refactor: 重构为 Webview Review 面板架构

- 移除旧的 DiffEngine、InlineDecorator、CodeLensProvider 等模块
- 新增 ChangeSetManager 统一管理代码变更快照
- 新增 reviewPanel.ts 实现双栏 Review Webview 面板
- 简化 hookHandler.ts，直接通过 ChangeSet 收集变更
- 简化 extension.ts 入口，移除冗余模块导入
- 更新 types.ts，精简 ChangeSet 和 ChangeEntry 类型定义
- package.json 添加 onStartupFinished 激活事件

scripts/build-package.bat

@@ -0,0 +1,33 @@
+@echo off
+echo ========================================
+echo AI Code Diff Preview - 构建打包脚本
+echo ========================================
+
+echo.
+echo [1/4] 清理旧文件...
+if exist dist rmdir /s /q dist
+if exist *.vsix del *.vsix
+
+echo.
+echo [2/4] 安装依赖...
+call npm install
+
+echo.
+echo [3/4] 编译构建...
+call npm run build
+
+echo.
+echo [4/4] 打包 VSIX...
+call npx vsce package
+
+echo.
+echo ========================================
+echo 构建完成！
+echo.
+echo 生成的文件:
+dir /b *.vsix
+echo.
+echo 安装方法:
+echo   code --install-extension ai-diff-preview-0.1.0.vsix
+echo ========================================
+pause

scripts/hook-trigger.js

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+#!/usr/bin/env node
+/**
+ * Claude Code PostToolUse Hook 脚本
+ *
+ * 当 Claude Code 执行 Write 或 Edit 工具后，此脚本被调用。
+ * 它从 stdin 读取 JSON，将事件写入触发文件，供 VSCode 扩展监听。
+ *
+ * stdin JSON 格式:
+ * {
+ *   "session_id": "abc123",
+ *   "tool_name": "Write" | "Edit",
+ *   "tool_input": { "file_path": "...", "content": "..." },
+ *   "tool_response": { "success": true }
+ * }
+ */
+
+const fs = require('fs');
+const path = require('path');
+
+// 触发文件目录 - VSCode 扩展会监听此目录
+const TRIGGER_DIR = path.join(__dirname, '..', '.claude', 'hooks');
+const TRIGGER_FILE = path.join(TRIGGER_DIR, 'pending.json');
+
+async function main() {
+  // 读取 stdin
+  const chunks = [];
+  for await (const chunk of process.stdin) {
+    chunks.push(chunk);
+  }
+  const input = Buffer.concat(chunks).toString('utf-8');
+
+  let data;
+  try {
+    data = JSON.parse(input);
+  } catch (e) {
+    // 非 JSON 输入，忽略
+    process.exit(0);
+  }
+
+  const { tool_name, tool_input, tool_response } = data;
+
+  // 只处理成功的 Write/Edit 操作
+  if (!tool_response || tool_response.error) {
+    process.exit(0);
+  }
+
+  const filePath = tool_input?.file_path || tool_response?.filePath;
+  if (!filePath) {
+    process.exit(0);
+  }
+
+  // 构造事件数据
+  const event = {
+    type: tool_name === 'Write' ? 'after_write_file' : 'after_code_edit',
+    filePath: filePath,
+    content: tool_input?.content || '',
+    patch: tool_input?.new_content || tool_input?.content || '',
+    oldString: tool_input?.old_string || '',
+    newString: tool_input?.new_string || '',
+    timestamp: Date.now(),
+    toolName: tool_name,
+  };
+
+  // 确保目录存在
+  if (!fs.existsSync(TRIGGER_DIR)) {
+    fs.mkdirSync(TRIGGER_DIR, { recursive: true });
+  }
+
+  // 写入触发文件（原子写入：先写临时文件再重命名）
+  const tmpFile = TRIGGER_FILE + '.tmp';
+  fs.writeFileSync(tmpFile, JSON.stringify(event, null, 2), 'utf-8');
+  fs.renameSync(tmpFile, TRIGGER_FILE);
+}
+
+main().catch(() => {
+  // 静默失败，不阻塞 Claude Code
+  process.exit(0);
+});

scripts/install-local.bat

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+@echo off
+echo ========================================
+echo AI Code Diff Preview - 本地安装脚本
+echo ========================================
+
+echo.
+echo [1/2] 构建插件...
+call npm run build
+
+echo.
+echo [2/2] 安装到 VSCode...
+call code --install-extension .
+
+echo.
+echo ========================================
+echo 安装完成！
+echo 请重启 VSCode 或重新加载窗口 (Ctrl+Shift+P -> Reload Window)
+echo ========================================
+pause