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/context/ProcessContextBuilder.php

@@ -15,6 +15,7 @@ use app\flow\vo\StorageStatus;
 use app\flow\vo\VoiceState;
 use app\flow\enum\DbOperationType;
 use app\flow\enum\VoiceMessage;
+use app\flow\vo\BatchNo;
 use app\model\EctActions;
 use app\net\PacketContext;
 use app\repository\EctActionsRepository;
@@ -316,28 +317,11 @@ class ProcessContextBuilder
 
     /**
      * 生成批次号
+     * @return string 批次号值
      */
     private function generateBatchNo(): string
     {
-        $existingBatchNo = null;
-        if (!$this->endoscope->isEmpty()) {
-            $existingBatchNo = EctActionsRepository::new()->findTodayActiveBatchNo($this->config->machineId);
-        }
-
-        $datePart = date('Ymd');
-        $sequence = 1;
-
-        if (!empty($existingBatchNo)) {
-            $existingDatePart = substr($existingBatchNo, 0, 8);
-            $existingSequence = substr($existingBatchNo, 10, 4);
-
-            if ($existingDatePart === $datePart && is_numeric($existingSequence)) {
-                $sequence = (int)$existingSequence + 1;
-            }
-        }
-
-        $sequencePart = str_pad($sequence, 4, '0', STR_PAD_LEFT);
-        return $datePart . $this->config->machineId . $sequencePart;
+        return BatchNo::generate($this->config->machineId)->value;
     }
 
     // ==================== 值对象设置方法 ====================