- Extract buildSubtree/mapSharedNodes/countNodes/SubpageNode into
subpages-view.utils.ts with a unit test (subpages-view.utils.test.ts)
covering nesting, position order, missing/unreachable parent, self-parent
guard, empty input, countNodes and mapSharedNodes remap.
- Replace the manual useState + editor.on("transaction") subscription in
subpages-menu.tsx with useEditorState (the idiom the sibling bubble menus
use), so the mode icon/tooltip track the live recursive attribute without
re-rendering on every keystroke.
- i18n: add the 6 menu/tree strings and a pluralized
"Showing {{count}} subpages" key to en-US and ru-RU.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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