feat(stats): dashboard updates (#50)

stats/src/components/vocabulary/FrequencyRankTable.test.tsx

@@ -0,0 +1,43 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { renderToStaticMarkup } from 'react-dom/server';
+import { FrequencyRankTable } from './FrequencyRankTable';
+import type { VocabularyEntry } from '../../types/stats';
+
+function makeEntry(over: Partial<VocabularyEntry>): VocabularyEntry {
+  return {
+    wordId: 1,
+    headword: '日本語',
+    word: '日本語',
+    reading: 'にほんご',
+    frequency: 5,
+    frequencyRank: 100,
+    animeCount: 1,
+    partOfSpeech: null,
+    firstSeen: 0,
+    lastSeen: 0,
+    ...over,
+  } as VocabularyEntry;
+}
+
+test('renders headword and reading inline in a single column (no separate Reading header)', () => {
+  const entry = makeEntry({});
+  const markup = renderToStaticMarkup(
+    <FrequencyRankTable words={[entry]} knownWords={new Set()} />,
+  );
+  assert.ok(!markup.includes('>Reading<'), 'should not have a Reading column header');
+  assert.ok(markup.includes('日本語'), 'should include the headword');
+  assert.ok(markup.includes('にほんご'), 'should include the reading inline');
+});
+
+test('omits reading when reading equals headword', () => {
+  const entry = makeEntry({ headword: 'カレー', word: 'カレー', reading: 'カレー' });
+  const markup = renderToStaticMarkup(
+    <FrequencyRankTable words={[entry]} knownWords={new Set()} />,
+  );
+  assert.ok(markup.includes('カレー'), 'should include the headword');
+  assert.ok(
+    !markup.includes('【'),
+    'should not render any bracketed reading when equal to headword',
+  );
+});