{"surfaces": [{"surface": "host:disk/", "observation": "healthy", "method": "local_artifact", "summary": "1001.9GB free, 84787770 days of runway", "source": "statvfs:/", "read_at": "2026-10-10T12:23:53.048167+00:00", "detail": {"free_bytes": 1075811184640, "free_gb": 1001.93, "total_gb": 1001.93, "pct_free": 100.0, "floor_gb": 5.0, "samples": 774, "slope_gb_per_day": -0.0, "runway_days": 84787769.7}, "held_since": "2026-10-10T12:23:53.048167+00:00", "held_seconds": 0.0}, {"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 583s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-10T12:23:51.549996+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-10T12:14:08.287325+00:00", "silent_for_seconds": 583.3, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-10T12:23:51.549996+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "52.9GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-10T12:14:07.979649+00:00", "detail": {"runway_days": null, "free_bytes": 56837144576, "floor_gb": 5.0, "pct_free": 23.19, "free_gb": 52.93, "samples": 2011, "slope_gb_per_day": 1.234, "total_gb": 228.27, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T23:55:47.389771+00:00", "held_seconds": 44300.6, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 1.2h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-10T12:14:07.979913+00:00", "detail": {"row_count": 61, "age_hours": 1.23, "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": "2026-10-09T23:55:47.390070+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": "2026-10-10T12:14:07.979972+00:00", "detail": {"age_hours": 0.07, "last_success": "2026-10-10T12:10:01.287637+00:00", "window_hours": 1.0, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-09T23:55:47.390264+00:00", "held_seconds": 44300.6, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 4.2h old (32 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-10T12:14:08.124469+00:00", "detail": {"age_hours": 4.24, "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": "2026-10-09T23:55:47.518742+00:00", "held_seconds": 44300.6, "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": "2026-10-10T12:14:08.124628+00:00", "detail": {"invoked_by": "interactive", "age_hours": 0.08, "alarm": true, "last_success": "2026-10-10T12:09:14.846541+00:00", "window_hours": 1.5, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-09T23:55:47.519104+00:00", "held_seconds": 44300.6, "reported_by": "kevin-mac"}, {"surface": "service:staging-queue", "observation": "fault", "method": "reported", "summary": "no successful run in 17.3h (window 0.5h)", "source": "staging-queue-heartbeat.json", "read_at": "2026-10-10T12:14:08.124693+00:00", "detail": 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"2026-10-10T12:14:08.124797+00:00", "detail": {"age_hours": 7.6, "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": "2026-10-09T23:55:47.519712+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": "2026-10-10T12:14:08.124863+00:00", "detail": {"age_hours": 0.07, "changed": false, "bytes": 42714, "brand": "hackfw", "last_success": "2026-10-10T12:10:01.121684+00:00", "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T23:55:47.519902+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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