refactor(vscode-ide-companion): 重构代码并更新文件命名

- 更新文件命名规则，使用小写字母和下划线
- 修复部分代码导入路径
- 删除未使用的 WEBVIEW_PIN_FEATURE.md 文件

packages/vscode-ide-companion/src/extension.ts

@@ -15,7 +15,7 @@ import {
   type IdeInfo,
 } from '@qwen-code/qwen-code-core/src/ide/detect-ide.js';
 import { WebViewProvider } from './WebViewProvider.js';
-import { AuthStateManager } from './auth/AuthStateManager.js';
+import { AuthStateManager } from './auth/authStateManager.js';
 
 const CLI_IDE_COMPANION_IDENTIFIER = 'qwenlm.qwen-code-vscode-ide-companion';
 const INFO_MESSAGE_SHOWN_KEY = 'qwenCodeInfoMessageShown';