PSU and firmware (BMC/BIOS) boxes were absolutely-positioned SVG rects in a
single fixed-width row with no wrap, so an arbitrary/larger count piled up
and overlapped once a board had more of either than fit in that row. Move
them to plain flex-wrap HTML below the diagram (Firmware row first, then
Power Supplies), which reflows naturally for any count. The main CPU/PCIe/
GPU diagram now scrolls horizontally (overflow-x:auto) instead of being
squashed to fit narrow viewports, matching the wide-table convention used
elsewhere in webui.
Also fixes a crash: renderTopoMainDiagram forced numCols to 1 for layout
purposes when a snapshot has zero CPUs, then unconditionally indexed
hw.CPUs[0], panicking the whole /topo page on any audit without CPU data.
Same-kind/same-column components (e.g. 4 GPUs in one NUMA node) now render
as one stacked card summarizing worst-case status plus a tally line ("3 OK,
1 Warning") instead of one box per component, and card severity coloring
uses real fill/stroke vars instead of HTML badge classes that don't apply
any style to SVG shapes.
Mikhail Chusavitin
1d5c02ebaa