{"surfaces": [{"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 146s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-16T20:27:43.893023+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-16T20:25:18.178199+00:00", "silent_for_seconds": 145.7, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-16T20:27:43.893023+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "52.4GB free, 500 days of runway", "source": "statvfs:/", "read_at": "2026-10-16T20:25:17.849360+00:00", "detail": {"free_gb": 52.43, "pct_free": 22.97, "slope_gb_per_day": -0.095, "runway_days": 499.5, "floor_gb": 5.0, "total_gb": 228.27, "samples": 2008, "free_bytes": 56295845888, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T08:06:46.219555+00:00", "held_seconds": 44311.6, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 9.4h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-16T20:25:17.849817+00:00", "detail": {"window_hours": 30.0, "row_count": 67, "last_send_at": "2026-10-16T11:03:23.243564+00:00", "age_hours": 9.37, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T08:06:46.219928+00:00", "held_seconds": 44311.6, "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": "2026-10-16T20:25:17.850002+00:00", "detail": {"last_success": "2026-10-16T20:20:00.931214+00:00", "window_hours": 1.0, "age_hours": 0.09, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-16T08:06:46.220328+00:00", "held_seconds": 44311.6, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 12.4h old (32 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-16T20:25:17.976550+00:00", "detail": {"backup_count": 32, "window_hours": 26.0, "newest_at": "2026-10-16T08:00:00+00:00", "newest": "baserow_backup_20261016_030000.tar.gz", "age_hours": 12.42, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T08:06:46.358464+00:00", "held_seconds": 44311.6, "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": "2026-10-16T20:25:17.977009+00:00", "detail": {"age_hours": 0.2, "last_success": "2026-10-16T20:13:25.993538+00:00", "window_hours": 1.5, "invoked_by": "scheduler", "alarm": true, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-16T08:06:46.358919+00:00", "held_seconds": 44311.6, "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": "2026-10-16T20:25:17.977200+00:00", "detail": {"http_code": 200, "last_success": "2026-10-16T20:22:06+00:00", "window_hours": 0.5, "age_hours": 0.05, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T08:06:46.359138+00:00", "held_seconds": 44311.6, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 3.9h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-16T20:25:17.977493+00:00", "detail": {"outcome": "posted", "last_success": "2026-10-16T16:30:02.507519+00:00", "window_hours": 26.0, "invoked_by": "cadence", "age_hours": 3.92, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T08:06:46.359470+00:00", "held_seconds": 44311.6, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 0.3h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-16T20:25:17.977663+00:00", "detail": {"last_success": "2026-10-16T20:08:50.276798+00:00", "window_hours": 26.0, "age_hours": 0.27, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-16T08:06:46.359775+00:00", "held_seconds": 44311.6, "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": "2026-10-16T20:25:17.977841+00:00", "detail": {"brand": "hackfw", "last_success": "2026-10-16T20:20:00.859768+00:00", "bytes": 42714, "window_hours": 1.0, "changed": false, "age_hours": 0.09, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T08:06:46.360093+00:00", "held_seconds": 44311.6, "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": "2026-10-16T20:25:17.978010+00:00", "detail": {"brand": "tmb", "last_success": "2026-10-16T20:20:00.992272+00:00", "bytes": 37973, "window_hours": 1.0, "changed": false, "age_hours": 0.09, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T08:06:46.360312+00:00", "held_seconds": 44311.6, "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": "2026-10-16T20:25:17.978230+00:00", "detail": {"brand": "fwdao", "last_success": "2026-10-16T20:20:01.182078+00:00", "bytes": 57574, "window_hours": 1.0, "changed": false, "age_hours": 0.09, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T08:06:46.360997+00:00", "held_seconds": 44311.6, "reported_by": "kevin-mac"}, {"surface": "cron:door", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "index.html.heartbeat.json", "read_at": "2026-10-16T20:25:17.979475+00:00", "detail": {"brand": "door", "last_success": "2026-10-16T20:20:01.608551+00:00", "bytes": 12254, "window_hours": 1.0, "changed": false, "age_hours": 0.09, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T08:06:46.361264+00:00", 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