fix(stats): don't write sentence clip to expression-audio field

- `getStatsDirectMiningAudioFieldNames` now takes a `mode` param; sentence mode skips `ExpressionAudio`
- Update test expectation: `ExpressionAudio` should be `undefined` after sentence mining
- Clarify changelog wording for the audio-field fix
- Reformat `SearchTab.test.ts` assertions (no behavior change)

changes/fix-stats-vocab-example-mining.md

@@ -3,7 +3,7 @@ area: stats
 
 - Fixed vocab-page example sentence mining buttons failing when the Anki deck setting is blank or Yomitan card formats are ordered with a non-term card first.
 - Fixed vocab-page example word and audio mining so English subtitles are only written to Selection Text for sentence cards, leaving word cards to show the normal Yomitan dictionary glossary.
-- Fixed stats-page mining audio updates so generated sentence clips populate `SentenceAudio` when that field exists, while preserving configured expression-audio behavior for direct sentence cards.
+- Fixed stats-page sentence mining audio updates so generated sentence clips populate `SentenceAudio` without also writing the same clip to the configured expression-audio field.
 - Fixed stats-page word mining so the hidden Yomitan helper uses the same configured word-audio sources as the normal Yomitan plus button.
 - Fixed stats-page sentence mining to use the current Anki deck/settings at request time, create direct sentence cards before slow media generation completes, and include stored English subtitle text as Selection Text.
 - Fixed secondary subtitle auto-selection to prefer regular English tracks over Signs/Songs tracks when both are available.

src/core/services/__tests__/stats-server.test.ts

@@ -1852,7 +1852,7 @@ describe('stats server API routes', () => {
         const updateRequest = requests.find((request) => request.action === 'updateNoteFields');
         const audioValue = updateRequest?.params?.note?.fields?.SentenceAudio;
         assert.match(audioValue ?? '', /^\[sound:subminer_audio_\d+\.mp3\]$/);
-        assert.equal(updateRequest?.params?.note?.fields?.ExpressionAudio, audioValue);
+        assert.equal(updateRequest?.params?.note?.fields?.ExpressionAudio, undefined);
       });
     });
   });

src/core/services/stats-server.ts

@@ -172,6 +172,7 @@ function getStatsWordMiningAudioFieldName(
 function getStatsDirectMiningAudioFieldNames(
   ankiConfig: AnkiConnectConfig,
   noteInfo: StatsServerNoteInfo | null,
+  mode: 'sentence' | 'audio',
 ): string[] {
   const configuredAudioField = ankiConfig.fields?.audio ?? 'ExpressionAudio';
   if (!ankiConfig.isLapis?.enabled && !ankiConfig.isKiku?.enabled) {
@@ -185,6 +186,10 @@ function getStatsDirectMiningAudioFieldNames(
     ? resolveStatsNoteFieldName(noteInfo, configuredAudioField)
     : null;
 
+  if (mode === 'sentence') {
+    return uniqueFieldNames(sentenceAudioField);
+  }
+
   return uniqueFieldNames(sentenceAudioField, expressionAudioField);
 }
 
@@ -1395,7 +1400,7 @@ export function createStatsApp(
           client.storeMediaFile(audioFilename, audioBuffer),
         );
         const audioValue = `[sound:${audioFilename}]`;
-        for (const fieldName of getStatsDirectMiningAudioFieldNames(ankiConfig, noteInfo)) {
+        for (const fieldName of getStatsDirectMiningAudioFieldNames(ankiConfig, noteInfo, mode)) {
           mediaFields[fieldName] = audioValue;
         }
       } catch (err) {

stats/src/components/search/SearchTab.test.ts

@@ -22,11 +22,11 @@ test('SearchTab forwards stored secondary subtitle text when mining from search
 test('SearchTab enables headword sentence search by default and forwards the toggle', () => {
   const source = fs.readFileSync(SEARCH_TAB_PATH, 'utf8');
 
+  assert.match(source, /const \[searchByHeadword,\s*setSearchByHeadword\] = useState\(true\);/);
   assert.match(
     source,
-    /const \[searchByHeadword,\s*setSearchByHeadword\] = useState\(true\);/,
+    /apiClient\s*\.\s*searchSentences\(trimmed,\s*SEARCH_LIMIT,\s*searchByHeadword\)/,
   );
-  assert.match(source, /apiClient\s*\.\s*searchSentences\(trimmed,\s*SEARCH_LIMIT,\s*searchByHeadword\)/);
   assert.match(source, /checked=\{searchByHeadword\}/);
   assert.match(source, /setSearchByHeadword\(event\.target\.checked\)/);
 });