Two polish defects from the headless verification pass:
- .newSessionLabel/.footLabel declared their own transition shorthand,
which replaced .wide's opacity fade entirely (shorthands do not merge) —
the labels vanished instantly while everything else faded. The fade is
restated alongside max-width.
- The rail icons drifted off a common vertical axis: the 56px track holds
a 55px content box (1px column border), and the capsule rows kept their
1px border-width in the collapsed state, shaving their content to 23px
and pushing the search icon 2px right. Collapsed capsules now zero the
border-width (transitioning border, not border-color), the root gives
back the border pixel via asymmetric padding, and every surviving row
centers its icon — five glyphs on the track's 28px center.
imccyu
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