- Right sidebar stays open by default and shows an empty state when
nothing is selected, instead of auto-hiding on deselect.
- Both sidebars now have a collapse button in their header and an
expand button in the TopBar that only appears when collapsed, so
each panel has a discoverable affordance in either state.
- Arrow-key navigation auto-scrolls the destination row into view
with a ~35% peek margin, cueing the user that there's more content
in the scroll direction.
- Fix: the width sentinel's measurement effect never installed its
ResizeObserver when Timeline first rendered the loading state (ref
was null, empty-dep effect didn't re-run), so containerWidth stuck
at 0 and the grid fell back to 4 columns × 200px forever. Switched
to a callback ref that attaches the observer the moment the
sentinel actually mounts.
- KeyboardHints surface the Tab (library) and I (info) shortcuts.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
dtoro
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