阶段3-driver抽象: powershell助手拆至driver/windows, 五域AutomationDriver接口+WindowsDriver(PowerShell实现行为不变), desktop/window-extended/system-extended/common-final改走driver, catalog构建填充platformTag=win32

packages/rpa-core/src/engine/engine.ts

@@ -1,5 +1,7 @@
 import type { Client } from "basic-ftp";
 import type { Workbook as ExcelJSWorkbook } from "exceljs";
+import { WindowsDriver } from "../driver/windows/windows-driver";
+import type { AutomationDriver } from "../driver/types";
 
 /** 人为拟真操作的开关与随机参数（desktop 能力的进程级设置）。 */
 export interface ManualOperationSettings {
@@ -39,6 +41,8 @@ export class RpaEngine {
     minMs: 1000,
     maxMs: 3000
   };
+  /** 桌面自动化驱动（任务 3.4 注入点，默认 PowerShell 版 WindowsDriver） */
+  readonly driver: AutomationDriver = new WindowsDriver();
 }
 
 export function createEngine(): RpaEngine {