{"surfaces": [{"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 175s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-16T22:13:40.083809+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-16T22:10:45.348073+00:00", "silent_for_seconds": 174.7, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-16T22:13:40.083809+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "52.4GB free, 353 days of runway", "source": "statvfs:/", "read_at": "2026-10-16T22:10:45.033448+00:00", "detail": {"free_gb": 52.4, "pct_free": 22.95, "slope_gb_per_day": -0.134, "runway_days": 353.3, "floor_gb": 5.0, "total_gb": 228.27, "samples": 2008, "free_bytes": 56261541888, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T09:52:15.275633+00:00", "held_seconds": 44309.8, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 11.1h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-16T22:10:45.033870+00:00", "detail": {"window_hours": 30.0, "row_count": 67, "last_send_at": "2026-10-16T11:03:23.243564+00:00", "age_hours": 11.12, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T09:52:15.275968+00:00", "held_seconds": 44309.8, "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": "2026-10-16T22:10:45.033921+00:00", "detail": {"last_success": "2026-10-16T22:10:00.828615+00:00", "window_hours": 1.0, "age_hours": 0.01, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-16T09:52:15.276182+00:00", "held_seconds": 44309.8, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 14.2h old (32 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-16T22:10:45.164760+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": 14.18, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T09:52:15.423618+00:00", "held_seconds": 44309.7, "reported_by": "kevin-mac"}, {"surface": "cron:comms-freshness", "observation": "healthy", "method": "reported", "summary": "last success 0.5h ago", "source": "comms-freshness-run.json", "read_at": "2026-10-16T22:10:45.165218+00:00", "detail": {"age_hours": 0.46, "last_success": "2026-10-16T21:43:26.702911+00:00", "window_hours": 1.5, "invoked_by": "scheduler", "alarm": true, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-16T09:52:15.423939+00:00", "held_seconds": 44309.7, "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": "2026-10-16T22:10:45.165284+00:00", "detail": {"http_code": 200, "last_success": "2026-10-16T22:07:07+00:00", "window_hours": 0.5, "age_hours": 0.06, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T09:52:15.424026+00:00", "held_seconds": 44309.7, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 5.7h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-16T22:10:45.165493+00:00", "detail": {"outcome": "posted", "last_success": "2026-10-16T16:30:02.507519+00:00", "window_hours": 26.0, "invoked_by": "cadence", "age_hours": 5.68, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T09:52:15.424210+00:00", "held_seconds": 44309.7, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-16T22:10:45.165548+00:00", "detail": {"last_success": "2026-10-16T22:08:50.762580+00:00", "window_hours": 26.0, "age_hours": 0.03, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-16T09:52:15.424368+00:00", "held_seconds": 44309.7, "reported_by": "kevin-mac"}, {"surface": "cron:digest-hackfw", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": 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"observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "fwdao-index.html.heartbeat.json", "read_at": "2026-10-16T22:10:45.165703+00:00", "detail": {"brand": "fwdao", "last_success": "2026-10-16T22:10:00.971901+00:00", "bytes": 57574, "window_hours": 1.0, "changed": false, "age_hours": 0.01, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T09:52:15.424884+00:00", "held_seconds": 44309.7, "reported_by": "kevin-mac"}, {"surface": "cron:door", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "index.html.heartbeat.json", "read_at": "2026-10-16T22:10:45.165748+00:00", "detail": {"brand": "door", "last_success": "2026-10-16T22:10:01.393746+00:00", "bytes": 12254, "window_hours": 1.0, "changed": false, "age_hours": 0.01, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-16T09:52:15.425742+00:00", 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