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/DuplicateCheckNode.php

@@ -2,9 +2,10 @@
 
 namespace app\flow\nodes;
 
-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;
 use app\repository\EctActionsRepository;
 use app\utils\Logger;
 
@@ -36,9 +37,12 @@ class DuplicateCheckNode extends AbstractProcessNode
      * 
      * 所有需要数据库记录的场景都需要经过本节点检查
      */
-    public function canHandle(ProcessContext $context): bool
+    public function canHandle(ProcessContext $context): CanHandleResult
     {
-        return $context->previousAction->process_name === $context->readerType;
+        if ($context->getPreviousAction()?->process_name === $context->getReader()->type) {
+            return CanHandleResult::yes();
+        }
+        return CanHandleResult::no();
     }
 
     /**
@@ -46,7 +50,6 @@ class DuplicateCheckNode extends AbstractProcessNode
      */
     protected function doHandle(ProcessContext $context): ProcessContext
     {
-        $context->setError(VoiceMessage::DUPLICATE_SWIPING);
-        return $context;
+        return $context->builder()->error(VoiceMessage::DUPLICATE_SWIPING)->build();
     }
 }