refactor: 重构消息区域模块化架构

- 将 messageArea.ts 拆分为多个独立模块
   - 新增 messageRenderer.ts：消息渲染逻辑
   - 新增 messageStyles.ts：样式定义
   - 新增 questionHandler.ts：问题处理
   - 新增 segmentRenderer.ts：分段渲染
   - 新增 textFormatter.ts：文本格式化
   - 新增 toolHelpers.ts：工具辅助函数

src/views/toolHelpers.ts

@@ -0,0 +1,106 @@
+/**
+ * 工具辅助函数模块
+ * 功能：工具图标、名称映射、VCD 路径解析
+ * 依赖：toolIcons
+ * 使用场景：工具调用显示
+ */
+
+import {
+  fileWriteIconSvg,
+  fileReadIconSvg,
+  fileDeleteIconSvg,
+  syntaxCheckIconSvg,
+  SearchCode,
+  saveKnowledgeIconSvg,
+  simulationIconSvg,
+  waveformIconSvg,
+  knowledgeLoadIconSvg,
+  stateTransitionIconSvg,
+  userQuestionIconSvg,
+  updateStageIconSvg,
+  successIconSvg,
+} from "../constants/toolIcons";
+
+export function getToolIcon(toolName: string): string {
+  const iconMap: Record<string, string> = {
+    file_read: fileReadIconSvg,
+    file_write: fileWriteIconSvg,
+    file_delete: fileDeleteIconSvg,
+    file_list: SearchCode,
+    syntax_check: syntaxCheckIconSvg,
+    simulation: simulationIconSvg,
+    waveform_summary: waveformIconSvg,
+    knowledge_save: saveKnowledgeIconSvg,
+    knowledge_load: knowledgeLoadIconSvg,
+    queryKnowledgeSummary: knowledgeLoadIconSvg,
+    queryRules: knowledgeLoadIconSvg,
+    setModule: fileWriteIconSvg,
+    addSignal: fileWriteIconSvg,
+    addSignalExample: fileWriteIconSvg,
+    validateKnowledgeGraph: syntaxCheckIconSvg,
+    querySignals: SearchCode,
+    addPlan: fileWriteIconSvg,
+    addEdge: fileWriteIconSvg,
+    showPlan: SearchCode,
+    addRule: fileWriteIconSvg,
+    updateNode: fileWriteIconSvg,
+    addStateTransition: stateTransitionIconSvg,
+    askUser: userQuestionIconSvg,
+    updatePhase: updateStageIconSvg,
+    iverilog: successIconSvg,
+  };
+  return iconMap[toolName] || "";
+}
+
+export function getToolDisplayName(toolName: string): string {
+  const toolNameMap: Record<string, string> = {
+    file_read: "已完成文件读取",
+    file_write: "已完成文件写入",
+    file_delete: "已完成文件删除",
+    file_list: "已检索代码文件",
+    syntax_check: "已完成语法检查",
+    simulation: "已完成仿真",
+    waveform_summary: "已完成波形分析",
+    knowledge_save: "已保存知识库",
+    knowledge_load: "已加载知识库",
+    queryKnowledgeSummary: "已查询知识摘要",
+    queryRules: "已查询规则",
+    setModule: "已设置模块",
+    addSignal: "信号分析完成",
+    addSignalExample: "信号示例处理完成",
+    validateKnowledgeGraph: "已验证知识图谱",
+    querySignals: "已查询信号",
+    addPlan: "已添加计划",
+    addEdge: "已添加边",
+    showPlan: "已显示计划",
+    addRule: "已添加规则",
+    updateNode: "已更新节点",
+    addStateTransition: "已添加状态转换",
+    spawnExplorer: "代码探索",
+    spawnDebugger: "波形调试",
+    askUser: "用户提问",
+    updatePhase: "已更新阶段",
+    iverilog: "已完成编译",
+  };
+  return toolNameMap[toolName] || toolName;
+}
+
+export function parseMultiVcdPaths(toolResult: string): Array<{ name: string; path: string }> {
+  if (!toolResult) return [];
+  const result = String(toolResult);
+
+  const vcdListMatch = result.match(/VCD 文件列表:[\s\S]*?(?=\n\n|$)/);
+  if (!vcdListMatch) return [];
+
+  const paths: Array<{ name: string; path: string }> = [];
+  const lineRegex = /- (\w+): ([^\n]+)/g;
+  let match;
+  while ((match = lineRegex.exec(vcdListMatch[0])) !== null) {
+    const name = match[1];
+    const pathOrError = match[2].trim();
+    if (!pathOrError.startsWith("失败")) {
+      paths.push({ name: name + ".vcd", path: pathOrError });
+    }
+  }
+  return paths;
+}