debug(feed): trace 哪里调的 clearPrompts

frontend/src/views/Feed.vue

@@ -53,6 +53,8 @@ const articlesWithPrompts = computed(() => {
 
 // 移除某篇文章的所有提示条(8 秒超时 / 确认后 / 过滤变化)
 function clearPromptsForArticle(articleId: number) {
+  // eslint-disable-next-line no-console
+  console.log('[CLEAR_ONE]', articleId, 'stack:', new Error().stack?.split('\n').slice(2, 5).join(' | '))
   if (categoryPromptsByArticle.value.has(articleId)) {
     const next = new Map(categoryPromptsByArticle.value)
     next.delete(articleId)
@@ -62,6 +64,8 @@ function clearPromptsForArticle(articleId: number) {
 
 // 全清
 function clearAllPrompts() {
+  // eslint-disable-next-line no-console
+  console.log('[CLEAR_ALL] size=', categoryPromptsByArticle.value.size, 'stack:', new Error().stack?.split('\n').slice(2, 5).join(' | '))
   if (categoryPromptsByArticle.value.size > 0) {
     categoryPromptsByArticle.value = new Map()
   }