Datasource Availability Awareness across Monitoring — the Monitoring Cockpit now performs a fast pre-check on the selected datasource and skips long-running queries when it is unreachable, surfacing an amber "Refresh availability" banner with a Configure Datasource link instead of hanging; the Datasource picker sorts unreachable entries to the bottom with an "(unreachable)" label and tooltip, the Datasources page shows an "Unreachable" indicator next to broken entries, and a Refresh availability button is available in the page header
Per-Browser Persistence of the Monitoring Cockpit Dashboard State — datasource, time-range preset, custom from/to, profile selection, included measurements and the active tab are remembered between visits in the browser and validated against current data on load (deleted datasources, stale measurements and absolute custom ranges are dropped automatically)
Page Header on the Monitoring Cockpit — the page now opens with a clear "End-to-End Monitoring Dashboard" title and subtitle above the filter toolbar, matching the Uptime and Insight dashboards