feat(trend): drop the focused-category subtitle from the trend card

src/client/components/contextView.tsx

@@ -486,9 +486,6 @@ export function makeContextView(
               onClick={() => { setDurationCurve(on => !on) }}
             >{t('trend.duration')}</button>
           </span>
-          {focusCat !== null
-            ? <span className="lc-card-sub">{t('trend.focus', { cat: kit.catLabel(focusCat) })}</span>
-            : null}
           <div className="lc-trend-ctl">
             <div className="lc-gran">
               <button

src/client/i18n.ts

@@ -92,7 +92,6 @@ export const DICT_ZH: Record<string, string> = {
   'gran.total': '全量',
   'gran.delta': '增量',
   'gran.modeHint': '全量：累计构成；增量：相对上一条请求的变化量',
-  'trend.focus': '仅展示 {cat}',
   'trend.adaptive': '自适应',
   'trend.adaptiveHint': '按当前可视范围内的柱子重新缩放高度，滚动时随之变化',
   'trend.duration': '耗时',
@@ -497,7 +496,6 @@ export const DICT_EN: Record<string, string> = {
   'gran.total': 'Total',
   'gran.delta': 'Delta',
   'gran.modeHint': 'Total: cumulative makeup; Delta: change vs the previous request',
-  'trend.focus': 'Showing {cat} only',
   'trend.adaptive': 'Adaptive',
   'trend.adaptiveHint': 'Rescale bar heights to the visible range, following the scroll',
   'trend.duration': 'Duration',

tests/client/components/contextView.spec.ts

@@ -455,15 +455,11 @@ describe('ContextView — interactions', () => {
     const segs = queryAll(m.container, '.lc-bar .lc-bar-stack > .lc-cat-seg')
     assert.equal(segs.length, 3)
     for (const s of segs) assert.equal(s.getAttribute('data-cat'), 'assistant')
-    assert.ok(text(m.container).includes(DICT_EN['trend.focus'].replace('{cat}', DICT_EN['cat.assistant'])),
-      'the card subtitle names the focused category')
 
-    // Collapsing the category restores the whole composition and drops the subtitle.
+    // Collapsing the category restores the whole composition.
     await click(queryAll(m.container, '.lc-br-cat-row')[5])
     assert.equal(text(query(m.container, '.lc-axis-top')), '420')
     assert.equal(queryAll(m.container, '.lc-bar[data-seq="4"] .lc-bar-stack > .lc-cat-seg').length, 5)
-    const trendCard = queryAll(m.container, '.lc-card').find(c => text(c).includes(DICT_EN['trend.title']))
-    assert.ok(trendCard !== undefined && trendCard.querySelector('.lc-card-sub') === null, 'unfocused: no subtitle')
     await m.unmount()
   })