Milestone-fieldtest finding B1: TraceStore::name_kind/read_family
resolve taps exactly one directory below the handle, so the depth-2
per-member layout sweep/walkforward --trace writes (#224,
<name>/<cell>/<member>/index.json) classifies as NotFound and
`aura chart <handle>` exits 1 — with a remedy string that suggests
re-running the very command that produced the data. The new autonomous
test fabricates the depth-2 family via TraceStore and pins: chart on
the printed family handle exits 0 and emits the HTML.
refs milestone fieldtest 09da04f
Brummel
abb6fbaa87