{"surfaces": [{"surface": "host:disk/", "observation": "healthy", "method": "local_artifact", "summary": "755.7GB free, not shrinking", "source": "statvfs:/", "read_at": "2026-09-27T20:29:33.177653+00:00", "detail": {"free_bytes": 811478913024, "free_gb": 755.75, "total_gb": 755.75, "pct_free": 100.0, "floor_gb": 5.0, "samples": 33, "slope_gb_per_day": 0.0, "runway_days": null}, "held_since": "2026-09-27T20:29:33.177653+00:00", "held_seconds": 0.0}, {"surface": "collector:kevin-mac", "observation": "healthy", "method": "local_artifact", "summary": "collector kevin-mac last reported 189s ago, inside its declared 1800s deadline", "source": "verify:collector_liveness", "read_at": "2026-09-27T20:29:31.816721+00:00", "detail": {"liveness": "live", "cadence_seconds": 900.0, "silent_after_seconds": 1800.0, "last_report_at": "2026-09-27T20:26:23.095011+00:00", "silent_for_seconds": 188.7, "withheld": ["collector_id", "declared_surfaces"]}, "held_since": "2026-09-27T20:29:31.816721+00:00", 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["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-09-27T08:08:12.229804+00:00", "held_seconds": 44290.5, "reported_by": "kevin-mac"}, {"surface": "cron:comms-freshness", "observation": "healthy", "method": "reported", "summary": "last success 0.5h ago", "source": "comms-freshness-run.json", "read_at": "2026-09-27T20:26:22.701278+00:00", "detail": {"window_hours": 1.5, "last_success": "2026-09-27T19:58:29.141430+00:00", "age_hours": 0.46, "invoked_by": "interactive", "alarm": false, "withheld": ["collector_id", "received_at", "reported_method", "stale", "wire_row_id"]}, "held_since": "2026-09-27T08:08:12.230394+00:00", "held_seconds": 44290.5, "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": "2026-09-27T20:26:22.701569+00:00", "detail": {"http_code": 200, "last_success": 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"detail": {"window_hours": 26.0, "last_success": "2026-09-27T20:03:34.752816+00:00", "age_hours": 0.38, "withheld": ["collector_id", "hb_source", "received_at", "reported_method", "row", "wire_row_id"]}, "held_since": "2026-09-27T08:08:12.231636+00:00", "held_seconds": 44290.5, "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": "2026-09-27T20:26:22.724099+00:00", "detail": {"window_hours": 1.0, "brand": "hackfw", "age_hours": 0.11, "last_success": "2026-09-27T20:20:01.260604+00:00", "bytes": 42714, "changed": false, "withheld": ["collector_id", "received_at", "reported_method", "wire_row_id"]}, "held_since": "2026-09-27T08:08:12.232064+00:00", "held_seconds": 44290.5, "reported_by": "kevin-mac"}, {"surface": "cron:digest-tmb", "observation": "healthy", "method": "reported", "summary": "last success 0.1h ago", "source": 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