{"surfaces": [{"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 163s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-13T20:23:06.094674+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-13T20:20:22.638013+00:00", "silent_for_seconds": 163.5, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-13T20:23:06.094674+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "57.4GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-13T20:20:22.414217+00:00", "detail": {"slope_gb_per_day": 0.888, "free_gb": 57.35, "free_bytes": 61581189120, "pct_free": 25.12, "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": "2026-10-13T08:01:54.644700+00:00", "held_seconds": 44307.8, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 9.2h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-13T20:20:22.414776+00:00", "detail": {"age_hours": 9.24, "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": "2026-10-13T08:01:54.645185+00:00", "held_seconds": 44307.8, "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": "2026-10-13T20:20:22.414947+00:00", "detail": {"age_hours": 0.01, "last_success": "2026-10-13T20:20:01.030480+00:00", "window_hours": 1.0, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-13T08:01:54.645364+00:00", "held_seconds": 44307.8, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 12.3h old (31 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-13T20:20:22.552897+00:00", "detail": {"age_hours": 12.34, "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": "2026-10-13T08:01:54.717598+00:00", "held_seconds": 44307.8, "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": "2026-10-13T20:20:22.553210+00:00", "detail": {"age_hours": 0.12, "last_success": "2026-10-13T20:12:56.402064+00:00", "alarm": true, "invoked_by": "scheduler", "window_hours": 1.5, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-13T08:01:54.717918+00:00", "held_seconds": 44307.8, "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": "2026-10-13T20:20:22.553407+00:00", "detail": {"age_hours": 0.08, "last_success": "2026-10-13T20:15:52+00:00", "http_code": 200, "window_hours": 0.5, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-13T08:01:54.717980+00:00", "held_seconds": 44307.8, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 6.3h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-13T20:20:22.553602+00:00", "detail": {"age_hours": 6.31, "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": "2026-10-13T08:01:54.718305+00:00", "held_seconds": 44307.8, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 0.2h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-13T20:20:22.553781+00:00", "detail": {"age_hours": 0.2, "last_success": "2026-10-13T20:08:33.504880+00:00", "window_hours": 26.0, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-13T08:01:54.718602+00:00", "held_seconds": 44307.8, "reported_by": "kevin-mac"}, {"surface": "cron:digest-hackfw", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "index.html.heartbeat.json", "read_at": "2026-10-13T20:20:22.553956+00:00", "detail": {"brand": "hackfw", "age_hours": 0.01, "last_success": "2026-10-13T20:20:00.688278+00:00", "changed": false, "bytes": 42714, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-13T08:01:54.718790+00:00", "held_seconds": 44307.8, "reported_by": "kevin-mac"}, {"surface": "cron:digest-tmb", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "tmb-index.html.heartbeat.json", "read_at": "2026-10-13T20:20:22.554112+00:00", "detail": {"brand": "tmb", "age_hours": 0.01, "last_success": "2026-10-13T20:20:00.831740+00:00", "changed": false, "bytes": 37973, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-13T08:01:54.718917+00:00", "held_seconds": 44307.8, "reported_by": "kevin-mac"}, {"surface": "cron:digest-fwdao", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "fwdao-index.html.heartbeat.json", "read_at": "2026-10-13T20:20:22.554260+00:00", "detail": {"brand": "fwdao", "age_hours": 0.01, "last_success": "2026-10-13T20:20:00.982284+00:00", "changed": false, "bytes": 56584, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-13T08:01:54.719085+00:00", "held_seconds": 44307.8, "reported_by": "kevin-mac"}, {"surface": "cron:door", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "index.html.heartbeat.json", "read_at": "2026-10-13T20:20:22.554414+00:00", "detail": {"brand": "door", "age_hours": 0.01, "last_success": "2026-10-13T20:20:01.303851+00:00", "changed": false, "bytes": 12254, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-13T08:01:54.719261+00:00", 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