{"surfaces": [{"surface": "host:disk/", "observation": "healthy", "method": "local_artifact", "summary": "1001.9GB free, 97897412 days of runway", "source": "statvfs:/", "read_at": "2026-10-09T20:37:09.262821+00:00", "detail": {"free_bytes": 1075811184640, "free_gb": 1001.93, "total_gb": 1001.93, "pct_free": 100.0, "floor_gb": 5.0, "samples": 631, "slope_gb_per_day": -0.0, "runway_days": 97897412.5}, "held_since": "2026-10-09T20:37:09.262821+00:00", "held_seconds": 0.0}, {"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 738s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-09T20:37:07.795675+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-09T20:24:49.654354+00:00", "silent_for_seconds": 738.1, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-09T20:37:07.795675+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "52.4GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-09T20:24:49.397543+00:00", "detail": {"runway_days": null, "free_bytes": 56230993920, "floor_gb": 5.0, "pct_free": 22.94, "free_gb": 52.37, "samples": 2011, "slope_gb_per_day": 1.297, "total_gb": 228.27, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T08:06:12.076217+00:00", "held_seconds": 44317.3, "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": "2026-10-09T20:24:49.398049+00:00", "detail": {"row_count": 60, "age_hours": 9.39, "last_send_at": "2026-10-09T11:01:11.351283+00:00", "window_hours": 30.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T08:06:12.076610+00:00", "held_seconds": 44317.3, "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": "2026-10-09T20:24:49.398221+00:00", "detail": {"age_hours": 0.08, "last_success": "2026-10-09T20:20:01.721052+00:00", "window_hours": 1.0, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-09T08:06:12.076888+00:00", "held_seconds": 44317.3, "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": "2026-10-09T20:24:49.533748+00:00", "detail": {"age_hours": 12.41, "newest": "baserow_backup_20261009_030001.tar.gz", "newest_at": "2026-10-09T08:00:01+00:00", "backup_count": 32, "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T08:06:12.211545+00:00", "held_seconds": 44317.3, "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": "2026-10-09T20:24:49.534165+00:00", "detail": {"invoked_by": "interactive", "age_hours": 0.26, "alarm": true, "last_success": "2026-10-09T20:09:07.909896+00:00", "window_hours": 1.5, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-09T08:06:12.211980+00:00", "held_seconds": 44317.3, "reported_by": "kevin-mac"}, {"surface": "service:staging-queue", "observation": "fault", "method": "reported", "summary": "no successful run in 1.5h (window 0.5h)", "source": "staging-queue-heartbeat.json", "read_at": "2026-10-09T20:24:49.534439+00:00", "detail": {"http_code": 200, "age_hours": 1.47, "last_success": "2026-10-09T18:56:53+00:00", "window_hours": 0.5, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T19:39:37.251177+00:00", "held_seconds": 2712.3, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 6.4h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-09T20:24:49.534691+00:00", "detail": {"invoked_by": "distributor", "age_hours": 6.41, "last_success": "2026-10-09T14:00:16.609371+00:00", "outcome": "posted", "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T08:06:12.212499+00:00", "held_seconds": 44317.3, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 0.3h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-09T20:24:49.534850+00:00", "detail": {"age_hours": 0.28, "last_success": "2026-10-09T20:08:10.678908+00:00", "window_hours": 26.0, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-09T17:39:01.005293+00:00", "held_seconds": 9948.5, "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": "2026-10-09T20:24:49.535027+00:00", "detail": {"age_hours": 0.08, "changed": false, "bytes": 42714, "brand": "hackfw", "last_success": "2026-10-09T20:20:01.622852+00:00", "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-09T08:06:12.213090+00:00", "held_seconds": 44317.3, "reported_by": "kevin-mac"}, {"surface": "cron:digest-tmb", "observation": "healthy", "method": "reported", "summary": "last success 0.1h 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