{"surfaces": [{"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 17s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-15T16:32:52.615010+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-15T16:32:36.091764+00:00", "silent_for_seconds": 16.5, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-15T16:32:52.615010+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "54.7GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-15T16:32:35.845722+00:00", "detail": {"free_gb": 54.74, "pct_free": 23.98, "slope_gb_per_day": 0.416, "runway_days": null, "floor_gb": 5.0, "total_gb": 228.27, "samples": 2011, "free_bytes": 58777833472, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T04:14:22.923257+00:00", "held_seconds": 44292.9, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 5.5h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-15T16:32:35.846209+00:00", "detail": {"window_hours": 30.0, "row_count": 66, "last_send_at": "2026-10-15T11:02:30.411105+00:00", "age_hours": 5.5, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T04:14:22.923720+00:00", "held_seconds": 44292.9, "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": "2026-10-15T16:32:35.846263+00:00", "detail": {"last_success": "2026-10-15T16:30:01.961742+00:00", "window_hours": 1.0, "age_hours": 0.04, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-15T04:14:22.923866+00:00", "held_seconds": 44292.9, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 8.5h old (31 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-15T16:32:35.986771+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": 8.54, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T04:14:23.066333+00:00", "held_seconds": 44292.9, "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": "2026-10-15T16:32:35.987091+00:00", "detail": {"age_hours": 0.32, "last_success": "2026-10-15T16:13:14.819135+00:00", "window_hours": 1.5, "invoked_by": "scheduler", "alarm": true, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-15T04:14:23.066708+00:00", "held_seconds": 44292.9, "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": "2026-10-15T16:32:35.987148+00:00", "detail": {"http_code": 200, "last_success": "2026-10-15T16:31:37+00:00", "window_hours": 0.5, "age_hours": 0.02, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T04:14:23.066886+00:00", "held_seconds": 44292.9, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-15T16:32:35.987199+00:00", "detail": {"outcome": "posted", "last_success": "2026-10-15T16:30:03.026099+00:00", "window_hours": 26.0, "invoked_by": "cadence", "age_hours": 0.04, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T04:14:23.067079+00:00", "held_seconds": 44292.9, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 11.9h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-15T16:32:35.987498+00:00", "detail": {"last_success": "2026-10-15T04:38:41.051613+00:00", "window_hours": 26.0, "age_hours": 11.9, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-15T04:14:23.067247+00:00", "held_seconds": 44292.9, "reported_by": "kevin-mac"}, {"surface": "cron:digest-hackfw", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", 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"observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "fwdao-index.html.heartbeat.json", "read_at": "2026-10-15T16:32:35.987656+00:00", "detail": {"brand": "fwdao", "last_success": "2026-10-15T16:30:02.001674+00:00", "bytes": 56824, "window_hours": 1.0, "changed": false, "age_hours": 0.04, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T04:14:23.068431+00:00", "held_seconds": 44292.9, "reported_by": "kevin-mac"}, {"surface": "cron:door", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "index.html.heartbeat.json", "read_at": "2026-10-15T16:32:35.987703+00:00", "detail": {"brand": "door", "last_success": "2026-10-15T16:30:02.414463+00:00", "bytes": 12254, "window_hours": 1.0, "changed": false, "age_hours": 0.04, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T04:14:23.068680+00:00", 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