{"surfaces": [{"surface": "host:disk/", "observation": "healthy", "method": "local_artifact", "summary": "1001.9GB free, 250922676 days of runway", "source": "statvfs:/", "read_at": "2026-10-09T10:26:28.218375+00:00", "detail": {"free_bytes": 1075811184640, "free_gb": 1001.93, "total_gb": 1001.93, "pct_free": 100.0, "floor_gb": 5.0, "samples": 534, "slope_gb_per_day": -0.0, "runway_days": 250922675.9}, "held_since": "2026-10-09T10:26:28.218375+00:00", "held_seconds": 0.0}, {"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 276s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-09T10:26:26.441875+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-09T10:21:50.336850+00:00", "silent_for_seconds": 276.1, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-09T10:26:26.441875+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "53.0GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-09T10:21:50.036066+00:00", "detail": {"runway_days": null, "free_bytes": 56941989888, "floor_gb": 5.0, "pct_free": 23.23, "free_gb": 53.03, "samples": 2011, "slope_gb_per_day": 1.335, "total_gb": 228.27, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-08T22:03:21.978388+00:00", "held_seconds": 44308.1, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 23.3h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-09T10:21:50.036331+00:00", "detail": {"row_count": 59, "age_hours": 23.32, "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": "2026-10-08T22:03:21.978874+00:00", "held_seconds": 44308.1, "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": "2026-10-09T10:21:50.036387+00:00", "detail": {"age_hours": 0.03, "last_success": "2026-10-09T10:20:01.094929+00:00", "window_hours": 1.0, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-08T22:03:21.978922+00:00", "held_seconds": 44308.1, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 2.4h old (32 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-09T10:21:50.172481+00:00", "detail": {"age_hours": 2.36, "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": "2026-10-08T22:03:22.128641+00:00", "held_seconds": 44308.0, "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": "2026-10-09T10:21:50.172830+00:00", "detail": {"invoked_by": "interactive", "age_hours": 0.21, "alarm": true, "last_success": "2026-10-09T10:09:02.763559+00:00", "window_hours": 1.5, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-08T22:03:22.128989+00:00", "held_seconds": 44308.0, "reported_by": "kevin-mac"}, {"surface": "service:staging-queue", "observation": "healthy", "method": "reported", "summary": "last success 0.0h ago", "source": "staging-queue-heartbeat.json", "read_at": "2026-10-09T10:21:50.172892+00:00", "detail": {"http_code": 200, "age_hours": 0.0, "last_success": "2026-10-09T10:21:44+00:00", "window_hours": 0.5, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-08T22:03:22.129050+00:00", "held_seconds": 44308.0, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 20.3h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-09T10:21:50.173118+00:00", "detail": {"invoked_by": "distributor", "age_hours": 20.33, "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": "2026-10-08T22:03:22.129388+00:00", "held_seconds": 44308.0, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "fault", "method": "reported", "summary": "no successful run in 29.7h (window 26h)", "source": "devpost-heartbeat.json", "read_at": "2026-10-09T10:21:50.173345+00:00", "detail": {"age_hours": 29.73, "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": 12658.3, "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": "2026-10-09T10:21:50.173423+00:00", "detail": {"age_hours": 0.03, "changed": false, "bytes": 42714, "brand": "hackfw", "last_success": "2026-10-09T10:20:00.905874+00:00", "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-08T22:03:22.129877+00:00", "held_seconds": 44308.0, "reported_by": "kevin-mac"}, {"surface": "cron:digest-tmb", "observation": "healthy", "method": "reported", "summary": "last success 0.0h 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