{"surfaces": [{"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 870s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-15T10:45:25.092514+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-15T10:30:54.842451+00:00", "silent_for_seconds": 870.3, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-15T10:45:25.092514+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "54.8GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-15T10:30:54.602231+00:00", "detail": {"free_gb": 54.85, "pct_free": 24.03, "slope_gb_per_day": 0.486, "runway_days": null, "floor_gb": 5.0, "total_gb": 228.27, "samples": 2011, "free_bytes": 58893398016, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-14T22:12:44.214686+00:00", "held_seconds": 44290.4, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 23.5h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-15T10:30:54.602516+00:00", "detail": {"window_hours": 30.0, "row_count": 65, "last_send_at": "2026-10-14T11:00:02.301904+00:00", "age_hours": 23.51, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-14T22:12:44.214922+00:00", "held_seconds": 44290.4, "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": "2026-10-15T10:30:54.602573+00:00", "detail": {"last_success": "2026-10-15T10:30:01.035903+00:00", "window_hours": 1.0, "age_hours": 0.01, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-14T22:12:44.215087+00:00", "held_seconds": 44290.4, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 2.5h old (31 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-15T10:30:54.738746+00:00", "detail": {"backup_count": 31, "window_hours": 26.0, "newest_at": "2026-10-15T08:00:00+00:00", "newest": "baserow_backup_20261015_030000.tar.gz", "age_hours": 2.52, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-14T22:12:44.357986+00:00", "held_seconds": 44290.4, "reported_by": "kevin-mac"}, {"surface": "cron:comms-freshness", "observation": "healthy", "method": "reported", "summary": "last success 0.3h ago", "source": "comms-freshness-run.json", "read_at": "2026-10-15T10:30:54.739087+00:00", "detail": {"age_hours": 0.3, "last_success": "2026-10-15T10:13:12.481616+00:00", "window_hours": 1.5, "invoked_by": "scheduler", "alarm": true, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-14T22:12:44.358382+00:00", "held_seconds": 44290.4, "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": "2026-10-15T10:30:54.739291+00:00", "detail": {"http_code": 200, "last_success": "2026-10-15T10:26:31+00:00", "window_hours": 0.5, "age_hours": 0.07, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-14T22:12:44.358619+00:00", "held_seconds": 44290.4, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 20.5h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-15T10:30:54.739494+00:00", "detail": {"outcome": "posted", "last_success": "2026-10-14T14:01:16.246323+00:00", "window_hours": 26.0, "invoked_by": "distributor", "age_hours": 20.49, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-14T22:12:44.358968+00:00", "held_seconds": 44290.4, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 5.9h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-15T10:30:54.739685+00:00", "detail": {"last_success": "2026-10-15T04:38:41.051613+00:00", "window_hours": 26.0, "age_hours": 5.87, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-14T22:12:44.359179+00:00", "held_seconds": 44290.4, "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": "2026-10-15T10:30:54.739757+00:00", "detail": {"brand": "hackfw", "last_success": "2026-10-15T10:30:00.848613+00:00", "bytes": 42714, "window_hours": 1.0, "changed": false, "age_hours": 0.01, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-14T22:12:44.359383+00:00", "held_seconds": 44290.4, "reported_by": "kevin-mac"}, {"surface": "cron:digest-tmb", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "tmb-index.html.heartbeat.json", "read_at": "2026-10-15T10:30:54.739810+00:00", "detail": {"brand": "tmb", "last_success": "2026-10-15T10:30:00.967315+00:00", "bytes": 37973, "window_hours": 1.0, "changed": false, "age_hours": 0.01, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-14T22:12:44.359583+00:00", "held_seconds": 44290.4, "reported_by": "kevin-mac"}, {"surface": "cron:digest-fwdao", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "fwdao-index.html.heartbeat.json", "read_at": "2026-10-15T10:30:54.739860+00:00", "detail": {"brand": "fwdao", "last_success": "2026-10-15T10:30:01.094933+00:00", "bytes": 56818, "window_hours": 1.0, "changed": false, "age_hours": 0.01, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-14T22:12:44.359777+00:00", "held_seconds": 44290.4, "reported_by": "kevin-mac"}, {"surface": "cron:door", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "index.html.heartbeat.json", "read_at": "2026-10-15T10:30:54.739910+00:00", "detail": {"brand": "door", "last_success": "2026-10-15T10:30:01.475918+00:00", "bytes": 12254, "window_hours": 1.0, "changed": false, "age_hours": 0.01, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-14T22:12:44.359964+00:00", "held_seconds": 44290.4, "reported_by": "kevin-mac"}], 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