debug(feed): trace 提示条被清的位置

frontend/src/views/Feed.vue

@@ -57,12 +57,16 @@ function clearPromptsForArticle(articleId: number) {
     const next = new Map(categoryPromptsByArticle.value)
     next.delete(articleId)
     categoryPromptsByArticle.value = next
+    // eslint-disable-next-line no-console
+    console.log('[clearPromptsForArticle] called for', articleId, 'stack:', new Error().stack?.split('\n').slice(1, 4).join(' | '))
   }
 }
 
 // 全清
 function clearAllPrompts() {
   if (categoryPromptsByArticle.value.size > 0) {
+    // eslint-disable-next-line no-console
+    console.log('[clearAllPrompts] called, stack:', new Error().stack?.split('\n').slice(1, 4).join(' | '))
     categoryPromptsByArticle.value = new Map()
   }
   if (categoryPromptTimer !== null) {