{"surfaces": [{"surface": "host:disk/", "observation": "healthy", "method": "local_artifact", "summary": "1001.9GB free, 525068538 days of runway", "source": "statvfs:/", "read_at": "2026-10-09T08:30:12.560433+00:00", "detail": {"free_bytes": 1075811184640, "free_gb": 1001.93, "total_gb": 1001.93, "pct_free": 100.0, "floor_gb": 5.0, "samples": 517, "slope_gb_per_day": -0.0, "runway_days": 525068538.2}, "held_since": "2026-10-09T08:30:12.560433+00:00", "held_seconds": 0.0}, {"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 535s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-09T08:30:11.321467+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-09T08:21:16.669448+00:00", "silent_for_seconds": 534.7, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-09T08:30:11.321467+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "53.3GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-09T08:21:16.447554+00:00", "detail": {"runway_days": null, "free_bytes": 57179389952, "floor_gb": 5.0, "pct_free": 23.33, "free_gb": 53.25, "samples": 2011, "slope_gb_per_day": 1.341, "total_gb": 228.27, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-08T20:02:47.410337+00:00", "held_seconds": 44309.0, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 21.3h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-09T08:21:16.447806+00:00", "detail": {"row_count": 59, "age_hours": 21.31, "last_send_at": "2026-10-08T11:02:39.292332+00:00", "window_hours": 30.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-08T20:02:47.410718+00:00", "held_seconds": 44309.0, "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": "2026-10-09T08:21:16.447980+00:00", "detail": {"age_hours": 0.02, "last_success": "2026-10-09T08:20:01.400503+00:00", "window_hours": 1.0, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-08T20:02:47.410773+00:00", "held_seconds": 44309.0, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 0.4h old (32 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-09T08:21:16.584899+00:00", "detail": {"age_hours": 0.35, "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": "2026-10-08T20:02:47.541890+00:00", "held_seconds": 44309.0, "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": "2026-10-09T08:21:16.585272+00:00", "detail": {"invoked_by": "interactive", "age_hours": 0.2, "alarm": true, "last_success": "2026-10-09T08:09:01.922806+00:00", "window_hours": 1.5, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-08T20:02:47.542206+00:00", "held_seconds": 44309.0, "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": "2026-10-09T08:21:16.585490+00:00", "detail": {"http_code": 200, "age_hours": 0.08, "last_success": "2026-10-09T08:16:42+00:00", "window_hours": 0.5, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-08T20:02:47.542273+00:00", "held_seconds": 44309.0, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 18.3h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-09T08:21:16.585706+00:00", "detail": {"invoked_by": "distributor", "age_hours": 18.32, "last_success": "2026-10-08T14:02:10.002831+00:00", "outcome": "posted", "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-08T20:02:47.542532+00:00", "held_seconds": 44309.0, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "fault", "method": "reported", "summary": "no successful run in 27.7h (window 26h)", "source": "devpost-heartbeat.json", "read_at": "2026-10-09T08:21:16.585943+00:00", "detail": {"age_hours": 27.72, "last_success": "2026-10-08T04:38:01.847258+00:00", "window_hours": 26.0, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-09T06:50:51.913658+00:00", "held_seconds": 5424.7, "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": "2026-10-09T08:21:16.586160+00:00", "detail": {"age_hours": 0.02, "changed": false, "bytes": 42714, "brand": "hackfw", "last_success": "2026-10-09T08:20:01.250638+00:00", "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-08T20:02:47.542911+00:00", "held_seconds": 44309.0, "reported_by": "kevin-mac"}, {"surface": "cron:digest-tmb", "observation": "healthy", "method": "reported", "summary": "last success 0.0h 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