{"surfaces": [{"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 511s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-13T06:25:01.889012+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-13T06:16:30.714465+00:00", "silent_for_seconds": 511.2, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-13T06:25:01.889012+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "57.5GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-13T06:16:30.475007+00:00", "detail": {"slope_gb_per_day": 0.982, "free_gb": 57.52, "free_bytes": 61765570560, "pct_free": 25.2, "samples": 2011, "floor_gb": 5.0, "runway_days": null, "total_gb": 228.27, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-12T17:58:23.555079+00:00", "held_seconds": 44286.9, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 19.2h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-13T06:16:30.475483+00:00", "detail": {"age_hours": 19.22, "row_count": 63, "last_send_at": "2026-10-12T11:03:23.591696+00:00", "window_hours": 30.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-12T17:58:23.555555+00:00", "held_seconds": 44286.9, "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": "2026-10-13T06:16:30.475538+00:00", "detail": {"age_hours": 0.11, "last_success": "2026-10-13T06:10:01.155136+00:00", "window_hours": 1.0, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-12T17:58:23.555839+00:00", "held_seconds": 44286.9, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 22.3h old (31 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-13T06:16:30.547171+00:00", "detail": {"age_hours": 22.28, "newest": "baserow_backup_20261012_030000.tar.gz", "backup_count": 31, "newest_at": "2026-10-12T08:00:00+00:00", "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-12T17:58:23.689252+00:00", "held_seconds": 44286.9, "reported_by": "kevin-mac"}, {"surface": "cron:comms-freshness", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "comms-freshness-run.json", "read_at": "2026-10-13T06:16:30.547474+00:00", "detail": {"age_hours": 0.06, "last_success": "2026-10-13T06:12:50.496316+00:00", "alarm": true, "invoked_by": "scheduler", "window_hours": 1.5, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-12T17:58:23.689671+00:00", "held_seconds": 44286.9, "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": "2026-10-13T06:16:30.547525+00:00", "detail": {"age_hours": 0.01, "last_success": "2026-10-13T06:15:38+00:00", "http_code": 200, "window_hours": 0.5, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-12T17:58:23.689726+00:00", "held_seconds": 44286.9, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 16.2h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-13T06:16:30.547715+00:00", "detail": {"age_hours": 16.22, "last_success": "2026-10-12T14:03:04.087541+00:00", "invoked_by": "distributor", "outcome": "posted", "window_hours": 26.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-12T17:58:23.690015+00:00", "held_seconds": 44286.9, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 1.6h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-13T06:16:30.547887+00:00", "detail": {"age_hours": 1.63, "last_success": "2026-10-13T04:38:30.066333+00:00", "window_hours": 26.0, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-12T17:58:23.690189+00:00", "held_seconds": 44286.9, "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": "2026-10-13T06:16:30.547945+00:00", "detail": {"brand": "hackfw", "age_hours": 0.11, "last_success": "2026-10-13T06:10:00.947221+00:00", "changed": false, "bytes": 42714, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-12T17:58:23.690475+00:00", "held_seconds": 44286.9, "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": "2026-10-13T06:16:30.547986+00:00", "detail": {"brand": "tmb", "age_hours": 0.11, "last_success": "2026-10-13T06:10:01.201399+00:00", "changed": false, "bytes": 37973, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-12T17:58:23.690716+00:00", "held_seconds": 44286.9, "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": "2026-10-13T06:16:30.548025+00:00", "detail": {"brand": "fwdao", "age_hours": 0.11, "last_success": "2026-10-13T06:10:01.351378+00:00", "changed": false, "bytes": 56626, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-12T17:58:23.691431+00:00", "held_seconds": 44286.9, "reported_by": "kevin-mac"}, {"surface": "cron:door", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "index.html.heartbeat.json", "read_at": "2026-10-13T06:16:30.548066+00:00", "detail": {"brand": "door", "age_hours": 0.11, "last_success": "2026-10-13T06:10:01.664707+00:00", "changed": false, "bytes": 12254, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-12T17:58:23.691555+00:00", 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