COLLAPSE ALL folded the top-level row as well, and that row is already its own
fold: one click on its name shuts it and takes the whole subtree with it. Folding
it from the menu hid every row of the tree — the item repeated a click the reader
already had, while the one thing a click there cannot reach, the folders nested
below, was the part that got lost with it.
So the item folds the folders nested below the top level: every row with a
subfolder under it that is not itself a folder picked at the top level. The
top-level row stays drawn and stays open, its own subfolders are drawn folded,
and no top-level row ever leaves the column. `nested` is computed off `parents`
once, and the item is disabled on a folder with nothing nested under it.
Verified:
library-check.mjs — 35 steps, all passed. The fold step now reads the rows the
click leaves behind instead of a row count: the fully open roll (4 rows)
becomes exactly CheckRoll aria-expanded=true, CheckRoll/2026
aria-expanded=false, CheckRoll/Empty (a leaf, so no aria-expanded) —
CheckRoll/2026/04 is away, the top-level row is not — with the strip's 2
tiles unmoved and the row menu still leading with lib-menu-collapse.
frontend tsc --noEmit clean. Live 8090 on index-DAIpyDNV.js matching dist/:
/, /library and /app 200 with 0 console errors.
ponytail: with several folders picked, one COLLAPSE ALL folds the nested rows of
all of them, not only the row that was clicked — no top-level row is hidden
either way; scope it to the clicked folder's prefix when a column routinely
holds many picked folders.
3dtours
5e28b42067