fix(vscode-ide-companion): improve message logging and permission handling

- Increase message logging truncation limit from 500 to 1500 characters
- Fix permission option mapping logic for reject_once/cancel options
- Add TODO comments for diff accept/cancel responses during permission requests

Resolves issues with permission handling and improves debugging capabilities.

packages/vscode-ide-companion/src/webview/handlers/FileMessageHandler.ts

@@ -9,6 +9,7 @@ import * as fs from 'fs';
 import * as os from 'os';
 import * as path from 'path';
 import { BaseMessageHandler } from './BaseMessageHandler.js';
+import { FileOperations } from '../FileOperations.js';
 import { getFileName } from '../utils/webviewUtils.js';
 
 /**
@@ -322,11 +323,7 @@ export class FileMessageHandler extends BaseMessageHandler {
     }
 
     try {
-      const uri = vscode.Uri.file(path);
-      await vscode.window.showTextDocument(uri, {
-        preview: false,
-        preserveFocus: false,
-      });
+      await FileOperations.openFile(path);
     } catch (error) {
       console.error('[FileMessageHandler] Failed to open file:', error);
       vscode.window.showErrorMessage(`Failed to open file: ${error}`);