Jobs is not built yet
It is designed in doc/ui.md §4.6 and tracked as item 43 in subscribe/task.md. The API answers 501 E_NOT_BUILT for it rather than returning an empty result, so nothing here pretends to have data.
Jobs are backfills, and backfills need the archive plane. The screen is designed as a grid with one cell per archive file, coloured by state and arranged by time — a progress bar that also tells you which part of history is still missing, which a percentage never does.