fix(chat): separate merged output segments

packages/client/src/components/hermes/chat/MessageItem.vue

@@ -228,6 +228,14 @@ const parsedThinking = computed(() =>
   parseThinking(props.message.content || "", { streaming: !!props.message.isStreaming }),
 );
 
+const segmentBoundary = '\uE000hermes-output-boundary\uE001';
+const assistantBodySegments = computed(() => {
+  const segments = props.message.contentSegments;
+  if (!segments || segments.length < 2) return parsedThinking.value.body ? [parsedThinking.value.body] : [];
+  const parsed = parseThinking(segments.join(segmentBoundary), { streaming: !!props.message.isStreaming });
+  return parsed.body.split(segmentBoundary).filter(segment => segment.trim());
+});
+
 // 优先使用来自 reasoning 字段/事件的思考文本；否则回退到从 content 解析的 <think> 标签。
 // 若两者共存，则拼接展示（罕见，但保持信息不丢）。
 const hasReasoningField = computed(() => !!(props.message.reasoning && props.message.reasoning.length > 0));
@@ -1111,11 +1119,12 @@ onBeforeUnmount(() => {
                 <MarkdownRenderer :content="thinkingFullText" />
               </div>
             </div>
-            <MarkdownRenderer
-              v-if="parsedThinking.body && message.role === 'assistant'"
-              :content="parsedThinking.body"
-              :heading-id-prefix="effectiveHeadingIdPrefix"
-            />
+            <template v-if="message.role === 'assistant'">
+              <template v-for="(segment, index) in assistantBodySegments" :key="index">
+                <hr v-if="index > 0" class="assistant-segment-divider" />
+                <MarkdownRenderer :content="segment" :heading-id-prefix="index ? `${effectiveHeadingIdPrefix}-${index}` : effectiveHeadingIdPrefix" />
+              </template>
+            </template>
 
             <!-- Render user message content -->
             <template v-if="message.role === 'user'">
@@ -1160,7 +1169,7 @@ onBeforeUnmount(() => {
 
             <!-- Render assistant message content -->
             <MarkdownRenderer
-              v-if="message.role === 'assistant' && message.content && !parsedThinking.body"
+              v-if="message.role === 'assistant' && message.content && !assistantBodySegments.length"
               :content="message.content"
               :heading-id-prefix="effectiveHeadingIdPrefix"
             />
@@ -1647,6 +1656,12 @@ onBeforeUnmount(() => {
   }
 }
 
+.assistant-segment-divider {
+  border: 0;
+  border-top: 1px solid var(--color-border-2);
+  margin: 12px 0;
+}
+
 .message-meta {
   display: flex;
   align-items: center;

packages/client/src/components/hermes/chat/MessageList.vue

@@ -910,7 +910,7 @@ defineExpose({
 }
 
 .run-end {
-  margin: 20px auto;
+  margin: -12px auto 0;
   text-align: center;
   color: var(--color-text-3);
   font-size: 12px;

packages/client/src/components/hermes/chat/groupRunMessages.ts

@@ -14,6 +14,7 @@ export function groupRunMessages(messages: Message[], runActive: boolean): Messa
       result.push({
         ...first,
         toolMessages: tools.length ? tools : undefined,
+        contentSegments: assistants.map(m => m.content).filter(text => text.trim()),
         id: assistants[assistants.length - 1].id,
         content: assistants.map(m => m.content).filter(text => text.trim()).join('\n\n'),
         reasoning: assistants.map(m => m.reasoning).filter(Boolean).join('\n\n') || undefined,

packages/client/src/stores/hermes/chat.ts

@@ -65,6 +65,7 @@ export interface Message {
   queued?: boolean
   systemType?: 'command' | 'error' | 'fork-divider' | 'run-end' | 'tool-group'
   toolMessages?: Message[]
+  contentSegments?: string[]
   commandAction?: string
   commandData?: Record<string, unknown>
   finishReason?: string | null