SpecColumn from @kuppwest/apple-clean. Use via `window.KuppwestAppleClean.SpecColumn` (bundle loaded from the root `_ds_bundle.js`). Wrap the tree in `<Page>` (full provider chain in README.md — components read theme/i18n from that context).

White spec panel (`.kwac-spec-col`) with a heading and a two-column key/value
table (`.kwac-spec-table`): muted labels left, semibold values right,
hairlines between rows. Child of `SpecGrid`.

## Props

```ts
interface SpecColumnProps {
  /** Panel heading, underlined with a 1px ink rule. */
  title: string;
  /** Label/value pairs; values are right-aligned and semibold. */
  rows: SpecRow[];
}
```