{"surfaces": [{"surface": "host:disk/", "observation": "healthy", "method": "local_artifact", "summary": "755.7GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-09-28T06:30:07.558406+00:00", "detail": {"free_bytes": 811478913024, "free_gb": 755.75, "total_gb": 755.75, "pct_free": 100.0, "floor_gb": 5.0, "samples": 124, "slope_gb_per_day": 0.0, "runway_days": null}, "held_since": "2026-09-28T06:30:07.558406+00:00", "held_seconds": 0.0}, {"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 337s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-09-28T06:30:06.264178+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-09-28T06:24:29.157927+00:00", "silent_for_seconds": 337.1, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-09-28T06:30:06.264178+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "83.2GB free, 162 days of runway", "source": "statvfs:/", "read_at": "2026-09-28T06:24:28.708753+00:00", "detail": {"floor_gb": 5.0, "free_bytes": 89282428928, "pct_free": 36.43, "free_gb": 83.15, "runway_days": 161.6, "slope_gb_per_day": -0.484, "total_gb": 228.27, "samples": 2011, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-09-27T18:10:47.703023+00:00", "held_seconds": 44021.0, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 19.4h ago", "source": "brief-send-log.jsonl", "read_at": "2026-09-28T06:24:28.709025+00:00", "detail": {"row_count": 48, "window_hours": 30.0, "last_send_at": "2026-09-27T11:01:25.939225+00:00", "age_hours": 19.38, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-09-27T18:10:47.703543+00:00", "held_seconds": 44021.0, "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": "2026-09-28T06:24:28.709216+00:00", "detail": {"window_hours": 1.0, "last_success": "2026-09-28T06:20:01.056690+00:00", "age_hours": 0.07, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-09-27T18:10:47.703887+00:00", "held_seconds": 44021.0, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 22.4h old (31 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-09-28T06:24:28.867553+00:00", "detail": {"window_hours": 26.0, "backup_count": 31, "age_hours": 22.41, "newest_at": "2026-09-27T08:00:00+00:00", "newest": "baserow_backup_20260927_030000.tar.gz", "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-09-27T18:10:47.779026+00:00", "held_seconds": 44021.1, "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": "2026-09-28T06:24:28.867950+00:00", "detail": {"window_hours": 1.5, "last_success": "2026-09-28T06:07:11.033336+00:00", "age_hours": 0.29, "invoked_by": "interactive", "alarm": true, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-09-27T18:10:47.779547+00:00", "held_seconds": 44021.1, "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": "2026-09-28T06:24:28.868172+00:00", "detail": {"http_code": 200, "last_success": "2026-09-28T06:22:06+00:00", "age_hours": 0.04, "window_hours": 0.5, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-09-27T18:10:47.779728+00:00", "held_seconds": 44021.1, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 13.9h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-09-28T06:24:28.868423+00:00", "detail": {"window_hours": 26.0, "last_success": "2026-09-27T16:30:07.942609+00:00", "age_hours": 13.91, "outcome": "posted", "invoked_by": "cadence", "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-09-27T18:10:47.780034+00:00", "held_seconds": 44021.1, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 1.8h ago", "source": "devpost-heartbeat.json", "read_at": "2026-09-28T06:24:28.868637+00:00", "detail": {"window_hours": 26.0, "last_success": "2026-09-28T04:37:01.437775+00:00", "age_hours": 1.79, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-09-27T18:10:47.780277+00:00", "held_seconds": 44021.1, "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": "2026-09-28T06:24:28.868870+00:00", "detail": {"window_hours": 1.0, "brand": "hackfw", "age_hours": 0.07, "last_success": "2026-09-28T06:20:00.854001+00:00", "bytes": 42714, "changed": false, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-09-27T18:10:47.780613+00:00", "held_seconds": 44021.1, "reported_by": "kevin-mac"}, {"surface": "cron:digest-tmb", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "tmb-index.html.heartbeat.json", "read_at": "2026-09-28T06:24:28.869044+00:00", "detail": {"window_hours": 1.0, "brand": "tmb", "age_hours": 0.07, "last_success": "2026-09-28T06:20:00.951327+00:00", "bytes": 37973, "changed": false, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-09-27T18:10:47.780766+00:00", "held_seconds": 44021.1, "reported_by": "kevin-mac"}, {"surface": "cron:digest-fwdao", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "fwdao-index.html.heartbeat.json", "read_at": "2026-09-28T06:24:28.869247+00:00", "detail": {"window_hours": 1.0, "brand": "fwdao", "age_hours": 0.07, "last_success": "2026-09-28T06:20:01.088962+00:00", "bytes": 53974, "changed": false, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-09-27T18:10:47.781019+00:00", "held_seconds": 44021.1, "reported_by": "kevin-mac"}, {"surface": "cron:door", "observation": "healthy", "method": "reported", 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