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.