feat: 优化聊天代理功能，增加时间成本计算；调整对话状态管理，确保消息流处理更流畅；更新样式以提升用户体验。

server/routers/chat_router.py

@@ -123,6 +123,7 @@ async def chat_agent(
     db: Session = Depends(get_db),
 ):
     """使用特定智能体进行对话（需要登录）"""
+    start_time = asyncio.get_event_loop().time()
 
     logger.info(f"agent_id: {agent_id}, query: {query}, config: {config}, meta: {meta}")
 
@@ -319,6 +320,7 @@ async def chat_agent(
                 yield make_chunk(message="检测到敏感内容，已中断输出", status="error")
                 return
 
+            meta["time_cost"] = asyncio.get_event_loop().time() - start_time
             yield make_chunk(status="finished", meta=meta)
 
             # After streaming finished, save all messages from LangGraph state

web/src/assets/css/base.css

@@ -2,20 +2,20 @@
 /* color palette from <https://github.com/vuejs/theme> */
 /* https://material-foundation.github.io/material-theme-builder/ */
 :root {
-  --main-1000: #01151f;  /* 更深沉的深蓝黑 */
+  --main-1000: #01151f;
-  --main-900:  #023944;  /* 深海蓝 */
+  --main-900:  #023944;
-  --main-800:  #035065;  /* 深蓝绿 */
+  --main-800:  #035065;
-  --main-700:  #046a82;  /* 增加明度的蓝青色 */
+  --main-700:  #046a82;
-  --main-600:  #24839a;  /* 冷色调中略带灰 */
+  --main-600:  #24839a;
-  --main-500:  #3996ae;  /* 平衡且主色调友好 */
+  --main-500:  #3996ae;
-  --main-400:  #5faec2;  /* 更加柔和的中亮蓝 */
+  --main-400:  #5faec2;
-  --main-300:  #82c3d6;  /* 明亮通透，视觉清爽 */
+  --main-300:  #82c3d6;
-  --main-200:  #a3d8e8;  /* 比原先更清澈淡蓝 */
+  --main-200:  #a3d8e8;
-  --main-100:  #c4eaf5;  /* 接近原色，但稍微柔和 */
+  --main-100:  #c4eaf5;
-  --main-50:   #e1f6fb;  /* 极浅天蓝，适合背景过渡 */
+  --main-50:   #e1f6fb;
-  --main-40:   #eaf3f5;  /* 淡灰蓝调 */
+  --main-40:   #eaf3f5;
-  --main-30:   #f2fbfd;  /* 几近白的蓝调提示 */
+  --main-30:   #f7fbfd;
-  --main-20:   #f5f9fa;  /* 比原配色更均匀些 */
+  --main-20:   #f6f9fa;
   --main-10:   #fafcfd;
   --main-5:    #fcfefe;
   --main-1:    #fefefe;
@@ -23,21 +23,21 @@
 
 
   --gray-10000: #000000; /* 保持纯黑 */
-  --gray-2000:  #0d0d0d; /* 更精致的暗灰，用于极深背景 */
+  --gray-2000:  #0c0d0d; /* 更精致的暗灰，用于极深背景 */
-  --gray-1000:  #161616; /* 深灰黑，适用于主文本 */
+  --gray-1000:  #151616; /* 深灰黑，适用于主文本 */
-  --gray-900:   #1f1f1f;
+  --gray-900:   #1e1f1f;
-  --gray-800:   #333333; /* 标准深灰，适合背景 */
+  --gray-800:   #323333; /* 标准深灰，适合背景 */
-  --gray-700:   #4d4d4d;
+  --gray-700:   #4c4d4d;
-  --gray-600:   #707070; /* 调和中灰，适合次要文本 */
+  --gray-600:   #697070; /* 调和中灰，适合次要文本 */
-  --gray-500:   #999999; /* 更柔和的中灰色 */
+  --gray-500:   #979999; /* 更柔和的中灰色 */
-  --gray-400:   #bfbfbf;
+  --gray-400:   #bdbfbf;
-  --gray-300:   #d9d9d9; /* 修正了原300/200重复 */
+  --gray-300:   #d7d9d9; /* 修正了原300/200重复 */
-  --gray-200:   #e6e6e6; /* 稍微加深一点，便于分层 */
+  --gray-200:   #e4e6e6; /* 稍微加深一点，便于分层 */
-  --gray-150:   #f0f0f0;
+  --gray-150:   #eef0f0;
-  --gray-100:   #f2f2f2;
+  --gray-100:   #eff2f2;
-  --gray-50:    #f7f7f7;
+  --gray-50:    #f5f7f7;
-  --gray-25:    #fafafa;
+  --gray-25:    #f8fafa;
-  --gray-10:    #fcfcfc;
+  --gray-10:    #fafcfc;
   --gray-0:     #ffffff;
 
   --main-color: #016179;

web/src/components/AgentChatComponent.vue

@@ -244,13 +244,26 @@ const onGoingConvMessages = computed(() => {
 
 const conversations = computed(() => {
   const historyConvs = MessageProcessor.convertServerHistoryToMessages(currentThreadMessages.value);
-  if (onGoingConvMessages.value.length > 0) {
+  const threadState = currentThreadState.value;
+
+  // 如果有进行中的消息且线程状态显示正在流式处理，添加进行中的对话
+  if (onGoingConvMessages.value.length > 0 && threadState?.isStreaming) {
     const onGoingConv = {
       messages: onGoingConvMessages.value,
       status: 'streaming'
     };
     return [...historyConvs, onGoingConv];
   }
+
+  // 即使流式结束，如果历史记录为空但还有消息没有完全同步，也保持显示
+  if (historyConvs.length === 0 && onGoingConvMessages.value.length > 0 && !threadState?.isStreaming) {
+    const finalConv = {
+      messages: onGoingConvMessages.value,
+      status: 'finished'
+    };
+    return [finalConv];
+  }
+
   return historyConvs;
 });
 
@@ -322,7 +335,7 @@ const cleanupThreadState = (threadId) => {
 };
 
 // ==================== STREAM HANDLING LOGIC ====================
-const resetOnGoingConv = (threadId = null) => {
+const resetOnGoingConv = (threadId = null, preserveMessages = false) => {
   if (threadId) {
     // 清理指定线程的状态
     const threadState = getThreadState(threadId);
@@ -331,8 +344,18 @@ const resetOnGoingConv = (threadId = null) => {
         threadState.streamAbortController.abort();
         threadState.streamAbortController = null;
       }
+      // 如果指定要保留消息，则延迟清空
+      if (preserveMessages) {
+        // 延迟清空消息，给历史记录加载足够时间
+        setTimeout(() => {
+          if (threadState.onGoingConv) {
             threadState.onGoingConv = { msgChunks: {} };
           }
+        }, 100);
+      } else {
+        threadState.onGoingConv = { msgChunks: {} };
+      }
+    }
   } else {
     // 清理当前线程或所有线程的状态
     const targetThreadId = currentChatId.value;
@@ -343,8 +366,16 @@ const resetOnGoingConv = (threadId = null) => {
           threadState.streamAbortController.abort();
           threadState.streamAbortController = null;
         }
+        if (preserveMessages) {
+          setTimeout(() => {
+            if (threadState.onGoingConv) {
               threadState.onGoingConv = { msgChunks: {} };
             }
+          }, 100);
+        } else {
+          threadState.onGoingConv = { msgChunks: {} };
+        }
+      }
     } else {
       // 如果没有当前线程，清理所有线程状态
       Object.keys(chatState.threadStates).forEach(tid => {
@@ -390,13 +421,26 @@ const _processStreamChunk = (chunk, threadId) => {
       resetOnGoingConv(threadId);
       return true;
     case 'finished':
-      fetchThreadMessages({ agentId: currentAgentId.value, threadId: threadId });
+      // 先标记流式结束，但保持消息显示直到历史记录加载完成
-      resetOnGoingConv(threadId);
+      if (threadState) {
+        threadState.isStreaming = false;
+      }
+      // 异步加载历史记录，保持当前消息显示直到历史记录加载完成
+      fetchThreadMessages({ agentId: currentAgentId.value, threadId: threadId })
+        .finally(() => {
+          // 历史记录加载完成后，安全地清空当前进行中的对话
+          resetOnGoingConv(threadId, true);
+        });
       return true;
     case 'interrupted':
       // 中断状态，刷新消息历史
-      fetchThreadMessages({ agentId: currentAgentId.value, threadId: threadId });
+      if (threadState) {
-      resetOnGoingConv(threadId);
+        threadState.isStreaming = false;
+      }
+      fetchThreadMessages({ agentId: currentAgentId.value, threadId: threadId })
+        .finally(() => {
+          resetOnGoingConv(threadId, true);
+        });
       return true;
   }
 

web/src/components/RefsComponent.vue

@@ -1,6 +1,7 @@
 <template>
   <div class="refs" v-if="showRefs">
     <div class="tags">
+      <!-- 反馈 -->
       <span
         class="item btn"
         :class="{ 'disabled': feedbackState.hasSubmitted }"
@@ -19,35 +20,20 @@
         <DislikeFilled v-if="feedbackState.rating === 'dislike'" />
         <DislikeOutlined v-else />
       </span>
+      <!-- 模型名称 -->
       <span v-if="showKey('model') && getModelName(msg)" class="item" @click="console.log(msg)">
         <BulbOutlined /> {{ getModelName(msg) }}
       </span>
+      <!-- 复制 -->
       <span
         v-if="showKey('copy')"
-        class="item btn" @click="copyText(msg.content)" title="复制"><CopyOutlined /></span>
+        class="item btn" @click="copyText(msg.content)" title="复制"><CopyOutlined />
+      </span>
+
+      <!-- 重试 -->
       <span
         v-if="showKey('regenerate')"
-        class="item btn" @click="regenerateMessage()" title="重新生成"><ReloadOutlined /></span>
+        class="item btn" @click="regenerateMessage()" title="重新生成"><ReloadOutlined />
-      <span
-        v-if="isLatestMessage && showKey('subGraph') && hasSubGraphData(msg)"
-        class="item btn"
-        @click="openGlobalRefs('graph')"
-      >
-        <DeploymentUnitOutlined /> 关系图
-      </span>
-      <span
-        class="item btn"
-        v-if="isLatestMessage && showKey('webSearch') && msg.refs?.web_search.results.length > 0"
-        @click="openGlobalRefs('webSearch')"
-      >
-        <GlobalOutlined /> 网页搜索 {{ msg.refs.web_search?.results.length }}
-      </span>
-      <span
-        class="item btn"
-        v-if="isLatestMessage && showKey('knowledgeBase') && hasKnowledgeBaseData(msg)"
-        @click="openGlobalRefs('knowledgeBase')"
-      >
-        <FileTextOutlined /> 知识库
       </span>
       </div>
   </div>
@@ -77,10 +63,7 @@ import { ref, computed, reactive, onMounted } from 'vue'
 import { useClipboard } from '@vueuse/core'
 import { message } from 'ant-design-vue'
 import {
-  GlobalOutlined,
-  FileTextOutlined,
   CopyOutlined,
-  DeploymentUnitOutlined,
   BulbOutlined,
   ReloadOutlined,
   LikeOutlined,
@@ -152,25 +135,6 @@ const showRefs = computed(() => {
   return (msg.value.role=='received' || msg.value.role=='assistant') && msg.value.status=='finished';
 })
 
-// 打开全局refs抽屉
-const openGlobalRefs = (type) => {
-  emit('openRefs', {
-    type,
-    refs: msg.value.refs
-  })
-}
-
-const hasSubGraphData = (msg) => {
-  return msg.refs &&
-         msg.refs.graph_base &&
-         msg.refs.graph_base.results.nodes.length > 0;
-}
-
-const hasKnowledgeBaseData = (msg) => {
-  return msg.refs &&
-         msg.refs.knowledge_base &&
-         msg.refs.knowledge_base.results.length > 0;
-}
 
 // 添加重新生成方法
 const regenerateMessage = () => {