{"surfaces": [{"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 570s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-14T18:36:03.765310+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-14T18:26:34.002179+00:00", "silent_for_seconds": 569.8, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-14T18:36:03.765310+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "58.0GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-14T18:26:33.733608+00:00", "detail": {"slope_gb_per_day": 0.696, "free_gb": 58.05, "free_bytes": 62327431168, "pct_free": 25.43, "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": "2026-10-14T06:08:03.615855+00:00", "held_seconds": 44310.1, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 7.4h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-14T18:26:33.734135+00:00", "detail": {"age_hours": 7.44, "row_count": 65, "last_send_at": "2026-10-14T11:00:02.301904+00:00", "window_hours": 30.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-14T06:08:03.616350+00:00", "held_seconds": 44310.1, "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": "2026-10-14T18:26:33.734305+00:00", "detail": {"age_hours": 0.11, "last_success": "2026-10-14T18:20:02.924868+00:00", "window_hours": 1.0, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-14T06:08:03.616750+00:00", "held_seconds": 44310.1, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 10.4h old (31 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-14T18:26:33.855589+00:00", "detail": {"age_hours": 10.44, "newest": "baserow_backup_20261014_030001.tar.gz", "backup_count": 31, "newest_at": "2026-10-14T08:00:01+00:00", "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-14T06:08:03.760353+00:00", "held_seconds": 44310.1, "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": "2026-10-14T18:26:33.855849+00:00", "detail": {"age_hours": 0.22, "last_success": "2026-10-14T18:13:05.882826+00:00", "alarm": true, "invoked_by": "scheduler", "window_hours": 1.5, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-14T06:08:03.760828+00:00", "held_seconds": 44310.1, "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": "2026-10-14T18:26:33.855883+00:00", "detail": {"age_hours": 0.01, "last_success": "2026-10-14T18:26:14+00:00", "http_code": 200, "window_hours": 0.5, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-14T06:08:03.760990+00:00", "held_seconds": 44310.1, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 4.4h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-14T18:26:33.856130+00:00", "detail": {"age_hours": 4.42, "last_success": "2026-10-14T14:01:16.246323+00:00", "invoked_by": "distributor", "outcome": "posted", "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-14T06:08:03.761259+00:00", "held_seconds": 44310.1, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 0.3h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-14T18:26:33.856276+00:00", "detail": {"age_hours": 0.3, "last_success": "2026-10-14T18:08:38.634483+00:00", "window_hours": 26.0, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-14T06:08:03.761397+00:00", "held_seconds": 44310.1, "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": "2026-10-14T18:26:33.856426+00:00", "detail": {"brand": "hackfw", "age_hours": 0.11, "last_success": "2026-10-14T18:20:01.157400+00:00", "changed": false, "bytes": 42729, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-14T06:08:03.761697+00:00", "held_seconds": 44310.1, "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": "2026-10-14T18:26:33.856630+00:00", "detail": {"brand": "tmb", "age_hours": 0.11, "last_success": "2026-10-14T18:20:01.375909+00:00", "changed": false, "bytes": 37973, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-14T06:08:03.761879+00:00", "held_seconds": 44310.1, "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": "2026-10-14T18:26:33.856841+00:00", "detail": {"brand": "fwdao", "age_hours": 0.11, "last_success": "2026-10-14T18:20:01.626888+00:00", "changed": false, "bytes": 56788, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-14T06:08:03.762883+00:00", "held_seconds": 44310.1, "reported_by": "kevin-mac"}, {"surface": "cron:door", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "index.html.heartbeat.json", "read_at": "2026-10-14T18:26:33.858203+00:00", "detail": {"brand": "door", "age_hours": 0.11, "last_success": "2026-10-14T18:20:02.031691+00:00", "changed": false, "bytes": 12254, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-14T06:08:03.763087+00:00", 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