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Date: Wed, 17 Jun 2026 23:41:13 +0800
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---
 src/composables/ai/useAiVirtualScroll.ts | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/composables/ai/useAiVirtualScroll.ts b/src/composables/ai/useAiVirtualScroll.ts
index 1610d62..8396c62 100644
--- a/src/composables/ai/useAiVirtualScroll.ts
+++ b/src/composables/ai/useAiVirtualScroll.ts
@@ -136,7 +136,12 @@ export function useAiVirtualScroll(options: AiVirtualScrollOptions) {
 
   /** 是否应渲染该项内容(IO 可见 或 pinned)。 */
   function shouldRender(key: string): boolean {
-    return renderedKeys.value.has(key) || pinnedKeys.value.has(key)
+    // 🔍 诊断(P0 消息重叠):临时禁用虚拟滚动裁剪,所有消息内容恒渲染,
+    // 隔离"历史消息打开全重叠"根因。若禁用后重叠消失→虚拟滚动时序根因;
+    // 若仍重叠→CSS/markdown DOM 根因。定位后回退此改动。
+    void key
+    return true
+    // return renderedKeys.value.has(key) || pinnedKeys.value.has(key)
   }
 
   /** 更新 pinned 集合(调用方 watch 流式末条后传入新集合)。 */