Three bugs surfaced in browser testing, plus one UX request:
1. The Uploads panel and the binary-mode editor sub-panels stayed
visible after `el.hidden = true` because their `display: flex/grid`
rules in components.css have the same specificity as the UA's
`[hidden]{display:none}` and come later in cascade. Add a targeted
`[hidden]!important` rule for the affected classes.
2. Clicking a folder toggle inside a `files` overlay did nothing.
`file-tree.js` looked for `.file-tree-children` via
`button.nextElementSibling`, but the files-overlay row template
inserts a per-row action span between the toggle and the children
div. Switch to `closest('.file-tree-row').querySelector(':scope >
.file-tree-children')` so both row variants resolve correctly.
3. Pressing Enter on the new-folder dialog did nothing — the keydown
handler was attached with `{once:true}` inside `openNewFolder`,
so the first letter the user typed consumed the listener and Enter
never fired. Move the listener to module init so it survives
subsequent keystrokes and dialog reopenings.
UX: render the overlay root as a row inside the tree (label
"(overlay root)") rather than as a separate toolbar. The root row
carries the same `+ new file · + new folder · ⬇ zip` hover-action
column as every other folder row, so drop-on-row, hover-reveal, and
data-target-path semantics are uniform across the tree.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>