{"surfaces": [{"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 604s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-15T22:29:16.085797+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-15T22:19:12.404037+00:00", "silent_for_seconds": 603.7, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-15T22:29:16.085797+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "54.7GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-15T22:19:12.164220+00:00", "detail": {"free_gb": 54.66, "pct_free": 23.94, "slope_gb_per_day": 0.331, "runway_days": null, "floor_gb": 5.0, "total_gb": 228.27, "samples": 2011, "free_bytes": 58690813952, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T10:00:47.644463+00:00", "held_seconds": 44304.5, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 11.3h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-15T22:19:12.164584+00:00", "detail": {"window_hours": 30.0, "row_count": 66, "last_send_at": "2026-10-15T11:02:30.411105+00:00", "age_hours": 11.28, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T10:00:47.644735+00:00", "held_seconds": 44304.5, "reported_by": "kevin-mac"}, {"surface": "cron:gcal-sync", "observation": "healthy", "method": "reported", "summary": "last success 0.2h ago", "source": "gcal-sync-heartbeat.json", "read_at": "2026-10-15T22:19:12.164653+00:00", "detail": {"last_success": "2026-10-15T22:10:00.937652+00:00", "window_hours": 1.0, "age_hours": 0.15, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-15T10:00:47.644796+00:00", "held_seconds": 44304.5, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 14.3h old (31 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-15T22:19:12.286344+00:00", "detail": {"backup_count": 31, "window_hours": 26.0, "newest_at": "2026-10-15T08:00:00+00:00", "newest": "baserow_backup_20261015_030000.tar.gz", "age_hours": 14.32, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T10:00:47.767415+00:00", "held_seconds": 44304.5, "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": "2026-10-15T22:19:12.286601+00:00", "detail": {"age_hours": 0.1, "last_success": "2026-10-15T22:13:17.038568+00:00", "window_hours": 1.5, "invoked_by": "scheduler", "alarm": true, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-15T10:00:47.767734+00:00", "held_seconds": 44304.5, "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": "2026-10-15T22:19:12.286641+00:00", "detail": {"http_code": 200, "last_success": "2026-10-15T22:16:43+00:00", "window_hours": 0.5, "age_hours": 0.04, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T10:00:47.767945+00:00", "held_seconds": 44304.5, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 5.8h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-15T22:19:12.286812+00:00", "detail": {"outcome": "posted", "last_success": "2026-10-15T16:30:03.026099+00:00", "window_hours": 26.0, "invoked_by": "cadence", "age_hours": 5.82, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T10:00:47.768148+00:00", "held_seconds": 44304.5, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 0.2h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-15T22:19:12.286877+00:00", "detail": {"last_success": "2026-10-15T22:08:45.159187+00:00", "window_hours": 26.0, "age_hours": 0.17, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-15T10:00:47.768345+00:00", "held_seconds": 44304.5, "reported_by": "kevin-mac"}, {"surface": "cron:digest-hackfw", "observation": "healthy", "method": "reported", "summary": "last success 0.2h ago", "source": 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"observation": "healthy", "method": "reported", "summary": "last success 0.2h ago", "source": "fwdao-index.html.heartbeat.json", "read_at": "2026-10-15T22:19:12.287010+00:00", "detail": {"brand": "fwdao", "last_success": "2026-10-15T22:10:01.008259+00:00", "bytes": 56824, "window_hours": 1.0, "changed": false, "age_hours": 0.15, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T10:00:47.768553+00:00", "held_seconds": 44304.5, "reported_by": "kevin-mac"}, {"surface": "cron:door", "observation": "healthy", "method": "reported", "summary": "last success 0.2h ago", "source": "index.html.heartbeat.json", "read_at": "2026-10-15T22:19:12.287048+00:00", "detail": {"brand": "door", "last_success": "2026-10-15T22:10:01.405559+00:00", "bytes": 12254, "window_hours": 1.0, "changed": false, "age_hours": 0.15, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-15T10:00:47.768601+00:00", 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