{"surfaces": [{"surface": "host:disk/", "observation": "healthy", "method": "local_artifact", "summary": "755.7GB free, 336365862 days of runway", "source": "statvfs:/", "read_at": "2026-09-26T14:11:30.129613+00:00", "detail": {"free_bytes": 811478810624, "free_gb": 755.75, "total_gb": 755.75, "pct_free": 100.0, "floor_gb": 5.0, "samples": 1448, "slope_gb_per_day": -0.0, "runway_days": 336365861.7}, "held_since": "2026-09-26T14:11:30.129613+00:00", "held_seconds": 0.0}, {"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 480s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-09-26T14:11:28.479451+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-09-26T14:03:28.835660+00:00", "silent_for_seconds": 479.6, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-09-26T14:11:28.479451+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "fault", "method": "reported", "summary": "14.1GB free but losing 0.91GB/day: hits the floor in 10.0 days", "source": "statvfs:/", "read_at": "2026-09-26T14:03:28.602749+00:00", "detail": {"pct_free": 6.19, "floor_gb": 5.0, "runway_days": 10.0, "free_gb": 14.14, "free_bytes": 15180226560, "slope_gb_per_day": -0.913, "total_gb": 228.27, "samples": 2011, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-09-26T01:45:32.036731+00:00", "held_seconds": 44276.6, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 3.0h ago", "source": "brief-send-log.jsonl", "read_at": "2026-09-26T14:03:28.603253+00:00", "detail": {"last_send_at": "2026-09-26T11:01:26.709275+00:00", "row_count": 47, "age_hours": 3.03, "window_hours": 30.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-09-26T01:45:32.037301+00:00", "held_seconds": 44276.6, "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": "2026-09-26T14:03:28.603584+00:00", "detail": {"last_success": "2026-09-26T14:00:01.264801+00:00", "age_hours": 0.06, "window_hours": 1.0, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-09-26T01:45:32.037737+00:00", "held_seconds": 44276.6, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 6.1h old (31 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-09-26T14:03:28.689011+00:00", "detail": {"newest_at": "2026-09-26T08:00:00+00:00", "age_hours": 6.06, "newest": "baserow_backup_20260926_030000.tar.gz", "backup_count": 31, "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-09-26T01:45:32.124671+00:00", "held_seconds": 44276.6, "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": "2026-09-26T14:03:28.689527+00:00", "detail": {"invoked_by": "interactive", "alarm": true, "last_success": "2026-09-26T13:58:13.556593+00:00", "age_hours": 0.09, "window_hours": 1.5, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-09-26T01:45:32.124990+00:00", "held_seconds": 44276.6, "reported_by": "kevin-mac"}, {"surface": "service:staging-queue", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "staging-queue-heartbeat.json", "read_at": "2026-09-26T14:03:28.689749+00:00", "detail": {"http_code": 200, "last_success": "2026-09-26T13:58:32+00:00", "age_hours": 0.08, "window_hours": 0.5, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-09-26T01:45:32.125179+00:00", "held_seconds": 44276.6, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-09-26T14:03:28.689952+00:00", "detail": {"invoked_by": "distributor", "last_success": "2026-09-26T14:02:49.625175+00:00", "age_hours": 0.01, "outcome": "posted", "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-09-26T01:45:32.125645+00:00", "held_seconds": 44276.6, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 9.5h ago", "source": "devpost-heartbeat.json", "read_at": "2026-09-26T14:03:28.690315+00:00", "detail": {"last_success": "2026-09-26T04:33:20.605551+00:00", "age_hours": 9.5, "window_hours": 26.0, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-09-26T01:45:32.125939+00:00", "held_seconds": 44276.6, "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": "2026-09-26T14:03:28.690760+00:00", "detail": {"brand": "hackfw", "changed": false, "last_success": "2026-09-26T14:00:01.088469+00:00", "bytes": 42714, "age_hours": 0.06, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-09-26T01:45:32.126350+00:00", "held_seconds": 44276.6, "reported_by": "kevin-mac"}, {"surface": "cron:digest-tmb", "observation": "healthy", "method": "reported", "summary": "last success 0.1h 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