{"surfaces": [{"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 22s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-16T08:37:15.592578+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-16T08:36:53.663289+00:00", "silent_for_seconds": 21.9, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-16T08:37:15.592578+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "53.1GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-16T08:36:53.322648+00:00", "detail": {"free_gb": 53.12, "pct_free": 23.27, "slope_gb_per_day": 0.143, "runway_days": null, "floor_gb": 5.0, "total_gb": 228.27, "samples": 2011, "free_bytes": 57041805312, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T20:18:42.086052+00:00", "held_seconds": 44291.2, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 21.6h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-16T08:36:53.323233+00:00", "detail": {"window_hours": 30.0, "row_count": 66, "last_send_at": "2026-10-15T11:02:30.411105+00:00", "age_hours": 21.57, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T20:18:42.086395+00:00", "held_seconds": 44291.2, "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": "2026-10-16T08:36:53.323692+00:00", "detail": {"last_success": "2026-10-16T08:30:00.906326+00:00", "window_hours": 1.0, "age_hours": 0.11, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-15T20:18:42.086540+00:00", "held_seconds": 44291.2, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 0.6h old (32 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-16T08:36:53.473274+00:00", "detail": {"backup_count": 32, "window_hours": 26.0, "newest_at": "2026-10-16T08:00:00+00:00", "newest": "baserow_backup_20261016_030000.tar.gz", "age_hours": 0.61, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T20:18:42.201987+00:00", "held_seconds": 44291.3, "reported_by": "kevin-mac"}, {"surface": "cron:comms-freshness", "observation": "healthy", "method": "reported", "summary": "last success 0.4h ago", "source": "comms-freshness-run.json", "read_at": "2026-10-16T08:36:53.473782+00:00", "detail": {"age_hours": 0.39, "last_success": "2026-10-16T08:13:20.945836+00:00", "window_hours": 1.5, "invoked_by": "scheduler", "alarm": true, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-15T20:18:42.202251+00:00", "held_seconds": 44291.3, "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": "2026-10-16T08:36:53.474014+00:00", "detail": {"http_code": 200, "last_success": "2026-10-16T08:31:54+00:00", "window_hours": 0.5, "age_hours": 0.08, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T20:18:42.202458+00:00", "held_seconds": 44291.3, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 16.1h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-16T08:36:53.474376+00:00", "detail": {"outcome": "posted", "last_success": "2026-10-15T16:30:03.026099+00:00", "window_hours": 26.0, "invoked_by": "cadence", "age_hours": 16.11, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T20:18:42.202612+00:00", "held_seconds": 44291.3, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 4.0h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-16T08:36:53.474722+00:00", "detail": {"last_success": "2026-10-16T04:38:46.733293+00:00", "window_hours": 26.0, "age_hours": 3.97, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-15T20:18:42.202751+00:00", "held_seconds": 44291.3, "reported_by": "kevin-mac"}, {"surface": "cron:digest-hackfw", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", 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"observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "fwdao-index.html.heartbeat.json", "read_at": "2026-10-16T08:36:53.475888+00:00", "detail": {"brand": "fwdao", "last_success": "2026-10-16T08:30:00.987008+00:00", "bytes": 56809, "window_hours": 1.0, "changed": false, "age_hours": 0.11, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T20:18:42.203169+00:00", "held_seconds": 44291.3, "reported_by": "kevin-mac"}, {"surface": "cron:door", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "index.html.heartbeat.json", "read_at": "2026-10-16T08:36:53.476203+00:00", "detail": {"brand": "door", "last_success": "2026-10-16T08:30:01.376443+00:00", "bytes": 12254, "window_hours": 1.0, "changed": false, "age_hours": 0.11, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T20:18:42.203418+00:00", 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