feat:代码变更diff可视化功能实现

.npmrc

@@ -1 +1,3 @@
 enable-pre-post-scripts = true
+shamefully-hoist = true
+public-hoist-pattern[] = *

docs/code-changes-feature.md

@@ -0,0 +1,45 @@
+# 代码变更审查功能
+
+## 功能概述
+
+AI 修改文件后，会在输入框上方显示"代码变更"面板，用户可以查看所有修改并选择采纳或拒绝。
+
+## 核心文件
+
+### 1. 数据结构
+- `src/types/fileChanges.ts` - 变更数据类型定义
+
+### 2. 服务层
+- `src/services/changeTracker.ts` - 变更追踪服务（单例）
+  - `trackChange()` - 记录文件变更
+  - `acceptChange()` - 采纳变更（保存文件）
+  - `rejectChange()` - 拒绝变更（恢复旧内容）
+
+### 3. UI 组件
+- `src/views/changePanel.ts` - 变更面板 UI
+- `src/utils/diffRenderer.ts` - Diff 可视化渲染
+
+### 4. 集成点
+- `src/utils/messageHandler.ts` - 消息处理
+  - `trackFileChange()` - 记录变更
+  - `handleAcceptChange()` - 处理采纳
+  - `handleRejectChange()` - 处理拒绝
+  - `sendChangesToWebview()` - 发送变更到前端
+
+- `src/services/toolExecutor.ts` - 工具执行器
+  - 在 `executeFileWrite()` 中记录变更
+
+## 使用流程
+
+1. **开始对话** - 调用 `startChangeSession(sessionId)`
+2. **修改文件** - 自动调用 `trackFileChange()`
+3. **对话结束** - 调用 `sendChangesToWebview()` 显示变更面板
+4. **用户操作** - 点击采纳/拒绝按钮
+5. **处理结果** - 保存或恢复文件内容
+
+## 待完成工作
+
+1. 在 ICHelperPanel 中集成消息处理（监听 acceptChange/rejectChange 命令）
+2. 在对话结束时调用 `sendChangesToWebview()`
+3. 在 Webview 中实现变更列表的动态渲染
+4. 处理前端的采纳/拒绝响应

docs/integration-guide.md

@@ -0,0 +1,50 @@
+# 代码变更审查功能 - 使用说明
+
+## 功能说明
+
+AI 修改文件后，会在输入框上方显示"代码变更"面板，用户可以：
+- 查看所有修改的文件列表
+- 点击文件查看 diff 对比
+- 采纳变更（保存文件）
+- 拒绝变更（恢复旧内容）
+
+## 已完成的集成
+
+### 1. 后端集成
+- ✅ 在 `ICHelperPanel.ts` 中添加了消息监听（acceptChange/rejectChange）
+- ✅ 在发送消息时启动变更追踪会话
+- ✅ 在文件操作时自动记录变更（messageHandler.ts、toolExecutor.ts）
+
+### 2. 前端集成
+- ✅ 在 `webviewContent.ts` 中添加了消息处理（showChanges/changeAccepted/changeRejected）
+- ✅ 在 `changePanel.ts` 中实现了完整的 UI 交互逻辑
+
+### 3. 核心功能
+- ✅ 变更追踪服务（changeTracker.ts）
+- ✅ Diff 可视化渲染（diffRenderer.ts）
+- ✅ 采纳/拒绝变更逻辑
+
+## 待完成工作
+
+需要在对话结束时调用 `sendChangesToWebview(panel)` 来显示变更面板。
+
+建议在以下位置添加：
+1. 在 `handleUserMessage` 函数中，对话流结束时
+2. 或在 `dialogManager` 的对话完成回调中
+
+示例代码：
+```typescript
+// 对话结束时
+import { sendChangesToWebview } from '../utils/messageHandler';
+
+// 在对话完成的地方调用
+sendChangesToWebview(panel);
+```
+
+## 测试步骤
+
+1. 启动插件（F5）
+2. 发送消息让 AI 修改文件
+3. 对话结束后，输入框上方应显示"代码变更"面板
+4. 点击文件查看 diff
+5. 点击"采纳"或"拒绝"按钮测试功能

src/panels/ICHelperPanel.ts

@@ -13,6 +13,10 @@ import {
   handlePlanAction,
   getCurrentTaskId,
   setLastTaskId,
+  handleAcceptChange,
+  handleRejectChange,
+  startChangeSession,
+  handleOpenFileDiff,
 } from "../utils/messageHandler";
 import { compactDialog } from "../services/apiClient";
 import { VCDViewerPanel } from "./VCDViewerPanel";
@@ -344,6 +348,10 @@ export async function showICHelperPanel(
           // 切换到当前面板的任务上下文
           historyManager.switchToPanelTask(panelId);
 
+          // 启动变更追踪会话
+          const sessionId = `session_${panelId}_${Date.now()}`;
+          startChangeSession(sessionId);
+
           // 显示进度条
           panel.webview.postMessage({ type: "showProgress" });
 
@@ -476,6 +484,24 @@ export async function showICHelperPanel(
           // 退出登录
           vscode.commands.executeCommand("ic-coder.logout");
           break;
+        case "acceptChange":
+          // 采纳变更
+          if (message.changeId) {
+            await handleAcceptChange(panel, message.changeId);
+          }
+          break;
+        case "rejectChange":
+          // 拒绝变更
+          if (message.changeId) {
+            await handleRejectChange(panel, message.changeId);
+          }
+          break;
+        case "openFileDiff":
+          // 打开文件 diff
+          if (message.changeId) {
+            await handleOpenFileDiff(panel, message.changeId);
+          }
+          break;
         case "checkInvitationCode":
           // 检查邀请码验证状态
           {

src/services/changeTracker.ts

@@ -0,0 +1,196 @@
+/**
+ * 文件变更追踪服务
+ * 功能：收集和管理 AI 修改文件的变更记录
+ * 依赖：types/fileChanges
+ * 使用场景：在文件操作时记录变更，供用户审查
+ */
+
+import { FileChange, ChangeSession } from '../types/fileChanges';
+import * as vscode from 'vscode';
+import * as fs from 'fs';
+import * as path from 'path';
+
+class ChangeTrackerService {
+  private currentSession: ChangeSession | null = null;
+  private changeListeners: Array<(session: ChangeSession) => void> = [];
+
+  /**
+   * 开始新的变更会话
+   */
+  startSession(sessionId: string): void {
+    this.currentSession = {
+      sessionId,
+      startTime: Date.now(),
+      changes: [],
+      status: 'active'
+    };
+  }
+
+  /**
+   * 记录文件变更
+   */
+  trackChange(filePath: string, oldContent: string, newContent: string): string {
+    if (!this.currentSession) {
+      this.startSession(`session_${Date.now()}`);
+    }
+
+    const changeId = `change_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`;
+
+    // 判断变更类型
+    let changeType: 'create' | 'modify' | 'delete';
+    if (oldContent === '' && newContent !== '') {
+      changeType = 'create';
+    } else if (oldContent !== '' && newContent === '') {
+      changeType = 'delete';
+    } else {
+      changeType = 'modify';
+    }
+
+    const change: FileChange = {
+      filePath,
+      oldContent,
+      newContent,
+      timestamp: Date.now(),
+      changeType,
+      changeId
+    };
+
+    this.currentSession!.changes.push(change);
+    this.notifyListeners();
+
+    return changeId;
+  }
+
+  /**
+   * 结束当前会话
+   */
+  endSession(): ChangeSession | null {
+    if (this.currentSession && this.currentSession.changes.length > 0) {
+      this.currentSession.status = 'completed';
+      const session = this.currentSession;
+      this.notifyListeners();
+      return session;
+    }
+    this.currentSession = null;
+    return null;
+  }
+
+  /**
+   * 获取当前会话
+   */
+  getCurrentSession(): ChangeSession | null {
+    return this.currentSession;
+  }
+
+  /**
+   * 清空当前会话
+   */
+  clearSession(): void {
+    this.currentSession = null;
+    this.notifyListeners();
+  }
+
+  /**
+   * 移除指定的变更
+   */
+  removeChange(changeId: string): boolean {
+    if (!this.currentSession) {
+      return false;
+    }
+
+    const index = this.currentSession.changes.findIndex(c => c.changeId === changeId);
+    if (index !== -1) {
+      this.currentSession.changes.splice(index, 1);
+      this.notifyListeners();
+      return true;
+    }
+    return false;
+  }
+
+  /**
+   * 监听变更
+   */
+  onChangeUpdate(listener: (session: ChangeSession) => void): void {
+    this.changeListeners.push(listener);
+  }
+
+  /**
+   * 通知所有监听器
+   */
+  private notifyListeners(): void {
+    if (this.currentSession) {
+      this.changeListeners.forEach(listener => listener(this.currentSession!));
+    }
+  }
+
+  /**
+   * 采纳变更（保存文件）
+   */
+  async acceptChange(changeId: string): Promise<boolean> {
+    if (!this.currentSession) {
+      return false;
+    }
+
+    const change = this.currentSession.changes.find(c => c.changeId === changeId);
+    if (!change) {
+      return false;
+    }
+
+    try {
+      const workspaceFolder = vscode.workspace.workspaceFolders?.[0];
+      if (!workspaceFolder) {
+        return false;
+      }
+
+      const absolutePath = path.join(workspaceFolder.uri.fsPath, change.filePath);
+      await fs.promises.writeFile(absolutePath, change.newContent, 'utf-8');
+
+      this.removeChange(changeId);
+      return true;
+    } catch (error) {
+      console.error('[ChangeTracker] 采纳变更失败:', error);
+      return false;
+    }
+  }
+
+  /**
+   * 拒绝变更（恢复旧内容）
+   */
+  async rejectChange(changeId: string): Promise<boolean> {
+    if (!this.currentSession) {
+      return false;
+    }
+
+    const change = this.currentSession.changes.find(c => c.changeId === changeId);
+    if (!change) {
+      return false;
+    }
+
+    try {
+      const workspaceFolder = vscode.workspace.workspaceFolders?.[0];
+      if (!workspaceFolder) {
+        return false;
+      }
+
+      const absolutePath = path.join(workspaceFolder.uri.fsPath, change.filePath);
+
+      // 如果是新建文件，删除它
+      if (change.changeType === 'create') {
+        if (fs.existsSync(absolutePath)) {
+          await fs.promises.unlink(absolutePath);
+        }
+      } else {
+        // 恢复旧内容
+        await fs.promises.writeFile(absolutePath, change.oldContent, 'utf-8');
+      }
+
+      this.removeChange(changeId);
+      return true;
+    } catch (error) {
+      console.error('[ChangeTracker] 拒绝变更失败:', error);
+      return false;
+    }
+  }
+}
+
+export const changeTracker = new ChangeTrackerService();

src/services/toolExecutor.ts

@@ -8,6 +8,8 @@ import * as os from 'os';
 import * as fs from 'fs';
 import { readFileContent, readDirectory } from '../utils/readFiles';
 import { createOrOverwriteFile } from '../utils/createFiles';
+import { resolveWorkspaceFilePath, showFileDiff } from '../utils/fileDiff';
+import { changeTracker } from './changeTracker';
 import { generateVCD, checkIverilogAvailable, generateMultiVCD, DumpModule } from '../utils/iverilogRunner';
 import { analyzeVcdFile } from '../utils/vcdParser';
 import { executeWaveformTrace, WaveformTraceArgs } from '../utils/waveformTracer';
@@ -125,8 +127,19 @@ async function executeFileRead(args: FileReadArgs): Promise<string> {
  * 执行 file_write 工具
  */
 async function executeFileWrite(args: FileWriteArgs): Promise<string> {
+  const absolutePath = resolveWorkspaceFilePath(args.path);
+  const existedBeforeWrite = fs.existsSync(absolutePath);
+  const oldContent = existedBeforeWrite ? await readFileContent(args.path) : '';
+
   await createOrOverwriteFile(args.path, args.content);
 
+  // 记录文件变更
+  try {
+    changeTracker.trackChange(args.path, oldContent, args.content);
+  } catch (error) {
+    console.warn('[ToolExecutor] 记录文件变更失败:', error);
+  }
+
   // Verilog 文件添加知识图谱提示
   const isVerilogFile = args.path.endsWith('.v') || args.path.endsWith('.sv');
   if (isVerilogFile) {

src/types/fileChanges.ts

@@ -0,0 +1,47 @@
+/**
+ * 文件变更追踪类型定义
+ * 功能：定义代码变更的数据结构
+ * 依赖：无
+ * 使用场景：AI 修改文件后的变更审查
+ */
+
+/**
+ * 单个文件的变更记录
+ */
+export interface FileChange {
+  /** 文件相对路径 */
+  filePath: string;
+  /** 修改前的内容 */
+  oldContent: string;
+  /** 修改后的内容 */
+  newContent: string;
+  /** 变更时间戳 */
+  timestamp: number;
+  /** 变更类型 */
+  changeType: 'create' | 'modify' | 'delete';
+  /** 变更 ID（唯一标识） */
+  changeId: string;
+}
+
+/**
+ * 变更会话（一次对话的所有变更）
+ */
+export interface ChangeSession {
+  /** 会话 ID */
+  sessionId: string;
+  /** 会话开始时间 */
+  startTime: number;
+  /** 所有文件变更 */
+  changes: FileChange[];
+  /** 会话状态 */
+  status: 'active' | 'completed';
+}
+
+/**
+ * 变更操作结果
+ */
+export interface ChangeActionResult {
+  success: boolean;
+  message: string;
+  changeId: string;
+}

src/utils/diffRenderer.ts

@@ -0,0 +1,184 @@
+/**
+ * Diff 渲染工具
+ * 功能：生成代码差异的 HTML 展示
+ * 依赖：无
+ * 使用场景：在变更面板中展示文件修改的 diff
+ */
+
+interface DiffLine {
+  type: 'add' | 'remove' | 'context';
+  content: string;
+  oldLineNumber?: number;
+  newLineNumber?: number;
+}
+
+/**
+ * 简单的 diff 算法（基于行）
+ */
+export function generateDiff(oldContent: string, newContent: string): DiffLine[] {
+  const oldLines = oldContent.split('\n');
+  const newLines = newContent.split('\n');
+  const result: DiffLine[] = [];
+
+  let oldIndex = 0;
+  let newIndex = 0;
+
+  while (oldIndex < oldLines.length || newIndex < newLines.length) {
+    const oldLine = oldLines[oldIndex];
+    const newLine = newLines[newIndex];
+
+    if (oldIndex >= oldLines.length) {
+      // 只剩新行
+      result.push({
+        type: 'add',
+        content: newLine,
+        newLineNumber: newIndex + 1
+      });
+      newIndex++;
+    } else if (newIndex >= newLines.length) {
+      // 只剩旧行
+      result.push({
+        type: 'remove',
+        content: oldLine,
+        oldLineNumber: oldIndex + 1
+      });
+      oldIndex++;
+    } else if (oldLine === newLine) {
+      // 相同行
+      result.push({
+        type: 'context',
+        content: oldLine,
+        oldLineNumber: oldIndex + 1,
+        newLineNumber: newIndex + 1
+      });
+      oldIndex++;
+      newIndex++;
+    } else {
+      // 不同行，标记为删除和添加
+      result.push({
+        type: 'remove',
+        content: oldLine,
+        oldLineNumber: oldIndex + 1
+      });
+      result.push({
+        type: 'add',
+        content: newLine,
+        newLineNumber: newIndex + 1
+      });
+      oldIndex++;
+      newIndex++;
+    }
+  }
+
+  return result;
+}
+
+/**
+ * 将 diff 结果渲染为 HTML
+ */
+export function renderDiffHtml(diffLines: DiffLine[]): string {
+  let html = '<div class="diff-viewer">';
+
+  for (const line of diffLines) {
+    const lineClass = `diff-line diff-line-${line.type}`;
+    const oldNum = line.oldLineNumber ? `<span class="line-num">${line.oldLineNumber}</span>` : '<span class="line-num"></span>';
+    const newNum = line.newLineNumber ? `<span class="line-num">${line.newLineNumber}</span>` : '<span class="line-num"></span>';
+    const prefix = line.type === 'add' ? '+' : line.type === 'remove' ? '-' : ' ';
+    const escapedContent = escapeHtml(line.content);
+
+    html += `
+      <div class="${lineClass}">
+        ${oldNum}
+        ${newNum}
+        <span class="line-prefix">${prefix}</span>
+        <span class="line-content">${escapedContent}</span>
+      </div>
+    `;
+  }
+
+  html += '</div>';
+  return html;
+}
+
+/**
+ * 转义 HTML 特殊字符
+ */
+function escapeHtml(text: string): string {
+  const map: Record<string, string> = {
+    '&': '&amp;',
+    '<': '&lt;',
+    '>': '&gt;',
+    '"': '&quot;',
+    "'": '&#039;'
+  };
+  return text.replace(/[&<>"']/g, m => map[m]);
+}
+
+/**
+ * 获取 diff 样式
+ */
+export function getDiffStyles(): string {
+  return `
+    .diff-viewer {
+      font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
+      font-size: 12px;
+      line-height: 1.5;
+      background: var(--vscode-editor-background);
+      border: 1px solid var(--vscode-panel-border);
+      border-radius: 4px;
+      overflow-x: auto;
+    }
+
+    .diff-line {
+      display: flex;
+      align-items: center;
+      padding: 2px 0;
+      white-space: pre;
+    }
+
+    .diff-line-add {
+      background: rgba(40, 167, 69, 0.15);
+    }
+
+    .diff-line-remove {
+      background: rgba(220, 53, 69, 0.15);
+    }
+
+    .diff-line-context {
+      background: transparent;
+    }
+
+    .line-num {
+      display: inline-block;
+      width: 40px;
+      text-align: right;
+      padding: 0 8px;
+      color: var(--vscode-editorLineNumber-foreground);
+      user-select: none;
+      flex-shrink: 0;
+    }
+
+    .line-prefix {
+      display: inline-block;
+      width: 20px;
+      text-align: center;
+      font-weight: bold;
+      flex-shrink: 0;
+    }
+
+    .diff-line-add .line-prefix {
+      color: #28a745;
+    }
+
+    .diff-line-remove .line-prefix {
+      color: #dc3545;
+    }
+
+    .line-content {
+      flex: 1;
+      padding-right: 8px;
+      overflow-x: auto;
+    }
+  `;
+}
+

src/utils/fileDiff.ts

@@ -0,0 +1,51 @@
+import * as vscode from "vscode";
+import * as path from "path";
+
+/**
+ * 将相对路径解析为工作区绝对路径
+ */
+export function resolveWorkspaceFilePath(filePath: string): string {
+  if (path.isAbsolute(filePath)) {
+    return filePath;
+  }
+
+  const workspaceFolders = vscode.workspace.workspaceFolders;
+  if (!workspaceFolders || workspaceFolders.length === 0) {
+    throw new Error("请先打开一个文件夹作为工作区，这样我就能为您修改文件了");
+  }
+
+  return path.join(workspaceFolders[0].uri.fsPath, filePath);
+}
+
+/**
+ * 使用 VS Code 原生 diff 视图展示文件修改前后对比
+ */
+export async function showFileDiff(
+  filePath: string,
+  oldContent: string,
+  title?: string
+): Promise<void> {
+  const absolutePath = resolveWorkspaceFilePath(filePath);
+  const fileUri = vscode.Uri.file(absolutePath);
+  const newBytes = await vscode.workspace.fs.readFile(fileUri);
+  const newContent = Buffer.from(newBytes).toString("utf-8");
+
+  if (oldContent === newContent) {
+    return;
+  }
+
+  const language = (await vscode.workspace.openTextDocument(fileUri)).languageId;
+  const oldDoc = await vscode.workspace.openTextDocument({
+    content: oldContent,
+    language,
+  });
+
+  const diffTitle = title || `${path.basename(absolutePath)} (修改前 <-> 修改后)`;
+  await vscode.commands.executeCommand(
+    "vscode.diff",
+    oldDoc.uri,
+    fileUri,
+    diffTitle,
+    { preview: false }
+  );
+}

src/utils/messageHandler.ts

@@ -26,6 +26,9 @@ import {
 import { optimizePrompt } from "../services/promptOptimizeService";
 import { NotificationService } from "../services/notificationService";
 import { TrialExpirationService } from "../services/trialExpirationService";
+import { showFileDiff } from "./fileDiff";
+import { changeTracker } from "../services/changeTracker";
+import { generateDiff, renderDiffHtml } from "./diffRenderer";
 
 import type { RunMode, ServiceTier } from "../types/api";
 
@@ -38,6 +41,14 @@ let currentSession: DialogSession | null = null;
 /** 最后一个活跃的 taskId（用于压缩等操作） */
 let lastTaskId: string | null = null;
 
+async function trackFileChange(filePath: string, oldContent: string, newContent: string): Promise<void> {
+  try {
+    changeTracker.trackChange(filePath, oldContent, newContent);
+  } catch (error) {
+    console.warn("[MessageHandler] 记录文件变更失败:", error);
+  }
+}
+
 /**
  * 处理用户消息
  */
@@ -372,6 +383,9 @@ async function handleUserMessageWithBackend(
                 panel.reveal();
               }
             );
+
+            // 发送代码变更到前端
+            sendChangesToWebview(panel);
           } catch (error) {
             console.warn("[MessageHandler] 更新面板失败（面板可能已关闭）:", error);
           }
@@ -774,11 +788,14 @@ async function handleFileOperation(
         if (!operation.searchText || !operation.replaceText) {
           throw new Error("缺少替换内容");
         }
+        const oldContentBeforeReplace = await readFileContent(operation.filePath);
         await replaceFile(
           operation.filePath,
           operation.searchText,
           operation.replaceText
         );
+        const newContentAfterReplace = await readFileContent(operation.filePath);
+        await trackFileChange(operation.filePath, oldContentBeforeReplace, newContentAfterReplace);
         responseText = `✅ 文件内容替换成功: ${operation.filePath}`;
         panel.webview.postMessage({
           command: "receiveMessage",
@@ -914,7 +931,9 @@ export async function handleUpdateFile(
   content: string
 ) {
   try {
+    const oldContent = await readFileContent(filePath);
     await updateFile(filePath, content);
+    await trackFileChange(filePath, oldContent, content);
     panel.webview.postMessage({
       command: "fileUpdated",
       filePath: filePath,
@@ -979,7 +998,10 @@ export async function handleReplaceInFile(
   replaceText: string
 ) {
   try {
+    const oldContent = await readFileContent(filePath);
     await replaceFile(filePath, searchText, replaceText);
+    const newContent = await readFileContent(filePath);
+    await trackFileChange(filePath, oldContent, newContent);
     panel.webview.postMessage({
       command: "fileReplaced",
       filePath: filePath,
@@ -1236,3 +1258,165 @@ export async function handleOptimizePrompt(
     vscode.window.showErrorMessage(`提示词优化失败: ${errorMsg}`);
   }
 }
+
+/**
+ * 处理采纳变更
+ */
+export async function handleAcceptChange(
+  panel: vscode.WebviewPanel,
+  changeId: string
+) {
+  try {
+    const success = await changeTracker.acceptChange(changeId);
+    if (success) {
+      panel.webview.postMessage({
+        command: "changeAccepted",
+        changeId: changeId,
+        success: true
+      });
+    } else {
+      panel.webview.postMessage({
+        command: "changeAccepted",
+        changeId: changeId,
+        success: false,
+        error: "采纳变更失败"
+      });
+    }
+  } catch (error) {
+    console.error("[MessageHandler] 采纳变更失败:", error);
+    panel.webview.postMessage({
+      command: "changeAccepted",
+      changeId: changeId,
+      success: false,
+      error: String(error)
+    });
+  }
+}
+
+/**
+ * 处理拒绝变更
+ */
+export async function handleRejectChange(
+  panel: vscode.WebviewPanel,
+  changeId: string
+) {
+  try {
+    const success = await changeTracker.rejectChange(changeId);
+    if (success) {
+      panel.webview.postMessage({
+        command: "changeRejected",
+        changeId: changeId,
+        success: true
+      });
+    } else {
+      panel.webview.postMessage({
+        command: "changeRejected",
+        changeId: changeId,
+        success: false,
+        error: "拒绝变更失败"
+      });
+    }
+  } catch (error) {
+    console.error("[MessageHandler] 拒绝变更失败:", error);
+    panel.webview.postMessage({
+      command: "changeRejected",
+      changeId: changeId,
+      success: false,
+      error: String(error)
+    });
+  }
+}
+
+/**
+ * 在对话结束时发送变更列表到前端
+ */
+export function sendChangesToWebview(panel: vscode.WebviewPanel) {
+  const session = changeTracker.endSession();
+  if (session && session.changes.length > 0) {
+    const changesWithDiff = session.changes.map(change => {
+      const diffLines = generateDiff(change.oldContent, change.newContent);
+      const diffHtml = renderDiffHtml(diffLines);
+      return {
+        ...change,
+        diffHtml
+      };
+    });
+
+    panel.webview.postMessage({
+      command: "showChanges",
+      changes: changesWithDiff
+    });
+  }
+}
+
+/**
+ * 开始新的变更会话
+ */
+export function startChangeSession(sessionId: string) {
+  changeTracker.startSession(sessionId);
+}
+
+/**
+ * 打开文件 diff 编辑器
+ */
+export async function handleOpenFileDiff(
+  panel: vscode.WebviewPanel,
+  changeId: string
+) {
+  try {
+    const session = changeTracker.getCurrentSession();
+    if (!session) {
+      vscode.window.showErrorMessage('没有找到变更会话');
+      return;
+    }
+
+    const change = session.changes.find(c => c.changeId === changeId);
+    if (!change) {
+      vscode.window.showErrorMessage('没有找到该变更');
+      return;
+    }
+
+    const workspaceFolder = vscode.workspace.workspaceFolders?.[0];
+    if (!workspaceFolder) {
+      vscode.window.showErrorMessage('没有打开的工作区');
+      return;
+    }
+
+    // 创建临时文件用于对比
+    const filePath = change.filePath;
+    const absolutePath = vscode.Uri.file(
+      path.join(workspaceFolder.uri.fsPath, filePath)
+    );
+
+    // 创建虚拟文档显示旧内容
+    const oldUri = vscode.Uri.parse(
+      `ic-coder-diff:${filePath}.old?${changeId}`
+    ).with({ scheme: 'ic-coder-diff' });
+
+    // 注册文档内容提供者（如果还没注册）
+    if (!(global as any).__diffProviderRegistered) {
+      const provider = new (class implements vscode.TextDocumentContentProvider {
+        provideTextDocumentContent(uri: vscode.Uri): string {
+          const changeId = uri.query;
+          const session = changeTracker.getCurrentSession();
+          const change = session?.changes.find(c => c.changeId === changeId);
+          return change?.oldContent || '';
+        }
+      })();
+
+      vscode.workspace.registerTextDocumentContentProvider('ic-coder-diff', provider);
+      (global as any).__diffProviderRegistered = true;
+    }
+
+    // 打开 diff 编辑器
+    await vscode.commands.executeCommand(
+      'vscode.diff',
+      oldUri,
+      absolutePath,
+      `${filePath} (变更对比)`
+    );
+  } catch (error) {
+    console.error('[MessageHandler] 打开 diff 失败:', error);
+    vscode.window.showErrorMessage(`打开 diff 失败: ${error}`);
+  }
+}

src/views/changePanel.ts

@@ -0,0 +1,366 @@
+/**
+ * 代码变更面板组件
+ * 功能：显示 AI 修改的文件列表和 diff 对比
+ * 依赖：utils/diffRenderer
+ * 使用场景：对话结束后展示代码变更供用户审查
+ */
+
+import { getDiffStyles } from '../utils/diffRenderer';
+
+/**
+ * 获取变更面板的 HTML 内容
+ */
+export function getChangePanelContent(): string {
+  return `
+    <div class="change-panel" id="changePanel" style="display: none;">
+      <div class="change-panel-header">
+        <div class="change-panel-title">
+          <span class="change-icon">📝</span>
+          <span>代码变更</span>
+          <span class="change-count" id="changeCount">0</span>
+        </div>
+        <button class="change-toggle-btn" id="changePanelToggle" onclick="toggleChangePanel()">
+          <span class="toggle-icon">▼</span>
+        </button>
+      </div>
+      <div class="change-panel-body" id="changePanelBody" style="display: none;">
+        <div class="change-list" id="changeList">
+          <!-- 变更列表将动态插入 -->
+        </div>
+      </div>
+    </div>
+  `;
+}
+
+/**
+ * 获取变更面板的样式
+ */
+export function getChangePanelStyles(): string {
+  return `
+    .change-panel {
+      margin-bottom: 12px;
+      border: 1px solid var(--vscode-panel-border);
+      border-radius: 6px;
+      background: var(--vscode-editor-background);
+      overflow: hidden;
+    }
+
+    .change-panel-header {
+      display: flex;
+      justify-content: space-between;
+      align-items: center;
+      padding: 10px 12px;
+      background: var(--vscode-sideBar-background);
+      cursor: pointer;
+      user-select: none;
+    }
+
+    .change-panel-header:hover {
+      background: var(--vscode-list-hoverBackground);
+    }
+
+    .change-panel-title {
+      display: flex;
+      align-items: center;
+      gap: 8px;
+      font-size: 13px;
+      font-weight: 500;
+    }
+
+    .change-icon {
+      font-size: 16px;
+    }
+
+    .change-count {
+      background: var(--vscode-badge-background);
+      color: var(--vscode-badge-foreground);
+      padding: 2px 8px;
+      border-radius: 10px;
+      font-size: 11px;
+      font-weight: 600;
+    }
+
+    .change-toggle-btn {
+      background: transparent;
+      border: none;
+      color: var(--vscode-foreground);
+      cursor: pointer;
+      padding: 4px 8px;
+      border-radius: 4px;
+      transition: background 0.2s;
+    }
+
+    .change-toggle-btn:hover {
+      background: var(--vscode-toolbar-hoverBackground);
+    }
+
+    .toggle-icon {
+      display: inline-block;
+      transition: transform 0.2s;
+    }
+
+    .toggle-icon.expanded {
+      transform: rotate(180deg);
+    }
+
+    .change-panel-body {
+      border-top: 1px solid var(--vscode-panel-border);
+      max-height: 400px;
+      overflow-y: auto;
+    }
+
+    .change-list {
+      padding: 8px;
+    }
+
+    .change-item {
+      border: 1px solid var(--vscode-panel-border);
+      border-radius: 4px;
+      margin-bottom: 8px;
+      overflow: hidden;
+      background: var(--vscode-editor-background);
+    }
+
+    .change-item-header {
+      display: flex;
+      justify-content: space-between;
+      align-items: center;
+      padding: 8px 12px;
+      background: var(--vscode-sideBar-background);
+      cursor: pointer;
+    }
+
+    .change-item-header:hover {
+      background: var(--vscode-list-hoverBackground);
+    }
+
+    .change-item-info {
+      display: flex;
+      align-items: center;
+      gap: 8px;
+      flex: 1;
+      min-width: 0;
+    }
+
+    .change-type-badge {
+      padding: 2px 6px;
+      border-radius: 3px;
+      font-size: 10px;
+      font-weight: 600;
+      text-transform: uppercase;
+    }
+
+    .change-type-create {
+      background: #28a745;
+      color: white;
+    }
+
+    .change-type-modify {
+      background: #ffc107;
+      color: black;
+    }
+
+    .change-type-delete {
+      background: #dc3545;
+      color: white;
+    }
+
+    .change-file-path {
+      font-size: 12px;
+      color: var(--vscode-foreground);
+      overflow: hidden;
+      text-overflow: ellipsis;
+      white-space: nowrap;
+    }
+
+    .change-item-actions {
+      display: flex;
+      gap: 6px;
+    }
+
+    .change-action-btn {
+      padding: 4px 10px;
+      border: none;
+      border-radius: 3px;
+      font-size: 11px;
+      cursor: pointer;
+      transition: opacity 0.2s;
+    }
+
+    .change-action-btn:hover {
+      opacity: 0.8;
+    }
+
+    .accept-btn {
+      background: #28a745;
+      color: white;
+    }
+
+    .reject-btn {
+      background: #dc3545;
+      color: white;
+    }
+
+    .change-item-diff {
+      padding: 12px;
+      background: var(--vscode-editor-background);
+      border-top: 1px solid var(--vscode-panel-border);
+      display: none;
+      max-height: 300px;
+      overflow-y: auto;
+    }
+
+    .change-item-diff.expanded {
+      display: block;
+    }
+
+    ${getDiffStyles()}
+  `;
+}
+
+/**
+ * 获取变更面板的脚本
+ */
+export function getChangePanelScript(): string {
+  return `
+    // 切换变更面板展开/收起
+    function toggleChangePanel() {
+      const body = document.getElementById('changePanelBody');
+      const toggleIcon = document.querySelector('.toggle-icon');
+
+      if (body.style.display === 'none') {
+        body.style.display = 'block';
+        toggleIcon.classList.add('expanded');
+      } else {
+        body.style.display = 'none';
+        toggleIcon.classList.remove('expanded');
+      }
+    }
+
+    // 打开文件 diff（在 VS Code 中打开）
+    function openFileDiff(changeId) {
+      vscode.postMessage({
+        command: 'openFileDiff',
+        changeId: changeId
+      });
+    }
+
+    // 采纳变更
+    function acceptChange(changeId) {
+      vscode.postMessage({
+        command: 'acceptChange',
+        changeId: changeId
+      });
+    }
+
+    // 拒绝变更
+    function rejectChange(changeId) {
+      vscode.postMessage({
+        command: 'rejectChange',
+        changeId: changeId
+      });
+    }
+
+    // 显示变更面板（从后端接收变更列表）
+    window.showChangesPanel = function(changes) {
+      const changePanel = document.getElementById('changePanel');
+      const changeList = document.getElementById('changeList');
+      const changeCount = document.getElementById('changeCount');
+
+      if (!changePanel || !changeList || !changeCount) {
+        return;
+      }
+
+      // 更新变更数量
+      changeCount.textContent = changes.length;
+
+      // 清空现有列表
+      changeList.innerHTML = '';
+
+      // 渲染每个变更项
+      changes.forEach(change => {
+        const changeItem = createChangeItem(change);
+        changeList.appendChild(changeItem);
+      });
+
+      // 显示面板
+      changePanel.style.display = 'block';
+    };
+
+    // 创建单个变更项的 DOM 元素
+    function createChangeItem(change) {
+      const item = document.createElement('div');
+      item.className = 'change-item';
+      item.id = 'change-item-' + change.changeId;
+
+      const typeLabel = change.changeType === 'create' ? '新建' :
+                        change.changeType === 'modify' ? '修改' : '删除';
+
+      item.innerHTML = \`
+        <div class="change-item-header" onclick="openFileDiff('\${change.changeId}')">
+          <div class="change-item-info">
+            <span class="change-type-badge change-type-\${change.changeType}">\${typeLabel}</span>
+            <span class="change-file-path">\${change.filePath}</span>
+          </div>
+          <div class="change-item-actions">
+            <button class="change-action-btn accept-btn" onclick="event.stopPropagation(); acceptChange('\${change.changeId}')">采纳</button>
+            <button class="change-action-btn reject-btn" onclick="event.stopPropagation(); rejectChange('\${change.changeId}')">拒绝</button>
+          </div>
+        </div>
+      \`;
+
+      return item;
+    }
+
+    // 处理采纳变更的响应
+    window.handleChangeAccepted = function(changeId, success, error) {
+      if (success) {
+        // 从列表中移除该变更项
+        const item = document.getElementById('change-item-' + changeId);
+        if (item) {
+          item.remove();
+        }
+
+        // 更新变更数量
+        updateChangeCount();
+      } else {
+        console.error('采纳变更失败:', error);
+        alert('采纳变更失败: ' + (error || '未知错误'));
+      }
+    };
+
+    // 处理拒绝变更的响应
+    window.handleChangeRejected = function(changeId, success, error) {
+      if (success) {
+        // 从列表中移除该变更项
+        const item = document.getElementById('change-item-' + changeId);
+        if (item) {
+          item.remove();
+        }
+
+        // 更新变更数量
+        updateChangeCount();
+      } else {
+        console.error('拒绝变更失败:', error);
+        alert('拒绝变更失败: ' + (error || '未知错误'));
+      }
+    };
+
+    // 更新变更数量
+    function updateChangeCount() {
+      const changeList = document.getElementById('changeList');
+      const changeCount = document.getElementById('changeCount');
+      const changePanel = document.getElementById('changePanel');
+
+      if (changeList && changeCount) {
+        const count = changeList.children.length;
+        changeCount.textContent = count;
+
+        // 如果没有变更了，隐藏面板
+        if (count === 0 && changePanel) {
+          changePanel.style.display = 'none';
+        }
+      }
+    }
+  `;
+}

src/views/inputArea.ts

@@ -34,6 +34,11 @@ import {
   getExampleShowcaseStyles,
   getExampleShowcaseScript,
 } from "./exampleShowcase";
+import {
+  getChangePanelContent,
+  getChangePanelStyles,
+  getChangePanelScript,
+} from "./changePanel";
 import { sendIconSvg, stopIconSvg } from "../constants/toolIcons";
 
 /**
@@ -49,6 +54,8 @@ export function getInputAreaContent(
     <div class="input-area centered" id="inputArea">
       <div class="input-group">
         <div class="input-wrapper">
+          <!-- 代码变更面板 -->
+          ${getChangePanelContent()}
           <!-- 顶部工具栏 -->
           <div class="input-top-toolbar">
             ${getContextButtonContent()}
@@ -94,6 +101,7 @@ export function getInputAreaStyles(): string {
     ${getContextCompressStyles()}
     ${getOptimizeButtonStyles()}
     ${getExampleShowcaseStyles()}
+    ${getChangePanelStyles()}
     .input-area {
       border-top: 1px solid var(--vscode-panel-border);
       padding-top: 15px;
@@ -300,6 +308,7 @@ export function getInputAreaScript(): string {
     ${getContextButtonScript()}
     ${getContextCompressScript()}
     ${getOptimizeButtonScript()}
+    ${getChangePanelScript()}
 
     // 对话状态管理
     let isConversationActive = false;

src/views/webviewContent.ts

@@ -882,6 +882,27 @@ export function getWebviewContent(
           }
           break;
 
+        case 'showChanges':
+          // 显示代码变更
+          if (typeof showChangesPanel === 'function') {
+            showChangesPanel(message.changes);
+          }
+          break;
+
+        case 'changeAccepted':
+          // 变更已采纳
+          if (typeof handleChangeAccepted === 'function') {
+            handleChangeAccepted(message.changeId, message.success, message.error);
+          }
+          break;
+
+        case 'changeRejected':
+          // 变更已拒绝
+          if (typeof handleChangeRejected === 'function') {
+            handleChangeRejected(message.changeId, message.success, message.error);
+          }
+          break;
+
         default:
           console.log('[WebView] 未处理的消息类型:', message.command);
       }