71a64d5a21
Adds an Analytics sub-tab to the Hadoop view with live KPIs and revenue breakdowns (by year/region/category/channel) queried from Trino over iceberg.hadoop.historical_sales, plus a query-engine comparison panel. Trino latency is measured live; Impala and Hive are shown as clearly-labelled representative figures (those engines are not deployed). New cached endpoints /api/hadoop/analytics and /api/hadoop/engines.