{"surfaces": [{"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 206s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-13T14:22:00.211987+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-13T14:18:34.617464+00:00", "silent_for_seconds": 205.6, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-13T14:22:00.211987+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "57.6GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-13T14:18:34.393365+00:00", "detail": {"slope_gb_per_day": 0.93, "free_gb": 57.61, "free_bytes": 61858451456, "pct_free": 25.24, "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": "2026-10-13T02:00:33.657008+00:00", "held_seconds": 44280.7, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 3.2h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-13T14:18:34.393629+00:00", "detail": {"age_hours": 3.21, "row_count": 64, "last_send_at": "2026-10-13T11:05:46.442778+00:00", "window_hours": 30.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-13T02:00:33.657346+00:00", "held_seconds": 44280.7, "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": "2026-10-13T14:18:34.393685+00:00", "detail": {"age_hours": 0.14, "last_success": "2026-10-13T14:10:01.000459+00:00", "window_hours": 1.0, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-13T02:00:33.657414+00:00", "held_seconds": 44280.7, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 6.3h old (31 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-13T14:18:34.462618+00:00", "detail": {"age_hours": 6.31, "newest": "baserow_backup_20261013_030001.tar.gz", "backup_count": 31, "newest_at": "2026-10-13T08:00:01+00:00", "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-13T02:00:33.769488+00:00", "held_seconds": 44280.7, "reported_by": "kevin-mac"}, {"surface": "cron:comms-freshness", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "comms-freshness-run.json", "read_at": "2026-10-13T14:18:34.462915+00:00", "detail": {"age_hours": 0.09, "last_success": "2026-10-13T14:12:54.127796+00:00", "alarm": true, "invoked_by": "scheduler", "window_hours": 1.5, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-13T02:00:33.769730+00:00", "held_seconds": 44280.7, "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": "2026-10-13T14:18:34.462971+00:00", "detail": {"age_hours": 0.05, "last_success": "2026-10-13T14:15:46+00:00", "http_code": 200, "window_hours": 0.5, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-13T02:00:33.769866+00:00", "held_seconds": 44280.7, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 0.3h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-13T14:18:34.463019+00:00", "detail": {"age_hours": 0.28, "last_success": "2026-10-13T14:01:47.283233+00:00", "invoked_by": "distributor", "outcome": "posted", "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-13T02:00:33.770108+00:00", "held_seconds": 44280.7, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 9.7h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-13T14:18:34.463063+00:00", "detail": {"age_hours": 9.67, "last_success": "2026-10-13T04:38:30.066333+00:00", "window_hours": 26.0, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-13T02:00:33.770243+00:00", "held_seconds": 44280.7, "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": "2026-10-13T14:18:34.463122+00:00", "detail": {"brand": "hackfw", "age_hours": 0.14, "last_success": "2026-10-13T14:10:00.748271+00:00", "changed": false, "bytes": 42714, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-13T02:00:33.770294+00:00", "held_seconds": 44280.7, "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": "2026-10-13T14:18:34.463167+00:00", "detail": {"brand": "tmb", "age_hours": 0.14, "last_success": "2026-10-13T14:10:00.908578+00:00", "changed": false, "bytes": 37973, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-13T02:00:33.770320+00:00", "held_seconds": 44280.7, "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": "2026-10-13T14:18:34.463208+00:00", "detail": {"brand": "fwdao", "age_hours": 0.14, "last_success": "2026-10-13T14:10:01.085227+00:00", "changed": false, "bytes": 56626, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-13T02:00:33.770346+00:00", "held_seconds": 44280.7, "reported_by": "kevin-mac"}, {"surface": "cron:door", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "index.html.heartbeat.json", "read_at": "2026-10-13T14:18:34.463249+00:00", "detail": {"brand": "door", "age_hours": 0.14, "last_success": "2026-10-13T14:10:01.505873+00:00", "changed": false, "bytes": 12254, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-13T02:00:33.770374+00:00", 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