{"surfaces": [{"surface": "host:disk/", "observation": "healthy", "method": "local_artifact", "summary": "1001.9GB free, 100710948 days of runway", "source": "statvfs:/", "read_at": "2026-10-11T14:31:11.074927+00:00", "detail": {"free_bytes": 1075811184640, "free_gb": 1001.93, "total_gb": 1001.93, "pct_free": 100.0, "floor_gb": 5.0, "samples": 1016, "slope_gb_per_day": -0.0, "runway_days": 100710947.6}, "held_since": "2026-10-11T14:31:11.074927+00:00", "held_seconds": 0.0}, {"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 614s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-11T14:31:09.790226+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-11T14:20:55.835729+00:00", "silent_for_seconds": 614.0, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-11T14:31:09.790226+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "49.1GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-11T14:20:55.593743+00:00", "detail": {"runway_days": null, "free_bytes": 52709277696, "floor_gb": 5.0, "pct_free": 21.5, "free_gb": 49.09, "samples": 2011, "slope_gb_per_day": 1.121, "total_gb": 228.27, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-11T02:02:41.650821+00:00", "held_seconds": 44293.9, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 3.3h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-11T14:20:55.593817+00:00", "detail": {"row_count": 62, "age_hours": 3.35, "last_send_at": "2026-10-11T11:00:08.254527+00:00", "window_hours": 30.0, "withheld": ["collector_id", "received_at", "reported_method", 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{"http_code": 200, "age_hours": 43.4, "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": "2026-10-11T02:02:41.775869+00:00", "held_seconds": 44293.9, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 0.3h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-11T14:20:55.658875+00:00", "detail": {"invoked_by": "distributor", "age_hours": 0.34, "last_success": "2026-10-11T14:00:16.044472+00:00", "outcome": "posted", "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-11T02:02:41.776218+00:00", "held_seconds": 44293.9, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 9.7h ago", "source": "devpost-heartbeat.json", "read_at": 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