fix: ü display

src/data/idioms.txt

@@ -24161,6 +24161,7 @@
 雨鬣霜蹄
 雪上加霜
 雪中送炭
+雪中送碳
 雪中鸿爪
 雪兆丰年
 雪北香南
@@ -26211,4 +26212,4 @@
 龟龄鹤算
 龟龙片甲
 龟龙鳞凤
-龟龙麟凤
+龟龙麟凤

src/logic/idioms.ts

@@ -21,7 +21,12 @@ export function getIdiom(word: string): [string, string | undefined] | undefined
 
 export function getPinyin(word: string) {
   const data = getIdiom(word)
-  if (data?.[1])
-    return data[1].split(/\s+/g)
-  return Pinyin(data?.[0] || toSimplified(word), { style: Pinyin.STYLE_TONE2 }).map(i => i[0])
+  const parts = data?.[1]
+    ? data[1].split(/\s+/g)
+    : Pinyin(data?.[0] || toSimplified(word), { style: Pinyin.STYLE_TONE2 }).map(i => i[0])
+  // https://baike.baidu.com/item/%E6%B1%89%E8%AF%AD%E6%8B%BC%E9%9F%B3%E6%96%B9%E6%A1%88/1884432
+  return parts.map(i => i
+    .replace(/^(y|j|q|x)u([0-9]?)$/g, '$1v$2')
+    .replace(/^yu(\w+)([0-9]?)$/g, 'yv$1$2'),
+  )
 }