{"surfaces": [{"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 373s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-17T12:20:30.551683+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-17T12:14:17.634340+00:00", "silent_for_seconds": 372.9, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-17T12:20:30.551683+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "52.5GB free, 92 days of runway", "source": "statvfs:/", "read_at": "2026-10-17T12:14:17.345090+00:00", "detail": {"free_gb": 52.55, "pct_free": 23.02, "slope_gb_per_day": -0.516, "runway_days": 92.2, "floor_gb": 5.0, "total_gb": 228.27, "samples": 2008, "free_bytes": 56424288256, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T23:56:14.799845+00:00", "held_seconds": 44282.5, "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": "2026-10-17T12:14:17.345573+00:00", "detail": {"window_hours": 30.0, "row_count": 68, "last_send_at": "2026-10-17T11:00:11.278303+00:00", "age_hours": 1.24, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T23:56:14.800134+00:00", "held_seconds": 44282.5, "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": "2026-10-17T12:14:17.345628+00:00", "detail": {"last_success": "2026-10-17T12:10:01.764318+00:00", "window_hours": 1.0, "age_hours": 0.07, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-16T23:56:14.800295+00:00", "held_seconds": 44282.5, "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": "2026-10-17T12:14:17.479453+00:00", "detail": {"backup_count": 32, "window_hours": 26.0, "newest_at": "2026-10-17T08:00:00+00:00", "newest": "baserow_backup_20261017_030000.tar.gz", "age_hours": 4.24, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T23:56:14.942937+00:00", "held_seconds": 44282.5, "reported_by": "kevin-mac"}, {"surface": "cron:comms-freshness", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "comms-freshness-run.json", "read_at": "2026-10-17T12:14:17.479617+00:00", "detail": {"age_hours": 0.01, "last_success": "2026-10-17T12:13:33.354773+00:00", "window_hours": 1.5, "invoked_by": "scheduler", "alarm": true, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-16T23:56:14.943600+00:00", "held_seconds": 44282.5, "reported_by": "kevin-mac"}, {"surface": "service:staging-queue", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "staging-queue-heartbeat.json", "read_at": "2026-10-17T12:14:17.479675+00:00", "detail": {"http_code": 200, "last_success": "2026-10-17T12:12:22+00:00", "window_hours": 0.5, "age_hours": 0.03, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T23:56:14.943956+00:00", "held_seconds": 44282.5, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 0.2h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-17T12:14:17.479720+00:00", "detail": {"outcome": "posted", "last_success": "2026-10-17T12:00:22.893136+00:00", "window_hours": 26.0, "invoked_by": "cadence", "age_hours": 0.23, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T23:56:14.944850+00:00", "held_seconds": 44282.5, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 7.6h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-17T12:14:17.479766+00:00", "detail": {"last_success": "2026-10-17T04:38:52.264341+00:00", "window_hours": 26.0, "age_hours": 7.59, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-16T23:56:14.945055+00:00", "held_seconds": 44282.5, "reported_by": "kevin-mac"}, {"surface": "cron:digest-hackfw", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": 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"observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "fwdao-index.html.heartbeat.json", "read_at": "2026-10-17T12:14:17.479919+00:00", "detail": {"brand": "fwdao", "last_success": "2026-10-17T12:10:01.876721+00:00", "bytes": 57550, "window_hours": 1.0, "changed": true, "age_hours": 0.07, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T23:56:14.945635+00:00", "held_seconds": 44282.5, "reported_by": "kevin-mac"}, {"surface": "cron:door", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "index.html.heartbeat.json", "read_at": "2026-10-17T12:14:17.479967+00:00", "detail": {"brand": "door", "last_success": "2026-10-17T12:10:02.227240+00:00", "bytes": 12254, "window_hours": 1.0, "changed": false, "age_hours": 0.07, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T23:56:14.945848+00:00", 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