_seconds": 0.0}, {"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 35s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-11T10:35:29.875348+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-11T10:34:54.430618+00:00", "silent_for_seconds": 35.4, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-11T10:35:29.875348+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "49.1GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-11T10:34:54.117947+00:00", "detail": {"runway_days": null, "free_bytes": 52710154240, "floor_gb": 5.0, "pct_free": 21.5, "free_gb": 49.09, "samples": 2011, "slope_gb_per_day": 1.143, "total_gb": 228.27, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-10T22:16:44.987035+00:00", "held_seconds": 44289.1, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 23.6h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-11T10:34:54.118221+00:00", "detail": {"row_count": 61, "age_hours": 23.58, "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": "2026-10-10T22:16:44.987539+00:00", "held_seconds": 44289.1, "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": "2026-10-11T10:34:54.118389+00:00", "detail": {"age_hours": 0.08, "last_success": "2026-10-11T10:30:00.946814+00:00", "window_hours": 1.0, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-10T22:16:44.987598+00:00", "held_seconds": 44289.1, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 2.6h old (32 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-11T10:34:54.263383+00:00", "detail": {"age_hours": 2.58, "newest": "baserow_backup_20261011_030000.tar.gz", "newest_at": "2026-10-11T08:00:00+00:00", "backup_count": 32, "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-10T22:16:45.126065+00:00", "held_seconds": 44289.1, "reported_by": "kevin-mac"}, {"surface": "cron:comms-freshness", "observation": "healthy", "method": "reported", "summary": "last success 0.4h ago", "source": "comms-freshness-run.json", "read_at": "2026-10-11T10:34:54.263723+00:00", "detail": {"invoked_by": "interactive", "age_hours": 0.43, "alarm": true, "last_success": "2026-10-11T10:09:24.191868+00:00", "window_hours": 1.5, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-10T22:16:45.126220+00:00", "held_seconds": 44289.1, "reported_by": "kevin-mac"}, {"surface": "service:staging-queue", "observation": "fault", "method": "reported", "summary": "no successful run in 39.6h (window 0.5h)", "source": "staging-queue-heartbeat.json", "read_at": "2026-10-11T10:34:54.263947+00:00", "detail": {"http_code": 200, "age_hours": 39.63, "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": "2026-10-10T22:16:45.126285+00:00", "held_seconds": 44289.1, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 20.6h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-11T10:34:54.264164+00:00", "detail": {"invoked_by": "distributor", "age_hours": 20.57, "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": "2026-10-10T22:16:45.126339+00:00", "held_seconds": 44289.1, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 5.9h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-11T10:34:54.264356+00:00", "detail": {"age_hours": 5.94, "last_success": "2026-10-11T04:38:18.078373+00:00", "window_hours": 26.0, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-10T22:16:45.126392+00:00", "held_seconds": 44289.1, "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": "2026-10-11T10:34:54.264556+00:00", "detail": {"age_hours": 0.08, "changed": false, "bytes": 42714, "brand": "hackfw", "last_success": "2026-10-11T10:30:00.749181+00:00", "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-10T22:16:45.126458+00:00", "held_seconds": 44289.1, "reported_by": "kevin-mac"}, {"surface": "cron:digest-tmb", "observation": "healthy", "method": "reported", "summary": "last success 0.1h 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