refactor: backstage design review

refactor: improve empty state

refactor: review schedule design

- fit as many elements as possible
- expose cycle interval as an option
- stabilise rundown reference
- style tweaks

apps/client/src/common/components/title-card/TitleCard.tsx

@@ -1,6 +1,7 @@
 import { ForwardedRef, forwardRef } from 'react';
 
 import { useTranslation } from '../../../translation/TranslationProvider';
+import { cx } from '../../utils/styleUtils';
 
 import './TitleCard.scss';
 
@@ -18,9 +19,9 @@ const TitleCard = forwardRef((props: TitleCardProps, ref: ForwardedRef<HTMLDivEl
   const accent = label === 'now';
 
   return (
-    <div className={`title-card ${className}`} ref={ref}>
+    <div className={cx(['title-card', className])} ref={ref}>
       <span className='title-card__title'>{title}</span>
-      <span className={accent ? 'title-card__label title-card__label--accent' : 'title-card__label'}>
+      <span className={cx(['title-card__label', accent && 'title-card__label--accent'])}>
         {label && getLocalizedString(`common.${label}`)}
       </span>
       <div className='title-card__secondary'>{secondary}</div>