{"surfaces": [{"surface": "host:disk/", "observation": "healthy", "method": "local_artifact", "summary": "1001.9GB free, 95556780 days of runway", "source": "statvfs:/", "read_at": "2026-10-11T08:30:33.514623+00:00", "detail": {"free_bytes": 1075811184640, "free_gb": 1001.93, "total_gb": 1001.93, "pct_free": 100.0, "floor_gb": 5.0, "samples": 961, "slope_gb_per_day": -0.0, "runway_days": 95556780.0}, "held_since": "2026-10-11T08:30:33.514623+00:00", "held_seconds": 0.0}, {"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 675s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-11T08:30:32.507358+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-11T08:19:17.665427+00:00", "silent_for_seconds": 674.8, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-11T08:30:32.507358+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "49.1GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-11T08:19:17.392702+00:00", "detail": {"runway_days": null, "free_bytes": 52681936896, "floor_gb": 5.0, "pct_free": 21.49, "free_gb": 49.06, "samples": 2011, "slope_gb_per_day": 1.156, "total_gb": 228.27, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-10T20:01:10.558425+00:00", "held_seconds": 44286.8, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 21.3h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-11T08:19:17.393193+00:00", "detail": {"row_count": 61, "age_hours": 21.32, "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": "2026-10-10T20:01:10.558817+00:00", "held_seconds": 44286.8, "reported_by": "kevin-mac"}, {"surface": "cron:gcal-sync", "observation": "healthy", "method": "reported", "summary": "last success 0.2h ago", "source": "gcal-sync-heartbeat.json", "read_at": "2026-10-11T08:19:17.393359+00:00", "detail": {"age_hours": 0.15, "last_success": "2026-10-11T08:10:01.515077+00:00", "window_hours": 1.0, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-10T20:01:10.558868+00:00", "held_seconds": 44286.8, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 0.3h old (32 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-11T08:19:17.535022+00:00", "detail": {"age_hours": 0.32, "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": "2026-10-10T20:01:10.700713+00:00", "held_seconds": 44286.8, "reported_by": "kevin-mac"}, {"surface": "cron:comms-freshness", "observation": "healthy", "method": "reported", "summary": "last success 0.2h ago", "source": "comms-freshness-run.json", "read_at": "2026-10-11T08:19:17.535361+00:00", "detail": {"invoked_by": "interactive", "age_hours": 0.17, "alarm": true, "last_success": "2026-10-11T08:09:23.278206+00:00", "window_hours": 1.5, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-10T20:01:10.701073+00:00", "held_seconds": 44286.8, "reported_by": "kevin-mac"}, {"surface": "service:staging-queue", "observation": "fault", "method": "reported", "summary": "no successful run in 37.4h (window 0.5h)", "source": "staging-queue-heartbeat.json", "read_at": "2026-10-11T08:19:17.535595+00:00", "detail": {"http_code": 200, "age_hours": 37.37, "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": "2026-10-10T20:01:10.701451+00:00", "held_seconds": 44286.8, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 18.3h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-11T08:19:17.535805+00:00", "detail": {"invoked_by": "distributor", "age_hours": 18.31, "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": "2026-10-10T20:01:10.701778+00:00", "held_seconds": 44286.8, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 3.7h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-11T08:19:17.535984+00:00", "detail": {"age_hours": 3.68, "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": "2026-10-10T20:01:10.702079+00:00", "held_seconds": 44286.8, "reported_by": "kevin-mac"}, {"surface": "cron:digest-hackfw", "observation": "healthy", "method": "reported", "summary": "last success 0.2h ago", "source": "index.html.heartbeat.json", "read_at": "2026-10-11T08:19:17.536187+00:00", "detail": {"age_hours": 0.15, "changed": false, "bytes": 42714, "brand": "hackfw", "last_success": "2026-10-11T08:10:01.364822+00:00", "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-10T20:01:10.702181+00:00", "held_seconds": 44286.8, "reported_by": "kevin-mac"}, {"surface": "cron:digest-tmb", "observation": "healthy", "method": "reported", "summary": "last success 0.2h 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