{"surfaces": [{"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 8s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-11T22:23:25.836992+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-11T22:23:18.057559+00:00", "silent_for_seconds": 7.8, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-11T22:23:25.836992+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "55.8GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-11T22:23:17.790700+00:00", "detail": {"slope_gb_per_day": 1.09, "free_gb": 55.84, "free_bytes": 59959668736, "pct_free": 24.46, "samples": 2011, "floor_gb": 5.0, "runway_days": null, "total_gb": 228.27, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-11T10:04:46.560921+00:00", "held_seconds": 44311.2, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 11.4h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-11T22:23:17.790990+00:00", "detail": {"age_hours": 11.39, "row_count": 62, "last_send_at": "2026-10-11T11:00:08.254527+00:00", "window_hours": 30.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-11T10:04:46.561173+00:00", "held_seconds": 44311.2, "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": "2026-10-11T22:23:17.791169+00:00", "detail": {"age_hours": 0.05, "last_success": "2026-10-11T22:20:01.641945+00:00", "window_hours": 1.0, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-11T10:04:46.561332+00:00", "held_seconds": 44311.2, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 14.4h old (32 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-11T22:23:17.944672+00:00", "detail": {"age_hours": 14.39, "newest": "baserow_backup_20261011_030000.tar.gz", "backup_count": 32, "newest_at": "2026-10-11T08:00:00+00:00", "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-11T10:04:46.678551+00:00", "held_seconds": 44311.3, "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": "2026-10-11T22:23:17.945064+00:00", "detail": {"age_hours": 0.18, "last_success": "2026-10-11T22:12:38.129811+00:00", "alarm": true, "invoked_by": "scheduler", "window_hours": 1.5, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-11T10:04:46.678836+00:00", "held_seconds": 44311.3, "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": "2026-10-11T22:23:17.945288+00:00", "detail": {"age_hours": 0.05, "last_success": "2026-10-11T22:20:05+00:00", "http_code": 200, "window_hours": 0.5, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-11T16:36:38.191424+00:00", "held_seconds": 20799.8, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 8.4h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-11T22:23:17.945356+00:00", "detail": {"age_hours": 8.38, "last_success": "2026-10-11T14:00:16.044472+00:00", "invoked_by": "distributor", "outcome": "posted", "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-11T10:04:46.679192+00:00", "held_seconds": 44311.3, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 0.2h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-11T22:23:17.945423+00:00", "detail": {"age_hours": 0.25, "last_success": "2026-10-11T22:08:23.046450+00:00", "window_hours": 26.0, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-11T10:04:46.679342+00:00", "held_seconds": 44311.3, "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": "2026-10-11T22:23:17.945675+00:00", "detail": {"brand": "hackfw", "age_hours": 0.05, "last_success": "2026-10-11T22:20:01.426855+00:00", "changed": false, "bytes": 42714, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-11T10:04:46.679501+00:00", "held_seconds": 44311.3, "reported_by": "kevin-mac"}, {"surface": "cron:digest-tmb", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "tmb-index.html.heartbeat.json", "read_at": "2026-10-11T22:23:17.945895+00:00", "detail": {"brand": "tmb", "age_hours": 0.05, "last_success": "2026-10-11T22:20:01.542873+00:00", "changed": false, "bytes": 37973, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-11T10:04:46.679682+00:00", "held_seconds": 44311.3, "reported_by": "kevin-mac"}, {"surface": "cron:digest-fwdao", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "fwdao-index.html.heartbeat.json", "read_at": "2026-10-11T22:23:17.946925+00:00", "detail": {"brand": "fwdao", "age_hours": 0.05, "last_success": "2026-10-11T22:20:01.682361+00:00", "changed": false, "bytes": 56584, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-11T10:04:46.680381+00:00", "held_seconds": 44311.3, "reported_by": "kevin-mac"}, {"surface": "cron:door", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "index.html.heartbeat.json", "read_at": "2026-10-11T22:23:17.947140+00:00", "detail": {"brand": "door", "age_hours": 0.05, "last_success": "2026-10-11T22:20:02.113309+00:00", "changed": false, "bytes": 12254, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-11T10:04:46.680471+00:00", "held_seconds": 44311.3, "reported_by": "kevin-mac"}], 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