feat(pigx-flow-api): 新增流程状态事件注册与校验功能

- 在FlowStatusEventPublisher中添加流程ID注册和校验方法，使用Redis Set存储已注册的flowId
- 更新FlowStatusEventAutoConfiguration，在启动时自动注册所有本地flowId到Redis
- 重构ProcessServiceImpl中的validateFlowId方法，改为通过Redis查询flowId注册状态
- 优化BpmOaLeaveServiceImpl中的流程参数设置逻辑，使用Dict构建root用户信息

pigx-flow/pigx-flow-api/src/main/java/com/pig4cloud/pigx/flow/config/FlowStatusEventAutoConfiguration.java

@@ -40,7 +40,9 @@ public class FlowStatusEventAutoConfiguration {
 	@ConditionalOnMissingBean
 	@ConditionalOnBean(IProcessInstanceStatusEventService.class)
 	public FlowStatusEventListener flowStatusEventListener(List<IProcessInstanceStatusEventService> eventServices,
-			StringRedisTemplate redisTemplate) {
+			StringRedisTemplate redisTemplate, FlowStatusEventPublisher publisher) {
+		// 启动时注册所有本地 flowId 到 Redis
+		eventServices.forEach(service -> publisher.registerFlowId(service.getFlowId()));
 		return new FlowStatusEventListener(eventServices, redisTemplate);
 	}
 

pigx-flow/pigx-flow-api/src/main/java/com/pig4cloud/pigx/flow/event/FlowStatusEventPublisher.java

@@ -1,6 +1,7 @@
 package com.pig4cloud.pigx.flow.event;
 
 import cn.hutool.json.JSONUtil;
+import com.pig4cloud.pigx.common.core.constant.CacheConstants;
 import com.pig4cloud.pigx.flow.dto.ProcessInstanceParamDto;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -21,6 +22,8 @@ public class FlowStatusEventPublisher {
 
 	public static final String CHANNEL = "pigx:flow:status";
 
+	public static final String REGISTERED_FLOW_IDS_KEY = CacheConstants.GLOBALLY + "flow:registered-flow-ids";
+
 	private final StringRedisTemplate redisTemplate;
 
 	/**
@@ -34,4 +37,22 @@ public class FlowStatusEventPublisher {
 				paramDto.getProcessInstanceId());
 	}
 
+	/**
+	 * 注册 flowId 到 Redis Set
+	 * @param flowId 流程定义Key
+	 */
+	public void registerFlowId(String flowId) {
+		redisTemplate.opsForSet().add(REGISTERED_FLOW_IDS_KEY, flowId);
+		log.debug("注册 flowId: {}", flowId);
+	}
+
+	/**
+	 * 校验 flowId 是否已注册
+	 * @param flowId 流程定义Key
+	 * @return true 表示已注册
+	 */
+	public boolean isFlowIdRegistered(String flowId) {
+		return Boolean.TRUE.equals(redisTemplate.opsForSet().isMember(REGISTERED_FLOW_IDS_KEY, flowId));
+	}
+
 }