refactor(plugins): drop the never-mutated isLoading ref from PluginLi…

…stWrapper

Nothing has assigned isLoading since #17048 removed the assignments around
the plugin fetch, so `isLoading || !pluginsData` only ever evaluated
`!pluginsData`. The store's `plugins` is `ref<Plugin[]>()`, undefined until
the fetch lands, so that guard alone still drives the skeleton branch.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TAug4a76FHxVfXWtQ7UwzT

chore(version): 2.0.0-rc15

chore(version): 2.0.0-rc14

fix(design-system): unreferenced component breaking dts emit, package…

… readme (#18939)

* fix(design-system): drop the unreferenced LogicalChooser so dts emit succeeds

tsdown makes every .vue under src/components a build entry, and
rolldown-plugin-dts cannot emit declarations for a component that no
included module imports, which failed the publish workflow's build step.
AdvancedFilterBuilder already renders its own AND/OR toggle.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019ZkqpB5i1xzpLWLAkKWgfT

* docs(design-system): add a package readme

Covers consuming the package (plugin install, barrel and per-component
imports, tree shaking, styles, task icons), the local scripts, and how to
publish a version from the Publish Design System workflow.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019ZkqpB5i1xzpLWLAkKWgfT

---------

Co-authored-by: Claude <noreply@anthropic.com>

build(version): 2.0.0-rc13