The track's radius is half its height, so its corners consume the whole
side and the global `superellipse(1.5)` squares the ends off — beside a
thumb that already opts out at `border-radius: 50%`, leaving a round knob
in a squared-off slot. Pair `corner-shape: round` with the radius, the way
every full-round radius in the repository does.
The corner-shape stylesheet spec recognizes 50%, 100%, and radii at or
above 99px, so a radius that is full-round only relative to its own box
passes it; the comment records that gap at the rule it affects.
Client feature plugins never import one another's components, so
ui-primitives is their only channel for sharing one. Nothing told an
author to look there first, and the package offered nothing to look
at: its README named six source files against forty-plus exports.
Add Tag (read-only capsule badge, eight tones) and Switch (36x20
toggle with a required accessible name), extend StateDotState with
idle for a tracked subject with no activity, and move ui-agent-preset,
ui-settings-plugins, and ui-settings-plugin-inventory onto them.
The plugin inventory's conditional tag referenced
--dsw-alias-state-warning-primary, which does not exist, so both
themes had been painting its hardcoded #b45309 fallback.
State the reuse rule as the first step of the new-component checklist,
and give the README a component catalog so the rule has something to
check. The rule is guidance, not a gate: a package may still write its
own control, and the Agent Note records the five that stay local.
Yichen Jiang