Add fast note-creation entry points alongside the existing space-sidebar
actions.
- Home: refactor new-note-button.tsx into a reusable inner CreateNoteButton
(parametrized by `temporary`/label/icon, keeps the 0/1/many writable-space
resolution and space-picker dropdown) and render two equal-width buttons via
`Group grow` — a regular note and a temporary note (IconHourglass).
- Space overview: new SpaceCreateNoteButtons component with two buttons that
create a regular/temporary note directly in the current space and open it,
reusing useTreeMutation.handleCreate (optimistic sidebar-tree insert +
navigation). Permission-gated to members who can manage pages; a local
pending state shows a per-button spinner and disables both to prevent a
double-create. Wired into space-home.tsx above the tabs.
- Reuse existing i18n keys (no new strings): "New note", "New temporary note",
"Create in space".
- Docs: add a CHANGELOG [Unreleased] entry and a "Temporary notes" roadmap
bullet to README.md and README.ru.md.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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