{"surfaces": [{"surface": "host:disk/", "observation": "healthy", "method": "local_artifact", "summary": "1001.9GB free, 168173467 days of runway", "source": "statvfs:/", "read_at": "2026-10-09T12:34:06.498037+00:00", "detail": {"free_bytes": 1075811184640, "free_gb": 1001.93, "total_gb": 1001.93, "pct_free": 100.0, "floor_gb": 5.0, "samples": 554, "slope_gb_per_day": -0.0, "runway_days": 168173466.9}, "held_since": "2026-10-09T12:34:06.498037+00:00", "held_seconds": 0.0}, {"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 695s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-09T12:34:05.043366+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-09T12:22:29.766966+00:00", "silent_for_seconds": 695.3, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-09T12:34:05.043366+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "53.0GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-09T12:22:29.540402+00:00", "detail": {"runway_days": null, "free_bytes": 56956203008, "floor_gb": 5.0, "pct_free": 23.24, "free_gb": 53.04, "samples": 2011, "slope_gb_per_day": 1.328, "total_gb": 228.27, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T00:03:55.369653+00:00", "held_seconds": 44314.2, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 1.4h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-09T12:22:29.540474+00:00", "detail": {"row_count": 60, "age_hours": 1.36, "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": "2026-10-09T00:03:55.369911+00:00", "held_seconds": 44314.2, "reported_by": "kevin-mac"}, {"surface": "cron:gcal-sync", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "gcal-sync-heartbeat.json", "read_at": "2026-10-09T12:22:29.540518+00:00", "detail": {"age_hours": 0.04, "last_success": "2026-10-09T12:20:01.831819+00:00", "window_hours": 1.0, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-09T00:03:55.369961+00:00", "held_seconds": 44314.2, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 4.4h old (32 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-09T12:22:29.611166+00:00", "detail": {"age_hours": 4.37, "newest": "baserow_backup_20261009_030001.tar.gz", "newest_at": "2026-10-09T08:00:01+00:00", "backup_count": 32, "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T00:03:55.513768+00:00", "held_seconds": 44314.1, "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": "2026-10-09T12:22:29.611288+00:00", "detail": {"invoked_by": "interactive", "age_hours": 0.22, "alarm": true, "last_success": "2026-10-09T12:09:04.245725+00:00", "window_hours": 1.5, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-09T00:03:55.514119+00:00", "held_seconds": 44314.1, "reported_by": "kevin-mac"}, {"surface": "service:staging-queue", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "staging-queue-heartbeat.json", "read_at": "2026-10-09T12:22:29.611329+00:00", "detail": {"http_code": 200, "age_hours": 0.01, "last_success": "2026-10-09T12:21:46+00:00", "window_hours": 0.5, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T00:03:55.514192+00:00", "held_seconds": 44314.1, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 0.4h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-09T12:22:29.611368+00:00", "detail": {"invoked_by": "cadence", "age_hours": 0.36, "last_success": "2026-10-09T12:01:10.276104+00:00", "outcome": "posted", "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T00:03:55.514410+00:00", "held_seconds": 44314.1, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "fault", "method": "reported", "summary": "no successful run in 31.7h (window 26h)", "source": "devpost-heartbeat.json", "read_at": "2026-10-09T12:22:29.611409+00:00", "detail": {"age_hours": 31.74, "last_success": "2026-10-08T04:38:01.847258+00:00", "window_hours": 26.0, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-09T06:50:51.913658+00:00", "held_seconds": 19897.7, "reported_by": "kevin-mac"}, {"surface": "cron:digest-hackfw", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "index.html.heartbeat.json", "read_at": "2026-10-09T12:22:29.611461+00:00", "detail": {"age_hours": 0.04, "changed": false, "bytes": 42714, "brand": "hackfw", "last_success": "2026-10-09T12:20:00.988035+00:00", "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T00:03:55.514692+00:00", "held_seconds": 44314.1, "reported_by": "kevin-mac"}, {"surface": "cron:digest-tmb", "observation": "healthy", "method": "reported", "summary": "last success 0.0h 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