ai-refactor(flow): 调整抽象流程节点实现和依赖路径

- 修改 AbstractProcessNode 中 ProcessContext 的命名空间引用为 app\flow\context\ProcessContext
- 引入 app\flow\vo\CanHandleResult 用于节点处理结果表示
- 更新前置策略执行后对成功状态的判断，改为调用 isSuccess() 方法
- 增加日志记录细节，便于调试策略执行中断时的错误信息
- 优化代码注释，提升代码可读性和维护性

app/flow/nodes/VirtualWashMachineNode.php

@@ -3,9 +3,10 @@
 namespace app\flow\nodes;
 
 use app\config\Config;
-use app\flow\DbOperationType;
-use app\flow\ProcessContext;
-use app\flow\VoiceMessage;
+use app\flow\enum\DbOperationType;
+use app\flow\context\ProcessContext;
+use app\flow\enum\VoiceMessage;
+use app\flow\vo\CanHandleResult;
 
 /**
  * 虚拟清洗机节点
@@ -32,20 +33,22 @@ class VirtualWashMachineNode extends AbstractProcessNode
     /**
      * 判断当前节点是否能处理该步骤
      */
-    public function canHandle(ProcessContext $context): bool
+    public function canHandle(ProcessContext $context): CanHandleResult
     {
         // 如果内镜未取出
-        if ($context->isInStorage) {
-            $context->expectedNextStep = VoiceMessage::PLEASE_SWIPE_STORAGE_OUT;
-            return false;
+        if ($context->getStorage()->isInStorage) {
+            return CanHandleResult::no(VoiceMessage::PLEASE_SWIPE_STORAGE_OUT);
         }
 
         // 如果不是机洗
-        if ($context->readerType !== MachineWashNode::getName()) {
-            return false;
+        if ($context->getReader()->type !== MachineWashNode::getName()) {
+            return CanHandleResult::no();
         }
 
-        return Config::getInstance()->enableVirtualCleanerParser;
+        if (Config::getInstance()->enableVirtualCleanerParser) {
+            return CanHandleResult::yes();
+        }
+        return CanHandleResult::no();
     }
 
     /**