{"surfaces": [{"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 275s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-10-12T22:34:14.342840+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-10-12T22:29:39.068485+00:00", "silent_for_seconds": 275.3, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-10-12T22:34:14.342840+00:00", "held_seconds": 0.0}, {"surface": "host:mac/disk", "observation": "healthy", "method": "reported", "summary": "59.0GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-10-12T22:29:38.780515+00:00", "detail": {"slope_gb_per_day": 1.026, "free_gb": 59.03, "free_bytes": 63378096128, "pct_free": 25.86, "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": "2026-10-12T10:11:13.431357+00:00", "held_seconds": 44305.3, "reported_by": "kevin-mac"}, {"surface": "cron:morning-brief", "observation": "healthy", "method": "reported", "summary": "brief sent 11.4h ago", "source": "brief-send-log.jsonl", "read_at": "2026-10-12T22:29:38.780764+00:00", "detail": {"age_hours": 11.44, "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": "2026-10-12T10:11:13.431638+00:00", "held_seconds": 44305.3, "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": "2026-10-12T22:29:38.780914+00:00", "detail": {"age_hours": 0.16, "last_success": "2026-10-12T22:20:01.336200+00:00", "window_hours": 1.0, "withheld": ["collector_id", "counts", "received_at", "reported_method", "skipped", "wire_row_id"]}, "held_since": "2026-10-12T10:11:13.431688+00:00", "held_seconds": 44305.3, "reported_by": "kevin-mac"}, {"surface": "backup:baserow", "observation": "healthy", "method": "reported", "summary": "backup 14.5h old (31 retained)", "source": "infra-baserow-1:/baserow/backups", "read_at": "2026-10-12T22:29:38.911483+00:00", "detail": {"age_hours": 14.49, "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": "2026-10-12T10:11:13.565129+00:00", "held_seconds": 44305.3, "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": "2026-10-12T22:29:38.912107+00:00", "detail": {"age_hours": 0.28, "last_success": "2026-10-12T22:12:47.774617+00:00", "alarm": true, "invoked_by": "scheduler", "window_hours": 1.5, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-10-12T10:11:13.565420+00:00", "held_seconds": 44305.3, "reported_by": "kevin-mac"}, {"surface": "service:staging-queue", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": "staging-queue-heartbeat.json", "read_at": "2026-10-12T22:29:38.912366+00:00", "detail": {"age_hours": 0.07, "last_success": "2026-10-12T22:25:30+00:00", "http_code": 200, "window_hours": 0.5, "withheld": ["collector_id", "probe", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-12T10:11:13.565498+00:00", "held_seconds": 44305.3, "reported_by": "kevin-mac"}, {"surface": "cron:kai-cadence", "observation": "healthy", "method": "reported", "summary": "last success 8.4h ago", "source": "kai-cadence-heartbeat.json", "read_at": "2026-10-12T22:29:38.912576+00:00", "detail": {"age_hours": 8.44, "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": "2026-10-12T10:11:13.565649+00:00", "held_seconds": 44305.3, "reported_by": "kevin-mac"}, {"surface": "cron:devpost", "observation": "healthy", "method": "reported", "summary": "last success 0.4h ago", "source": "devpost-heartbeat.json", "read_at": "2026-10-12T22:29:38.912906+00:00", "detail": {"age_hours": 0.35, "last_success": "2026-10-12T22:08:28.528969+00:00", "window_hours": 26.0, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-10-12T10:11:13.565817+00:00", "held_seconds": 44305.3, "reported_by": "kevin-mac"}, {"surface": "cron:digest-hackfw", "observation": "healthy", "method": "reported", "summary": "last success 0.2h ago", "source": "index.html.heartbeat.json", "read_at": "2026-10-12T22:29:38.913229+00:00", "detail": {"brand": "hackfw", "age_hours": 0.16, "last_success": "2026-10-12T22:20:00.946681+00:00", "changed": false, "bytes": 42714, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-12T10:11:13.565875+00:00", "held_seconds": 44305.3, "reported_by": "kevin-mac"}, {"surface": "cron:digest-tmb", "observation": "healthy", "method": "reported", "summary": "last success 0.2h ago", "source": "tmb-index.html.heartbeat.json", "read_at": "2026-10-12T22:29:38.913440+00:00", "detail": {"brand": "tmb", "age_hours": 0.16, "last_success": "2026-10-12T22:20:01.130257+00:00", "changed": false, "bytes": 37973, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-12T10:11:13.565914+00:00", "held_seconds": 44305.3, "reported_by": "kevin-mac"}, {"surface": "cron:digest-fwdao", "observation": "healthy", "method": "reported", "summary": "last success 0.2h ago", "source": "fwdao-index.html.heartbeat.json", "read_at": "2026-10-12T22:29:38.913698+00:00", "detail": {"brand": "fwdao", "age_hours": 0.16, "last_success": "2026-10-12T22:20:01.314286+00:00", "changed": false, "bytes": 56626, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-12T10:11:13.565949+00:00", "held_seconds": 44305.3, "reported_by": "kevin-mac"}, {"surface": "cron:door", "observation": "healthy", "method": "reported", "summary": "last success 0.2h ago", "source": "index.html.heartbeat.json", "read_at": "2026-10-12T22:29:38.913981+00:00", "detail": {"brand": "door", "age_hours": 0.16, "last_success": "2026-10-12T22:20:01.734784+00:00", "changed": false, "bytes": 12254, "window_hours": 1.0, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-10-12T10:11:13.565991+00:00", 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