Three tabs became three collapsible sections in a column, because there are going to be more than
three. A tab strip works while the names fit on one line and degrades the moment they do not — it wraps,
or it scrolls, and either way the set stops being visible at a glance.
`type="multiple"`, so more than one can be open. Tabs enforced exactly one, which is right when the
panels are alternatives and wrong when they are parts of the same thing: the colours and the padding of
a layout are read together as often as separately.
The grid overlay went with them. Every panel shared one cell so the block stayed as tall as the tallest
and did not jump when the tab changed — a real problem that stacked sections do not have, because a
section that is closed occupies nothing and one that is open is as tall as it is.
`?tab=` still seeds which section starts open, so an old link keeps working and lands on the thing it
named.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
pastilhasandClaude Opus 5
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