feat(vscode-ide-companion): 优化权限请求组件并添加错误处理功能

- 移动权限请求组件到抽屉中，优化用户体验
- 为权限选项添加编号，提高可识别性
- 实现错误对象的特殊处理，提取更有意义的错误信息
- 优化工具调用错误内容的展示，提高错误信息的可读性

packages/vscode-ide-companion/src/webview/App.tsx

@@ -8,10 +8,10 @@ import React, { useState, useEffect, useRef } from 'react';
 import { useVSCode } from './hooks/useVSCode.js';
 import type { Conversation } from '../storage/conversationStore.js';
 import {
-  PermissionRequest,
   type PermissionOption,
   type ToolCall as PermissionToolCall,
 } from './components/PermissionRequest.js';
+import { PermissionDrawer } from './components/PermissionDrawer.js';
 import { ToolCall, type ToolCallData } from './components/ToolCall.js';
 import { EmptyState } from './components/EmptyState.js';
 
@@ -624,11 +624,7 @@ export const App: React.FC = () => {
   };
 
   // Check if there are any messages or active content
-  const hasContent =
-    messages.length > 0 ||
-    isStreaming ||
-    toolCalls.size > 0 ||
-    permissionRequest !== null;
+  const hasContent = messages.length > 0 || isStreaming || toolCalls.size > 0;
 
   return (
     <div className="chat-container">
@@ -810,15 +806,6 @@ export const App: React.FC = () => {
               <ToolCall key={toolCall.toolCallId} toolCall={toolCall} />
             ))}
 
-            {/* Permission Request */}
-            {permissionRequest && (
-              <PermissionRequest
-                options={permissionRequest.options}
-                toolCall={permissionRequest.toolCall}
-                onResponse={handlePermissionResponse}
-              />
-            )}
-
             {/* Loading/Waiting Message - in message list */}
             {isWaitingForResponse && loadingMessage && (
               <div className="message assistant waiting-message">
@@ -1003,6 +990,17 @@ export const App: React.FC = () => {
           </form>
         </div>
       </div>
+
+      {/* Permission Drawer - Cursor style */}
+      {permissionRequest && (
+        <PermissionDrawer
+          isOpen={!!permissionRequest}
+          options={permissionRequest.options}
+          toolCall={permissionRequest.toolCall}
+          onResponse={handlePermissionResponse}
+          onClose={() => setPermissionRequest(null)}
+        />
+      )}
     </div>
   );
 };