refactor(quality): Q18 前端巨型组件拆分 — TraceManager 605L→331L (-45%), 提取 types + trace-helpers + SpanTreeNode + TraceDetailDialog + SpanDetailDialog 5 个独立文件, 修复 SpanTreeNode 内联定义反模式(每次 render 重建组件函数), 零逻辑变更, ESLint errors=0/warnings=64/any=0, tsc -b=0, npm build✓, 17/17 测试通过

PROJECT_EVALUATION.md

@@ -129,7 +129,7 @@
 | ~~`api.ts` 1324 行/352 方法~~ → 已拆分为 12 个域文件 (api/kubernetes.ts, deploy.ts, monitor.ts 等) | ✅ 已解决 | 前端 | ~~P0~~ done |
 | 前端 **1026 处** `any` 类型 | 类型安全缺失，重构风险高 | 前端全局 | ~~P0~~ **done** (any 1076→40, unused 25→6, console 93→1, tsc --noEmit=0) |
 | ~~K8s 双路由体系（集群域+Kuboard 域）~~ → code 路由统一为主，ID 路由标记 deprecated 向后兼容 | ✅ 已解决 | 后端 | ~~P1~~ done |
-| 25 个 ≥500 行巨型组件 | 拆分困难 | 前端 | P1 → **Q6-Q17 done: 最大组件 ResourceVisualEditor 882L→282L (-68%) + AgentCLI 814L→521L (-36%) + SystemSettingsTab 754L→173L (-77%) + NamespaceResourcePage 719L→300L (-58%) + ApprovalWorkflowPage 705L→167L (-76%) + PipelineRunDetail 678L→273L (-60%) + CloudServerImport 699L→404L (-42%，any[]→具体接口) + UnifiedQueryPanel 682L→529L (-22%) + ServerManager 652L→442L (-32%) + PipelineEditor 676L→406L (-40%) + RdpDialog 642L→442L (-31%) + **DeploymentEditService 627L→394L (-37%)**，累计提取 53 个独立组件文件** |
+| 25 个 ≥500 行巨型组件 | 拆分困难 | 前端 | P1 → **Q6-Q18 done: 最大组件 ResourceVisualEditor 882L→282L (-68%) + AgentCLI 814L→521L (-36%) + SystemSettingsTab 754L→173L (-77%) + NamespaceResourcePage 719L→300L (-58%) + ApprovalWorkflowPage 705L→167L (-76%) + PipelineRunDetail 678L→273L (-60%) + CloudServerImport 699L→404L (-42%，any[]→具体接口) + UnifiedQueryPanel 682L→529L (-22%) + ServerManager 652L→442L (-32%) + PipelineEditor 676L→406L (-40%) + RdpDialog 642L→442L (-31%) + DeploymentEditService 627L→394L (-37%) + **TraceManager 605L→331L (-45%，修复 SpanTreeNode 内联定义反模式)**，累计提取 58 个独立组件文件** |
 
 ### 3.2 🟡 中优先级
 

ROADMAP.md

@@ -489,6 +489,45 @@ services/api.ts (1324L)
 | Q15 | 前端巨型组件拆分（PipelineEditor 676L→406L，提取 types + TaskCard + TaskEditorPanel + PipelineLogDialog + RunsHistoryTab + PipelineMembersTab） | P0 | **done** |
 | Q16 | 前端巨型组件拆分（RdpDialog 642L→442L，提取 types + rdpp-utils + RdpDialogHeader） | P0 | **done** |
 | Q17 | 前端巨型组件拆分（DeploymentEditService 627L→394L，提取 types + ServiceCreateForm + IngressCreateForm + ServiceListItem + IngressListItem） | P0 | **done** |
+| Q18 | 前端巨型组件拆分（TraceManager 605L→331L，提取 types + trace-helpers + SpanTreeNode + TraceDetailDialog + SpanDetailDialog，修复 SpanTreeNode 内联定义反模式） | P0 | **done** |
+
+---
+
+## Q18: 前端巨型组件拆分 — TraceManager [done]
+
+**问题**: `TraceManager.tsx`（605 行）是 Q17 拆分后项目最大的核心业务组件之一（排除 UI 库 sidebar/data-table），包含链路追踪管理页面的全部逻辑：类型定义（Trace/Span/SpanLog/ServiceMetrics）、状态徽章/Kind 图标/状态颜色/耗时格式化等工具函数、Span 树构建、**SpanTreeNode 递归组件内联定义（每次父组件 render 重新创建组件函数，性能反模式）**、Traces/Services/Metrics 三个 Tab 的完整 JSX、Trace 详情弹窗（Span 树可视化）、Span 详情弹窗（基本信息+标签+日志）。单文件过大导致维护困难。
+
+**已完成 (2026-07-08)**:
+
+将类型/工具函数、共享 JSX 辅助、递归 Span 树组件、两个详情弹窗提取为 `trace-manager/` 子目录下的独立文件:
+
+| 新文件 | 行数 | 职责 |
+|--------|------|------|
+| `types.ts` | 90 | Trace/Span/SpanLog/ServiceMetrics 接口 + formatDuration/getStatusColor/buildSpanTree 纯函数 |
+| `trace-helpers.tsx` | 44 | getStatusBadge（状态徽章）+ getKindIcon（Span kind 图标）共享 JSX 辅助，接收 TFunction 参数 |
+| `SpanTreeNode.tsx` | 71 | 递归 Span 树节点组件（展开/折叠 + 时间轴宽度 + 状态色 + 点击选中 Span），接收 span/level/totalDuration/onSelectSpan props |
+| `TraceDetailDialog.tsx` | 80 | Trace 详情弹窗（服务/操作/总耗时/状态摘要 + ScrollArea 内 Span 树可视化） |
+| `SpanDetailDialog.tsx` | 91 | Span 详情弹窗（基本信息网格 + 标签键值对 + 日志列表） |
+
+主文件 `TraceManager.tsx` 从 **605 行降至 331 行**（-45%），仅保留：状态管理（traces/services/loading/搜索/筛选/时间范围/activeTab/selectedTrace/selectedSpan/弹窗开关）、数据加载（fetchData/fetchTraces/fetchServices/fetchTraceDetail）、派生数据（filteredTraces/serviceNames）、handleSelectSpan 回调、pageTabs、tracesToolbar（搜索+服务/状态/时间筛选+刷新）、PageShell 布局（StatStrip 统计条 + Traces 表格 + Services 表格 + Metrics 卡片）、以及 TraceDetailDialog + SpanDetailDialog 两个弹窗组件的编排。
+
+**关键改进**: 原 `SpanTreeNode` 定义在主组件函数体内（`const SpanTreeNode: React.FC = (...)` 内联），每次父组件 render 都会创建新的组件函数引用 → React 无法复用，整个 Span 子树重渲染。提取为模块级独立组件后，组件引用稳定，避免不必要的子树重渲染。
+
+**提取原则**: types 为纯数据/类型（零 React 依赖）；trace-helpers 为共享 JSX 辅助（getStatusBadge/getKindIcon 返回 ReactNode，接收 TFunction 以支持 i18n）；SpanTreeNode 为独立递归组件（模块级定义，接收 4 个 props）；TraceDetailDialog/SpanDetailDialog 为受控展示组件（接收 open/onOpenChange/数据 props，内部用 useTranslation）。零逻辑变更。
+
+**验收标准**:
+- [x] TraceManager.tsx 从 605 行降至 **331 行**（-45%）
+- [x] 5 个提取的文件全部 < 95 行（最大 SpanDetailDialog 91 行）
+- [x] `tsc -b` 零错误
+- [x] `npm run build` 零错误（✓ built in 18.23s）
+- [x] ESLint errors 保持 **0**（trace-manager/ 目录零 warnings）
+- [x] ESLint warnings 保持 **64**（无新增）
+- [x] 全局 ESLint any 保持 **0**
+- [x] `go build` 零错误
+- [x] 17/17 集成回归测试通过（零回归）
+- [x] Docker 部署 healthy，前端页面正常加载（HTTP 200），traces API 返回 200
+- [x] 链路追踪管理页功能不变（Traces/Services/Metrics 三 Tab + Trace 详情 Span 树 + Span 详情标签/日志全部正常）
+- [x] SpanTreeNode 内联定义反模式已修复（提取为模块级稳定组件引用）
 
 ---
 

TDD_PLAN.md

@@ -1380,3 +1380,57 @@ python3 tests/integration_test.py --host 127.0.0.1 --port 8080
 - [x] Docker 部署 healthy，前端页面正常加载（HTTP 200）
 - [x] 服务器管理页功能不变（列表/搜索/筛选/分页/选择/批量删除/CSV 导出/创建编辑/终端/RDP/文件浏览全部正常）
 
+## Q18: 前端巨型组件拆分 — TraceManager
+
+### 验证用例
+
+```bash
+# U1: Go 编译
+cd /srv/aiops/backend && go build ./...
+# 期望: 零错误
+
+# U2: TypeScript 编译
+cd /srv/aiops/frontend && npx tsc -b
+# 期望: 零错误
+
+# U3: Vite 构建
+npm run build 2>&1 | tail -3
+# 期望: built in Ns
+
+# U4: 拆分后文件行数
+wc -l src/components/monitor/trace/TraceManager.tsx src/components/monitor/trace/trace-manager/*.ts src/components/monitor/trace/trace-manager/*.tsx
+# 期望: TraceManager < 340L, 其余 < 95L
+
+# U5: ESLint 全局指标
+npx eslint src/ --format json | python3 -c "
+import json, sys
+d = json.load(sys.stdin)
+print(f'errors={sum(1 for r in d for m in r[\"messages\"] if m[\"severity\"]==2)}')
+print(f'any={sum(1 for r in d for m in r[\"messages\"] if m.get(\"ruleId\")==\"@typescript-eslint/no-explicit-any\")}')
+"
+# 期望: errors=0, any=0
+
+# U6: 集成测试
+python3 tests/integration_test.py --host 127.0.0.1 --port 8080
+# 期望: 17/17 passed
+
+# U7: traces API 可用（链路追踪页面后端代理）
+TOKEN=$(curl -s http://127.0.0.1:8080/api/v1/auth/login -X POST -H 'Content-Type: application/json' -d '{"username":"admin","password":"123456"}' | python3 -c 'import sys,json;print(json.load(sys.stdin)["data"]["token"])')
+curl -s -o /dev/null -w "%{http_code}" -H "Authorization: Bearer ${TOKEN}" "http://127.0.0.1:8080/api/v1/traces?timeRange=1h"
+# 期望: 200
+```
+
+### 通过标准
+- [x] TraceManager.tsx 从 605 行降至 **331 行**（< 340 ✅，-45%）
+- [x] 5 个提取文件全部 < 95 行（types 90L + trace-helpers 44L + SpanTreeNode 71L + TraceDetailDialog 80L + SpanDetailDialog 91L）
+- [x] `tsc -b` 零错误
+- [x] `npm run build` 零错误（✓ built in 18.23s）
+- [x] ESLint errors 保持 **0**（trace-manager/ 目录零 warnings）
+- [x] ESLint warnings 保持 **64**（无新增）
+- [x] 全局 ESLint any 保持 **0**
+- [x] `go build` 零错误
+- [x] 17/17 集成回归测试通过（零回归）
+- [x] Docker 部署 healthy，前端页面正常加载（HTTP 200），traces API 返回 200
+- [x] 链路追踪管理页功能不变（Traces/Services/Metrics 三 Tab + Trace 详情 Span 树 + Span 详情标签/日志全部正常）
+- [x] SpanTreeNode 内联定义反模式已修复（提取为模块级稳定组件引用）
+

frontend/src/components/monitor/trace/TraceManager.tsx

@@ -1,88 +1,30 @@
 import React, { useState, useEffect } from 'react';
 import { useTranslation } from 'react-i18next';
 import {
-  
   Search,
-  Clock,
-  Server,
-  ArrowRight,
-  ChevronRight,
-  ChevronDown,
-  Zap,
-  AlertCircle,
-  CheckCircle,
-  XCircle,
+  Eye,
+  RefreshCw,
+  GitBranch,
   BarChart3,
   TrendingUp,
-  RefreshCw,
-  Eye,
-  GitBranch,
-  Code,
-  Box,
 } from 'lucide-react';
 
 import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
-import { Badge } from '@/components/ui/badge';
-import { Card, CardContent, CardHeader, CardTitle} from '@/components/ui/card';
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
 import { StatStrip } from '@/components/ui/stat-strip';
 import {
-  Dialog, DialogContent, DialogHeader, DialogTitle, DialogDescription
-} from '@/components/ui/dialog';
-import {
-  Select, SelectContent, SelectItem, SelectTrigger, SelectValue
+  Select, SelectContent, SelectItem, SelectTrigger, SelectValue,
 } from '@/components/ui/select';
-import { Label } from '@/components/ui/label';
-import { Separator } from '@/components/ui/separator';
-import { ScrollArea } from '@/components/ui/scroll-area';
 import { toast } from 'sonner';
 import { traceApi } from '@/api';
 import { PageShell } from '@/components/layout/PageShell';
 import { PageLoading } from '@/components/layout/PageLoading';
 import { PageEmpty } from '@/components/layout/PageEmpty';
-import type { JsonData } from '@/types/common';
-
-interface Trace {
-  id: string;
-  traceId: string;
-  serviceName: string;
-  operationName: string;
-  startTime: string;
-  duration: number;
-  status: 'success' | 'error' | 'pending';
-  spanCount: number;
-  tags: Record<string, string>;
-  spans?: Span[];
-}
-
-interface Span {
-  id: string;
-  spanId: string;
-  parentSpanId?: string;
-  serviceName: string;
-  operationName: string;
-  startTime: string;
-  duration: number;
-  status: 'success' | 'error' | 'pending';
-  kind: 'client' | 'server' | 'producer' | 'consumer' | 'internal';
-  tags: Record<string, string>;
-  logs: SpanLog[];
-  children: Span[];
-}
-
-interface SpanLog {
-  timestamp: string;
-  fields: Record<string, string>;
-}
-
-interface ServiceMetrics {
-  serviceName: string;
-  requestCount: number;
-  errorRate: number;
-  avgDuration: number;
-  p95Duration: number;
-  p99Duration: number;
-}
+import { getStatusBadge } from './trace-manager/trace-helpers';
+import { formatDuration, type Trace, type Span, type ServiceMetrics } from './trace-manager/types';
+import TraceDetailDialog from './trace-manager/TraceDetailDialog';
+import SpanDetailDialog from './trace-manager/SpanDetailDialog';
 
 const TraceManager: React.FC = () => {
   const { t } = useTranslation(['monitor', 'common']);
@@ -129,55 +71,22 @@ const TraceManager: React.FC = () => {
     }
   };
 
-  const fetchTraceDetail = async (traceId: string) => {
+  const fetchTraceDetail = async (traceId: string): Promise<Span[] | undefined> => {
     try {
       const res = await traceApi.getTraceDetail(traceId);
-      return res.data;
+      return res.data?.spans;
     } catch {
       toast.error(t('monitor:traceMgr.fetchDetailFailed'));
-      return null;
+      return undefined;
     }
   };
 
-  const getStatusBadge = (status: string) => {
-    switch (status) {
-      case 'success':
-        return <Badge variant="default" className="bg-green-500 gap-1"><CheckCircle className="w-3 h-3" />{t('common:success')}</Badge>;
-      case 'error':
-        return <Badge variant="destructive" className="gap-1"><XCircle className="w-3 h-3" />{t('monitor:traceError')}</Badge>;
-      case 'pending':
-        return <Badge variant="outline" className="gap-1"><Clock className="w-3 h-3" />{t('monitor:traceMgr.inProgress')}</Badge>;
-      default:
-        return <Badge variant="secondary">{t('common:unknown')}</Badge>;
-    }
+  const handleSelectSpan = (span: Span) => {
+    setSelectedSpan(span);
+    setSpanDetailOpen(true);
   };
 
-  const getKindIcon = (kind: string) => {
-    switch (kind) {
-      case 'client': return <ArrowRight className="w-4 h-4" />;
-      case 'server': return <Server className="w-4 h-4" />;
-      case 'producer': return <Zap className="w-4 h-4" />;
-      case 'consumer': return <Box className="w-4 h-4" />;
-      default: return <Code className="w-4 h-4" />;
-    }
-  };
-
-  const getStatusColor = (status: string) => {
-    switch (status) {
-      case 'success': return 'bg-green-500';
-      case 'error': return 'bg-red-500';
-      case 'pending': return 'bg-yellow-500';
-      default: return 'bg-[var(--dg-bg-active)]';
-    }
-  };
-
-  const formatDuration = (ms: number) => {
-    if (ms < 1) return `${(ms * 1000).toFixed(2)}μs`;
-    if (ms < 1000) return `${ms.toFixed(2)}ms`;
-    return `${(ms / 1000).toFixed(2)}s`;
-  };
-
-  const filteredTraces = traces.filter(trace => {
+  const filteredTraces = traces.filter((trace) => {
     const matchSearch = trace.traceId.toLowerCase().includes(searchQuery.toLowerCase()) ||
                        trace.operationName.toLowerCase().includes(searchQuery.toLowerCase());
     const matchService = serviceFilter === 'all' || trace.serviceName === serviceFilter;
@@ -185,82 +94,7 @@ const TraceManager: React.FC = () => {
     return matchSearch && matchService && matchStatus;
   });
 
-  const serviceNames = Array.from(new Set(traces.map(t => t.serviceName)));
-
-  // 构建Span树
-  const buildSpanTree = (spans: Span[]): Span[] => {
-    const spanMap = new Map<string, Span>();
-    const roots: Span[] = [];
-    
-    spans.forEach(span => {
-      spanMap.set(span.spanId, { ...span, children: [] });
-    });
-    
-    spans.forEach(span => {
-      const node = spanMap.get(span.spanId)!;
-      if (span.parentSpanId && spanMap.has(span.parentSpanId)) {
-        const parent = spanMap.get(span.parentSpanId)!;
-        parent.children = parent.children || [];
-        parent.children.push(node);
-      } else {
-        roots.push(node);
-      }
-    });
-    
-    return roots;
-  };
-
-  // 渲染Span树
-  const SpanTreeNode: React.FC<{ span: Span; level: number; totalDuration: number }> = ({ span, level, totalDuration }) => {
-    const [expanded, setExpanded] = useState(true);
-    const widthPercent = totalDuration > 0 ? (span.duration / totalDuration) * 100 : 0;
-    const _offsetPercent = 0; // Simplified
-
-    return (
-      <div className="select-none">
-        <div
-          className="flex items-center py-2 hover:bg-muted/50 cursor-pointer border-l-2 border-transparent hover:border-blue-500"
-          style={{ paddingLeft: `${level * 24 + 12}px` }}
-          onClick={() => { setSelectedSpan(span); setSpanDetailOpen(true); }}
-        >
-          {span.children?.length > 0 && (
-            <Button
-              variant="ghost"
-              size="sm"
-              className="h-4 w-4 p-0 mr-1"
-              onClick={(e) => { e.stopPropagation(); setExpanded(!expanded); }}
-            >
-              {expanded ? <ChevronDown className="w-3 h-3" /> : <ChevronRight className="w-3 h-3" />}
-            </Button>
-          )}
-          {!span.children?.length && <span className="w-5" />}
-          
-          <div className="flex items-center gap-2 flex-1 min-w-0">
-            {getKindIcon(span.kind)}
-            <span className="font-medium truncate">{span.operationName}</span>
-            <span className="text-xs text-muted-foreground">{span.serviceName}</span>
-          </div>
-          
-          <div className="flex items-center gap-4">
-            <div className="w-32 h-4 bg-muted rounded overflow-hidden">
-              <div
-                className={`h-full ${getStatusColor(span.status)}`}
-                style={{ width: `${Math.max(widthPercent, 1)}%` }}
-              />
-            </div>
-            <span className="text-sm text-muted-foreground w-20 text-right">
-              {formatDuration(span.duration)}
-            </span>
-            {span.status === 'error' && <AlertCircle className="w-4 h-4 text-red-500" />}
-          </div>
-        </div>
-        
-        {expanded && span.children?.map(child => (
-          <SpanTreeNode key={child.spanId} span={child} level={level + 1} totalDuration={totalDuration} />
-        ))}
-      </div>
-    );
-  };
+  const serviceNames = Array.from(new Set(traces.map((tr) => tr.serviceName)));
 
   const pageTabs = [
     { id: 'traces', label: t('monitor:traceMgr.tabTraces') },
@@ -270,51 +104,51 @@ const TraceManager: React.FC = () => {
 
   const tracesToolbar = activeTab === 'traces' ? (
     <div className="flex flex-wrap items-center justify-between gap-4 w-full">
-            <div className="flex items-center gap-2 flex-1 min-w-[400px]">
-              <div className="relative flex-1">
-                <Search className="absolute left-3 top-1/2 -translate-y-1/2 w-4 h-4 text-muted-foreground" />
-                <Input
-                  placeholder={t('monitor:traceMgr.searchPlaceholder')}
-                  value={searchQuery}
-                  onChange={(e) => setSearchQuery(e.target.value)}
-                  className="pl-10"
-                />
-              </div>
-              <Select value={serviceFilter} onValueChange={setServiceFilter}>
-                <SelectTrigger className="w-[150px]">
-                  <SelectValue placeholder={t('monitor:traceService')} />
-                </SelectTrigger>
-                <SelectContent>
-                  <SelectItem value="all">{t('monitor:traceMgr.allServices')}</SelectItem>
-                  {serviceNames.map(s => (
-                    <SelectItem key={s} value={s}>{s}</SelectItem>
-                  ))}
-                </SelectContent>
-              </Select>
-              <Select value={statusFilter} onValueChange={setStatusFilter}>
-                <SelectTrigger className="w-[120px]">
-                  <SelectValue placeholder={t('monitor:traceStatus')} />
-                </SelectTrigger>
-                <SelectContent>
-                  <SelectItem value="all">{t('monitor:allStatus')}</SelectItem>
-                  <SelectItem value="success">{t('common:success')}</SelectItem>
-                  <SelectItem value="error">{t('monitor:traceError')}</SelectItem>
-                  <SelectItem value="pending">{t('monitor:traceMgr.inProgress')}</SelectItem>
-                </SelectContent>
-              </Select>
-              <Select value={timeRange} onValueChange={setTimeRange}>
-                <SelectTrigger className="w-[120px]">
-                  <SelectValue />
-                </SelectTrigger>
-                <SelectContent>
-                  <SelectItem value="15m">{t('monitor:traceMgr.min15')}</SelectItem>
-                  <SelectItem value="1h">{t('monitor:traceMgr.hour1')}</SelectItem>
-                  <SelectItem value="6h">{t('monitor:traceMgr.hour6')}</SelectItem>
-                  <SelectItem value="24h">{t('monitor:traceMgr.hour24')}</SelectItem>
-                  <SelectItem value="7d">{t('monitor:traceMgr.day7')}</SelectItem>
-                </SelectContent>
-              </Select>
-            </div>
+      <div className="flex items-center gap-2 flex-1 min-w-[400px]">
+        <div className="relative flex-1">
+          <Search className="absolute left-3 top-1/2 -translate-y-1/2 w-4 h-4 text-muted-foreground" />
+          <Input
+            placeholder={t('monitor:traceMgr.searchPlaceholder')}
+            value={searchQuery}
+            onChange={(e) => setSearchQuery(e.target.value)}
+            className="pl-10"
+          />
+        </div>
+        <Select value={serviceFilter} onValueChange={setServiceFilter}>
+          <SelectTrigger className="w-[150px]">
+            <SelectValue placeholder={t('monitor:traceService')} />
+          </SelectTrigger>
+          <SelectContent>
+            <SelectItem value="all">{t('monitor:traceMgr.allServices')}</SelectItem>
+            {serviceNames.map((s) => (
+              <SelectItem key={s} value={s}>{s}</SelectItem>
+            ))}
+          </SelectContent>
+        </Select>
+        <Select value={statusFilter} onValueChange={setStatusFilter}>
+          <SelectTrigger className="w-[120px]">
+            <SelectValue placeholder={t('monitor:traceStatus')} />
+          </SelectTrigger>
+          <SelectContent>
+            <SelectItem value="all">{t('monitor:allStatus')}</SelectItem>
+            <SelectItem value="success">{t('common:success')}</SelectItem>
+            <SelectItem value="error">{t('monitor:traceError')}</SelectItem>
+            <SelectItem value="pending">{t('monitor:traceMgr.inProgress')}</SelectItem>
+          </SelectContent>
+        </Select>
+        <Select value={timeRange} onValueChange={setTimeRange}>
+          <SelectTrigger className="w-[120px]">
+            <SelectValue />
+          </SelectTrigger>
+          <SelectContent>
+            <SelectItem value="15m">{t('monitor:traceMgr.min15')}</SelectItem>
+            <SelectItem value="1h">{t('monitor:traceMgr.hour1')}</SelectItem>
+            <SelectItem value="6h">{t('monitor:traceMgr.hour6')}</SelectItem>
+            <SelectItem value="24h">{t('monitor:traceMgr.hour24')}</SelectItem>
+            <SelectItem value="7d">{t('monitor:traceMgr.day7')}</SelectItem>
+          </SelectContent>
+        </Select>
+      </div>
       <div className="flex items-center gap-2">
         <Button variant="outline" className="dg-btn-secondary" onClick={fetchTraces}>
           <RefreshCw className="w-4 h-4 mr-2" />
@@ -353,251 +187,143 @@ const TraceManager: React.FC = () => {
     >
       {activeTab === 'traces' && (
         <Card>
-            <CardContent className="p-0">
-              <div className="overflow-x-auto">
-                <table className="w-full">
-                  <thead className="bg-muted/50">
+          <CardContent className="p-0">
+            <div className="overflow-x-auto">
+              <table className="w-full">
+                <thead className="bg-muted/50">
+                  <tr>
+                    <th className="px-4 py-3 text-left text-sm font-medium">Trace ID</th>
+                    <th className="px-4 py-3 text-left text-sm font-medium">{t('monitor:traceMgr.colServiceOperation')}</th>
+                    <th className="px-4 py-3 text-left text-sm font-medium">{t('monitor:traceStatus')}</th>
+                    <th className="px-4 py-3 text-left text-sm font-medium">{t('monitor:traceDuration')}</th>
+                    <th className="px-4 py-3 text-left text-sm font-medium">{t('monitor:traceMgr.spanCount')}</th>
+                    <th className="px-4 py-3 text-left text-sm font-medium">{t('common:createdAt')}</th>
+                    <th className="px-4 py-3 text-left text-sm font-medium">{t('common:actions')}</th>
+                  </tr>
+                </thead>
+                <tbody className="divide-y">
+                  {loading ? (
                     <tr>
-                      <th className="px-4 py-3 text-left text-sm font-medium">Trace ID</th>
-                      <th className="px-4 py-3 text-left text-sm font-medium">{t('monitor:traceMgr.colServiceOperation')}</th>
-                      <th className="px-4 py-3 text-left text-sm font-medium">{t('monitor:traceStatus')}</th>
-                      <th className="px-4 py-3 text-left text-sm font-medium">{t('monitor:traceDuration')}</th>
-                      <th className="px-4 py-3 text-left text-sm font-medium">{t('monitor:traceMgr.spanCount')}</th>
-                      <th className="px-4 py-3 text-left text-sm font-medium">{t('common:createdAt')}</th>
-                      <th className="px-4 py-3 text-left text-sm font-medium">{t('common:actions')}</th>
+                      <td colSpan={7} className="px-4 py-2"><PageLoading label={t('monitor:traceMgr.loadingTraces')} /></td>
                     </tr>
-                  </thead>
-                  <tbody className="divide-y">
-                    {loading ? (
-                      <tr>
-                        <td colSpan={7} className="px-4 py-2"><PageLoading label={t('monitor:traceMgr.loadingTraces')} /></td>
+                  ) : filteredTraces.length === 0 ? (
+                    <tr>
+                      <td colSpan={7} className="px-4 py-2"><PageEmpty title={t('monitor:traceMgr.noTraces')} className="py-8" /></td>
+                    </tr>
+                  ) : (
+                    filteredTraces.map((trace) => (
+                      <tr key={trace.id} className="hover:bg-muted/50">
+                        <td className="px-4 py-3">
+                          <span className="font-mono text-sm dg-text-blue">{trace.traceId.slice(0, 16)}...</span>
+                        </td>
+                        <td className="px-4 py-3">
+                          <div className="font-medium">{trace.operationName}</div>
+                          <div className="text-sm text-muted-foreground">{trace.serviceName}</div>
+                        </td>
+                        <td className="px-4 py-3">{getStatusBadge(trace.status, t)}</td>
+                        <td className="px-4 py-3 text-sm">{formatDuration(trace.duration)}</td>
+                        <td className="px-4 py-3 text-sm">{trace.spanCount}</td>
+                        <td className="px-4 py-3 text-sm text-muted-foreground">{trace.startTime}</td>
+                        <td className="px-4 py-3">
+                          <Button
+                            variant="ghost"
+                            size="sm"
+                            onClick={async () => {
+                              const spans = await fetchTraceDetail(trace.traceId);
+                              if (spans) {
+                                setSelectedTrace({ ...trace, spans });
+                                setTraceDetailOpen(true);
+                              }
+                            }}
+                          >
+                            <Eye className="w-4 h-4" />
+                          </Button>
+                        </td>
                       </tr>
-                    ) : filteredTraces.length === 0 ? (
-                      <tr>
-                        <td colSpan={7} className="px-4 py-2"><PageEmpty title={t('monitor:traceMgr.noTraces')} className="py-8" /></td>
-                      </tr>
-                    ) : (
-                      filteredTraces.map((trace) => (
-                        <tr key={trace.id} className="hover:bg-muted/50">
-                          <td className="px-4 py-3">
-                            <span className="font-mono text-sm dg-text-blue">{trace.traceId.slice(0, 16)}...</span>
-                          </td>
-                          <td className="px-4 py-3">
-                            <div className="font-medium">{trace.operationName}</div>
-                            <div className="text-sm text-muted-foreground">{trace.serviceName}</div>
-                          </td>
-                          <td className="px-4 py-3">{getStatusBadge(trace.status)}</td>
-                          <td className="px-4 py-3 text-sm">{formatDuration(trace.duration)}</td>
-                          <td className="px-4 py-3 text-sm">{trace.spanCount}</td>
-                          <td className="px-4 py-3 text-sm text-muted-foreground">{trace.startTime}</td>
-                          <td className="px-4 py-3">
-                            <Button
-                              variant="ghost"
-                              size="sm"
-                              onClick={async () => {
-                                const detail = await fetchTraceDetail(trace.traceId);
-                                if (detail) {
-                                  setSelectedTrace({ ...trace, spans: detail.spans });
-                                  setTraceDetailOpen(true);
-                                }
-                              }}
-                            >
-                              <Eye className="w-4 h-4" />
-                            </Button>
-                          </td>
-                        </tr>
-                      ))
-                    )}
-                  </tbody>
-                </table>
-              </div>
-            </CardContent>
-          </Card>
+                    ))
+                  )}
+                </tbody>
+              </table>
+            </div>
+          </CardContent>
+        </Card>
       )}
 
       {activeTab === 'services' && (
-          <Card>
-            <CardHeader>
-              <CardTitle>{t('monitor:traceMgr.servicePerfTitle')}</CardTitle>
-            </CardHeader>
-            <CardContent>
-              <div className="overflow-x-auto">
-                <table className="w-full">
-                  <thead className="bg-muted/50">
-                    <tr>
-                      <th className="px-4 py-3 text-left text-sm font-medium">{t('monitor:traceMgr.serviceName')}</th>
-                      <th className="px-4 py-3 text-left text-sm font-medium">{t('monitor:traceMgr.requestCount')}</th>
-                      <th className="px-4 py-3 text-left text-sm font-medium">{t('monitor:traceMgr.errorRate')}</th>
-                      <th className="px-4 py-3 text-left text-sm font-medium">{t('monitor:traceMgr.avgLatency')}</th>
-                      <th className="px-4 py-3 text-left text-sm font-medium">{t('monitor:traceMgr.p95Latency')}</th>
-                      <th className="px-4 py-3 text-left text-sm font-medium">{t('monitor:traceMgr.p99Latency')}</th>
+        <Card>
+          <CardHeader>
+            <CardTitle>{t('monitor:traceMgr.servicePerfTitle')}</CardTitle>
+          </CardHeader>
+          <CardContent>
+            <div className="overflow-x-auto">
+              <table className="w-full">
+                <thead className="bg-muted/50">
+                  <tr>
+                    <th className="px-4 py-3 text-left text-sm font-medium">{t('monitor:traceMgr.serviceName')}</th>
+                    <th className="px-4 py-3 text-left text-sm font-medium">{t('monitor:traceMgr.requestCount')}</th>
+                    <th className="px-4 py-3 text-left text-sm font-medium">{t('monitor:traceMgr.errorRate')}</th>
+                    <th className="px-4 py-3 text-left text-sm font-medium">{t('monitor:traceMgr.avgLatency')}</th>
+                    <th className="px-4 py-3 text-left text-sm font-medium">{t('monitor:traceMgr.p95Latency')}</th>
+                    <th className="px-4 py-3 text-left text-sm font-medium">{t('monitor:traceMgr.p99Latency')}</th>
+                  </tr>
+                </thead>
+                <tbody className="divide-y">
+                  {services.map((service) => (
+                    <tr key={service.serviceName} className="hover:bg-muted/50">
+                      <td className="px-4 py-3 font-medium">{service.serviceName}</td>
+                      <td className="px-4 py-3">{service.requestCount.toLocaleString()}</td>
+                      <td className="px-4 py-3">
+                        <span className={service.errorRate > 1 ? 'text-red-500' : 'dg-text-green'}>
+                          {service.errorRate.toFixed(2)}%
+                        </span>
+                      </td>
+                      <td className="px-4 py-3">{formatDuration(service.avgDuration)}</td>
+                      <td className="px-4 py-3">{formatDuration(service.p95Duration)}</td>
+                      <td className="px-4 py-3">{formatDuration(service.p99Duration)}</td>
                     </tr>
-                  </thead>
-                  <tbody className="divide-y">
-                    {services.map((service) => (
-                      <tr key={service.serviceName} className="hover:bg-muted/50">
-                        <td className="px-4 py-3 font-medium">{service.serviceName}</td>
-                        <td className="px-4 py-3">{service.requestCount.toLocaleString()}</td>
-                        <td className="px-4 py-3">
-                          <span className={service.errorRate > 1 ? 'text-red-500' : 'dg-text-green'}>
-                            {service.errorRate.toFixed(2)}%
-                          </span>
-                        </td>
-                        <td className="px-4 py-3">{formatDuration(service.avgDuration)}</td>
-                        <td className="px-4 py-3">{formatDuration(service.p95Duration)}</td>
-                        <td className="px-4 py-3">{formatDuration(service.p99Duration)}</td>
-                      </tr>
-                    ))}
-                  </tbody>
-                </table>
-              </div>
-            </CardContent>
-          </Card>
+                  ))}
+                </tbody>
+              </table>
+            </div>
+          </CardContent>
+        </Card>
       )}
 
       {activeTab === 'metrics' && (
-          <div className="grid grid-cols-2 gap-4">
-            <Card>
-              <CardHeader>
-                <CardTitle>{t('monitor:traceMgr.latencyDist')}</CardTitle>
-              </CardHeader>
-              <CardContent className="h-[300px] flex items-center justify-center text-muted-foreground">
-                <BarChart3 className="w-16 h-16 mr-4" />
-                {t('monitor:traceMgr.latencyDistChart')}
-              </CardContent>
-            </Card>
-            <Card>
-              <CardHeader>
-                <CardTitle>{t('monitor:traceMgr.errorTrend')}</CardTitle>
-              </CardHeader>
-              <CardContent className="h-[300px] flex items-center justify-center text-muted-foreground">
-                <TrendingUp className="w-16 h-16 mr-4" />
-                {t('monitor:traceMgr.errorTrendChart')}
-              </CardContent>
-            </Card>
-          </div>
+        <div className="grid grid-cols-2 gap-4">
+          <Card>
+            <CardHeader>
+              <CardTitle>{t('monitor:traceMgr.latencyDist')}</CardTitle>
+            </CardHeader>
+            <CardContent className="h-[300px] flex items-center justify-center text-muted-foreground">
+              <BarChart3 className="w-16 h-16 mr-4" />
+              {t('monitor:traceMgr.latencyDistChart')}
+            </CardContent>
+          </Card>
+          <Card>
+            <CardHeader>
+              <CardTitle>{t('monitor:traceMgr.errorTrend')}</CardTitle>
+            </CardHeader>
+            <CardContent className="h-[300px] flex items-center justify-center text-muted-foreground">
+              <TrendingUp className="w-16 h-16 mr-4" />
+              {t('monitor:traceMgr.errorTrendChart')}
+            </CardContent>
+          </Card>
+        </div>
       )}
 
-      {/* Trace详情对话框 */}
-      <Dialog open={traceDetailOpen} onOpenChange={setTraceDetailOpen}>
-        <DialogContent className="max-w-6xl max-h-[90vh]">
-          <DialogHeader>
-            <DialogTitle className="flex items-center gap-2">
-              <GitBranch className="w-5 h-5" />
-              {t('monitor:traceMgr.traceDetailTitle')}
-              <span className="font-mono text-sm text-muted-foreground">{selectedTrace?.traceId}</span>
-            </DialogTitle>
-            <DialogDescription className="sr-only">{t('common:description')}</DialogDescription>
-          </DialogHeader>
-          {selectedTrace && (
-            <div className="space-y-4">
-              <div className="flex items-center gap-4 p-3 bg-muted rounded-lg">
-                <div>
-                  <Label className="text-xs text-muted-foreground">{t('monitor:traceService')}</Label>
-                  <p className="font-medium">{selectedTrace.serviceName}</p>
-                </div>
-                <Separator orientation="vertical" className="h-8" />
-                <div>
-                  <Label className="text-xs text-muted-foreground">{t('monitor:traceOperation')}</Label>
-                  <p className="font-medium">{selectedTrace.operationName}</p>
-                </div>
-                <Separator orientation="vertical" className="h-8" />
-                <div>
-                  <Label className="text-xs text-muted-foreground">{t('monitor:traceMgr.totalDuration')}</Label>
-                  <p className="font-medium">{formatDuration(selectedTrace.duration)}</p>
-                </div>
-                <Separator orientation="vertical" className="h-8" />
-                <div>
-                  <Label className="text-xs text-muted-foreground">{t('monitor:traceStatus')}</Label>
-                  <p>{getStatusBadge(selectedTrace.status)}</p>
-                </div>
-              </div>
-              
-              <ScrollArea className="h-[500px]">
-                <div className="border rounded-lg">
-                  <div className="flex items-center px-4 py-2 bg-muted/50 border-b text-sm font-medium">
-                    <span className="flex-1">{t('monitor:traceMgr.spanName')}</span>
-                    <span className="w-32">{t('monitor:traceTimeline')}</span>
-                    <span className="w-20 text-right">{t('monitor:traceDuration')}</span>
-                  </div>
-                  {/* Span树渲染 */}
-                  {(selectedTrace as JsonData).spans && buildSpanTree((selectedTrace as JsonData).spans).map(span => (
-                    <SpanTreeNode key={span.spanId} span={span} level={0} totalDuration={selectedTrace.duration} />
-                  ))}
-                </div>
-              </ScrollArea>
-            </div>
-          )}
-        </DialogContent>
-      </Dialog>
+      <TraceDetailDialog
+        open={traceDetailOpen}
+        onOpenChange={setTraceDetailOpen}
+        selectedTrace={selectedTrace}
+        onSelectSpan={handleSelectSpan}
+      />
 
-      {/* Span详情对话框 */}
-      <Dialog open={spanDetailOpen} onOpenChange={setSpanDetailOpen}>
-        <DialogContent className="max-w-2xl">
-          <DialogHeader>
-            <DialogTitle>{t('monitor:traceMgr.spanDetailTitle')}</DialogTitle>
-            <DialogDescription className="sr-only">{t('common:description')}</DialogDescription>
-          </DialogHeader>
-          {selectedSpan && (
-            <div className="space-y-4">
-              <div className="grid grid-cols-2 gap-4">
-                <div>
-                  <Label className="text-muted-foreground">Span ID</Label>
-                  <p className="font-mono text-sm">{selectedSpan.spanId}</p>
-                </div>
-                <div>
-                  <Label className="text-muted-foreground">{t('common:type')}</Label>
-                  <p className="capitalize">{selectedSpan.kind}</p>
-                </div>
-                <div>
-                  <Label className="text-muted-foreground">{t('monitor:traceService')}</Label>
-                  <p className="font-medium">{selectedSpan.serviceName}</p>
-                </div>
-                <div>
-                  <Label className="text-muted-foreground">{t('monitor:traceOperation')}</Label>
-                  <p className="font-medium">{selectedSpan.operationName}</p>
-                </div>
-                <div>
-                  <Label className="text-muted-foreground">{t('monitor:traceStatus')}</Label>
-                  <p>{getStatusBadge(selectedSpan.status)}</p>
-                </div>
-                <div>
-                  <Label className="text-muted-foreground">{t('monitor:traceDuration')}</Label>
-                  <p className="font-medium">{formatDuration(selectedSpan.duration)}</p>
-                </div>
-              </div>
-              
-              {Object.keys(selectedSpan.tags).length > 0 && (
-                <div>
-                  <Label className="text-muted-foreground">{t('monitor:alertLabels')}</Label>
-                  <div className="mt-1 p-3 bg-muted rounded-lg">
-                    {Object.entries(selectedSpan.tags).map(([k, v]) => (
-                      <div key={k} className="flex justify-between text-sm py-1">
-                        <span className="text-muted-foreground">{k}</span>
-                        <span className="font-mono">{v}</span>
-                      </div>
-                    ))}
-                  </div>
-                </div>
-              )}
-              
-              {selectedSpan.logs?.length > 0 && (
-                <div>
-                  <Label className="text-muted-foreground">{t('monitor:traceMgr.logs')}</Label>
-                  <div className="mt-1 space-y-2">
-                    {selectedSpan.logs.map((log, idx) => (
-                      <div key={idx} className="p-2 bg-muted rounded text-sm">
-                        <span className="text-muted-foreground">{log.timestamp}</span>
-                        <pre className="mt-1 text-xs">{JSON.stringify(log.fields, null, 2)}</pre>
-                      </div>
-                    ))}
-                  </div>
-                </div>
-              )}
-            </div>
-          )}
-        </DialogContent>
-      </Dialog>
+      <SpanDetailDialog
+        open={spanDetailOpen}
+        onOpenChange={setSpanDetailOpen}
+        selectedSpan={selectedSpan}
+      />
     </PageShell>
   );
 };

frontend/src/components/monitor/trace/trace-manager/SpanDetailDialog.tsx

@@ -0,0 +1,91 @@
+/**
+ * Span 详情弹窗 — 基本信息 + 标签 + 日志
+ */
+import { useTranslation } from 'react-i18next';
+import {
+  Dialog, DialogContent, DialogHeader, DialogTitle, DialogDescription,
+} from '@/components/ui/dialog';
+import { Label } from '@/components/ui/label';
+import { getStatusBadge } from './trace-helpers';
+import { formatDuration, type Span } from './types';
+
+interface SpanDetailDialogProps {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+  selectedSpan: Span | null;
+}
+
+const SpanDetailDialog = ({ open, onOpenChange, selectedSpan }: SpanDetailDialogProps) => {
+  const { t } = useTranslation(['monitor', 'common']);
+
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="max-w-2xl">
+        <DialogHeader>
+          <DialogTitle>{t('monitor:traceMgr.spanDetailTitle')}</DialogTitle>
+          <DialogDescription className="sr-only">{t('common:description')}</DialogDescription>
+        </DialogHeader>
+        {selectedSpan && (
+          <div className="space-y-4">
+            <div className="grid grid-cols-2 gap-4">
+              <div>
+                <Label className="text-muted-foreground">Span ID</Label>
+                <p className="font-mono text-sm">{selectedSpan.spanId}</p>
+              </div>
+              <div>
+                <Label className="text-muted-foreground">{t('common:type')}</Label>
+                <p className="capitalize">{selectedSpan.kind}</p>
+              </div>
+              <div>
+                <Label className="text-muted-foreground">{t('monitor:traceService')}</Label>
+                <p className="font-medium">{selectedSpan.serviceName}</p>
+              </div>
+              <div>
+                <Label className="text-muted-foreground">{t('monitor:traceOperation')}</Label>
+                <p className="font-medium">{selectedSpan.operationName}</p>
+              </div>
+              <div>
+                <Label className="text-muted-foreground">{t('monitor:traceStatus')}</Label>
+                <p>{getStatusBadge(selectedSpan.status, t)}</p>
+              </div>
+              <div>
+                <Label className="text-muted-foreground">{t('monitor:traceDuration')}</Label>
+                <p className="font-medium">{formatDuration(selectedSpan.duration)}</p>
+              </div>
+            </div>
+
+            {Object.keys(selectedSpan.tags).length > 0 && (
+              <div>
+                <Label className="text-muted-foreground">{t('monitor:alertLabels')}</Label>
+                <div className="mt-1 p-3 bg-muted rounded-lg">
+                  {Object.entries(selectedSpan.tags).map(([k, v]) => (
+                    <div key={k} className="flex justify-between text-sm py-1">
+                      <span className="text-muted-foreground">{k}</span>
+                      <span className="font-mono">{v}</span>
+                    </div>
+                  ))}
+                </div>
+              </div>
+            )}
+
+            {selectedSpan.logs?.length > 0 && (
+              <div>
+                <Label className="text-muted-foreground">{t('monitor:traceMgr.logs')}</Label>
+                <div className="mt-1 space-y-2">
+                  {selectedSpan.logs.map((log, idx) => (
+                    <div key={idx} className="p-2 bg-muted rounded text-sm">
+                      <span className="text-muted-foreground">{log.timestamp}</span>
+                      <pre className="mt-1 text-xs">{JSON.stringify(log.fields, null, 2)}</pre>
+                    </div>
+                  ))}
+                </div>
+              </div>
+            )}
+          </div>
+        )}
+      </DialogContent>
+    </Dialog>
+  );
+};
+
+export default SpanDetailDialog;

frontend/src/components/monitor/trace/trace-manager/SpanTreeNode.tsx

@@ -0,0 +1,71 @@
+/**
+ * Span 树递归节点组件
+ *
+ * 从 TraceManager 主组件内联定义提取为独立组件。
+ * 原内联定义在每次父组件 render 时都会重新创建组件函数（性能损耗），
+ * 提取后变为稳定引用，避免不必要的子树重渲染。
+ */
+import React, { useState } from 'react';
+import { ChevronDown, ChevronRight, AlertCircle } from 'lucide-react';
+import { Button } from '@/components/ui/button';
+import { getKindIcon } from './trace-helpers';
+import { getStatusColor, formatDuration, type Span } from './types';
+
+interface SpanTreeNodeProps {
+  span: Span;
+  level: number;
+  totalDuration: number;
+  onSelectSpan: (span: Span) => void;
+}
+
+const SpanTreeNode: React.FC<SpanTreeNodeProps> = ({ span, level, totalDuration, onSelectSpan }) => {
+  const [expanded, setExpanded] = useState(true);
+  const widthPercent = totalDuration > 0 ? (span.duration / totalDuration) * 100 : 0;
+
+  return (
+    <div className="select-none">
+      <div
+        className="flex items-center py-2 hover:bg-muted/50 cursor-pointer border-l-2 border-transparent hover:border-blue-500"
+        style={{ paddingLeft: `${level * 24 + 12}px` }}
+        onClick={() => { onSelectSpan(span); }}
+      >
+        {span.children?.length > 0 && (
+          <Button
+            variant="ghost"
+            size="sm"
+            className="h-4 w-4 p-0 mr-1"
+            onClick={(e) => { e.stopPropagation(); setExpanded(!expanded); }}
+          >
+            {expanded ? <ChevronDown className="w-3 h-3" /> : <ChevronRight className="w-3 h-3" />}
+          </Button>
+        )}
+        {!span.children?.length && <span className="w-5" />}
+
+        <div className="flex items-center gap-2 flex-1 min-w-0">
+          {getKindIcon(span.kind)}
+          <span className="font-medium truncate">{span.operationName}</span>
+          <span className="text-xs text-muted-foreground">{span.serviceName}</span>
+        </div>
+
+        <div className="flex items-center gap-4">
+          <div className="w-32 h-4 bg-muted rounded overflow-hidden">
+            <div
+              className={`h-full ${getStatusColor(span.status)}`}
+              style={{ width: `${Math.max(widthPercent, 1)}%` }}
+            />
+          </div>
+          <span className="text-sm text-muted-foreground w-20 text-right">
+            {formatDuration(span.duration)}
+          </span>
+          {span.status === 'error' && <AlertCircle className="w-4 h-4 text-red-500" />}
+        </div>
+      </div>
+
+      {expanded && span.children?.map((child) => (
+        <SpanTreeNode key={child.spanId} span={child} level={level + 1} totalDuration={totalDuration} onSelectSpan={onSelectSpan} />
+      ))}
+    </div>
+  );
+};
+
+export default SpanTreeNode;

frontend/src/components/monitor/trace/trace-manager/TraceDetailDialog.tsx

@@ -0,0 +1,80 @@
+/**
+ * Trace 详情弹窗 — Span 树可视化
+ */
+import { useTranslation } from 'react-i18next';
+import { GitBranch } from 'lucide-react';
+import {
+  Dialog, DialogContent, DialogHeader, DialogTitle, DialogDescription,
+} from '@/components/ui/dialog';
+import { Label } from '@/components/ui/label';
+import { Separator } from '@/components/ui/separator';
+import { ScrollArea } from '@/components/ui/scroll-area';
+import { getStatusBadge } from './trace-helpers';
+import { formatDuration, buildSpanTree, type Trace, type Span } from './types';
+import SpanTreeNode from './SpanTreeNode';
+
+interface TraceDetailDialogProps {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+  selectedTrace: Trace | null;
+  onSelectSpan: (span: Span) => void;
+}
+
+const TraceDetailDialog = ({ open, onOpenChange, selectedTrace, onSelectSpan }: TraceDetailDialogProps) => {
+  const { t } = useTranslation(['monitor', 'common']);
+
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="max-w-6xl max-h-[90vh]">
+        <DialogHeader>
+          <DialogTitle className="flex items-center gap-2">
+            <GitBranch className="w-5 h-5" />
+            {t('monitor:traceMgr.traceDetailTitle')}
+            <span className="font-mono text-sm text-muted-foreground">{selectedTrace?.traceId}</span>
+          </DialogTitle>
+          <DialogDescription className="sr-only">{t('common:description')}</DialogDescription>
+        </DialogHeader>
+        {selectedTrace && (
+          <div className="space-y-4">
+            <div className="flex items-center gap-4 p-3 bg-muted rounded-lg">
+              <div>
+                <Label className="text-xs text-muted-foreground">{t('monitor:traceService')}</Label>
+                <p className="font-medium">{selectedTrace.serviceName}</p>
+              </div>
+              <Separator orientation="vertical" className="h-8" />
+              <div>
+                <Label className="text-xs text-muted-foreground">{t('monitor:traceOperation')}</Label>
+                <p className="font-medium">{selectedTrace.operationName}</p>
+              </div>
+              <Separator orientation="vertical" className="h-8" />
+              <div>
+                <Label className="text-xs text-muted-foreground">{t('monitor:traceMgr.totalDuration')}</Label>
+                <p className="font-medium">{formatDuration(selectedTrace.duration)}</p>
+              </div>
+              <Separator orientation="vertical" className="h-8" />
+              <div>
+                <Label className="text-xs text-muted-foreground">{t('monitor:traceStatus')}</Label>
+                <p>{getStatusBadge(selectedTrace.status, t)}</p>
+              </div>
+            </div>
+
+            <ScrollArea className="h-[500px]">
+              <div className="border rounded-lg">
+                <div className="flex items-center px-4 py-2 bg-muted/50 border-b text-sm font-medium">
+                  <span className="flex-1">{t('monitor:traceMgr.spanName')}</span>
+                  <span className="w-32">{t('monitor:traceTimeline')}</span>
+                  <span className="w-20 text-right">{t('monitor:traceDuration')}</span>
+                </div>
+                {selectedTrace.spans && buildSpanTree(selectedTrace.spans).map((span) => (
+                  <SpanTreeNode key={span.spanId} span={span} level={0} totalDuration={selectedTrace.duration} onSelectSpan={onSelectSpan} />
+                ))}
+              </div>
+            </ScrollArea>
+          </div>
+        )}
+      </DialogContent>
+    </Dialog>
+  );
+};
+
+export default TraceDetailDialog;

frontend/src/components/monitor/trace/trace-manager/trace-helpers.tsx

@@ -0,0 +1,44 @@
+/**
+ * TraceManager 共享 JSX 辅助组件
+ *
+ * getStatusBadge — Trace/Span 状态徽章
+ * getKindIcon — Span kind 图标
+ */
+import type { ReactNode } from 'react';
+import { Badge } from '@/components/ui/badge';
+import {
+  CheckCircle,
+  XCircle,
+  Clock,
+  ArrowRight,
+  Server,
+  Zap,
+  Box,
+  Code,
+} from 'lucide-react';
+import type { TFunction } from 'i18next';
+
+/** Trace/Span 状态徽章 */
+export function getStatusBadge(status: string, t: TFunction): ReactNode {
+  switch (status) {
+    case 'success':
+      return <Badge variant="default" className="bg-green-500 gap-1"><CheckCircle className="w-3 h-3" />{t('common:success')}</Badge>;
+    case 'error':
+      return <Badge variant="destructive" className="gap-1"><XCircle className="w-3 h-3" />{t('monitor:traceError')}</Badge>;
+    case 'pending':
+      return <Badge variant="outline" className="gap-1"><Clock className="w-3 h-3" />{t('monitor:traceMgr.inProgress')}</Badge>;
+    default:
+      return <Badge variant="secondary">{t('common:unknown')}</Badge>;
+  }
+}
+
+/** Span kind 图标 */
+export function getKindIcon(kind: string): ReactNode {
+  switch (kind) {
+    case 'client': return <ArrowRight className="w-4 h-4" />;
+    case 'server': return <Server className="w-4 h-4" />;
+    case 'producer': return <Zap className="w-4 h-4" />;
+    case 'consumer': return <Box className="w-4 h-4" />;
+    default: return <Code className="w-4 h-4" />;
+  }
+}

frontend/src/components/monitor/trace/trace-manager/types.ts

@@ -0,0 +1,90 @@
+/**
+ * TraceManager 类型定义 + 纯工具函数
+ *
+ * 从 TraceManager.tsx(605行) 提取，避免主组件过大。
+ * 所有函数均为纯函数（输入 → 输出，无副作用）。
+ */
+
+export interface Trace {
+  id: string;
+  traceId: string;
+  serviceName: string;
+  operationName: string;
+  startTime: string;
+  duration: number;
+  status: 'success' | 'error' | 'pending';
+  spanCount: number;
+  tags: Record<string, string>;
+  spans?: Span[];
+}
+
+export interface Span {
+  id: string;
+  spanId: string;
+  parentSpanId?: string;
+  serviceName: string;
+  operationName: string;
+  startTime: string;
+  duration: number;
+  status: 'success' | 'error' | 'pending';
+  kind: 'client' | 'server' | 'producer' | 'consumer' | 'internal';
+  tags: Record<string, string>;
+  logs: SpanLog[];
+  children: Span[];
+}
+
+export interface SpanLog {
+  timestamp: string;
+  fields: Record<string, string>;
+}
+
+export interface ServiceMetrics {
+  serviceName: string;
+  requestCount: number;
+  errorRate: number;
+  avgDuration: number;
+  p95Duration: number;
+  p99Duration: number;
+}
+
+// ============ 纯工具函数 ============
+
+/** 格式化耗时（μs/ms/s） */
+export function formatDuration(ms: number): string {
+  if (ms < 1) return `${(ms * 1000).toFixed(2)}μs`;
+  if (ms < 1000) return `${ms.toFixed(2)}ms`;
+  return `${(ms / 1000).toFixed(2)}s`;
+}
+
+/** Span 状态对应的背景色 class */
+export function getStatusColor(status: string): string {
+  switch (status) {
+    case 'success': return 'bg-green-500';
+    case 'error': return 'bg-red-500';
+    case 'pending': return 'bg-yellow-500';
+    default: return 'bg-[var(--dg-bg-active)]';
+  }
+}
+
+/** 构建 Span 树（按 parentSpanId 组织层级） */
+export function buildSpanTree(spans: Span[]): Span[] {
+  const spanMap = new Map<string, Span>();
+  const roots: Span[] = [];
+
+  spans.forEach((span) => {
+    spanMap.set(span.spanId, { ...span, children: [] });
+  });
+
+  spans.forEach((span) => {
+    const node = spanMap.get(span.spanId)!;
+    if (span.parentSpanId && spanMap.has(span.parentSpanId)) {
+      const parent = spanMap.get(span.parentSpanId)!;
+      parent.children = parent.children || [];
+      parent.children.push(node);
+    } else {
+      roots.push(node);
+    }
+  });
+
+  return roots;
+}