yxk-20260728

改善提案
流程启动成功后，以提案名称写入运行时变量 title。
写入固定流程名称 flow_name=改善提案审批。
同步覆盖 bpm_biz_title 为 提案名称【改善提案审批】，修正启动时因表达式变量缺失产生的空标题。
启动前校验 proposal_name 非空。

jeecg-module-supervision/src/main/java/org/jeecg/modules/improvementproposal/service/impl/ImprovementProposalServiceImpl.java

@@ -17,9 +17,11 @@ import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.transaction.annotation.Transactional;
 import java.io.Serializable;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Collection;
 import java.util.Date;
+import java.util.Map;
 import org.flowable.engine.RuntimeService;
 import org.flowable.engine.TaskService;
 import org.flowable.task.api.Task;
@@ -38,6 +40,7 @@ public class ImprovementProposalServiceImpl extends ServiceImpl<ImprovementPropo
 	private static final String NORMAL_DEL_FLAG = "0";
 	private static final String BPM_STATUS_DRAFT = "1";
 	private static final String FLOW_CODE = "dev_improvement_proposal_001";
+	private static final String FLOW_NAME = "改善提案审批";
 	private static final String BPM_FORM_URL = "gh/improvementProposal/components/ImprovementProposalBPMForm";
 	private static final String TASK_INITIAL_REVIEW = "Task_improve001";
 	private static final String TASK_LEADER_AWARD = "Task_improve003";
@@ -65,6 +68,9 @@ public class ImprovementProposalServiceImpl extends ServiceImpl<ImprovementPropo
 	@Transactional(rollbackFor = Exception.class)
 	public String startProcess(String id, String username) {
 		ImprovementProposal proposal = getDraftProposalForUpdate(id);
+		if (oConvertUtils.isEmpty(proposal.getProposalName())) {
+			throw new IllegalStateException("提案名称不能为空，无法发起流程");
+		}
 		try {
 			// 改善提案以自身主表 ID 作为流程业务键，不引入 task_task 的重复督办中间表。
 			Result<String> result = bpmBaseExtApi.startMutilProcess(FLOW_CODE, proposal.getId(), BPM_FORM_URL, BPM_FORM_URL, username, null);
@@ -73,6 +79,13 @@ public class ImprovementProposalServiceImpl extends ServiceImpl<ImprovementPropo
 			}
 
 			// 流程引擎会按 BPM 配置将 bpm_status 回写为处理中；此处使用局部对象更新，避免旧实体的草稿状态将其覆盖。
+			// 主表没有 title、flow_name 字段，启动时标题表达式无法解析；在流程实例创建后立即补齐并覆盖空业务标题。
+			Map<String, Object> titleVariables = new HashMap<>(3);
+			titleVariables.put("title", proposal.getProposalName());
+			titleVariables.put("flow_name", FLOW_NAME);
+			titleVariables.put("bpm_biz_title", proposal.getProposalName() + "【" + FLOW_NAME + "】");
+			runtimeService.setVariables(result.getResult(), titleVariables);
+
 			ImprovementProposal processUpdate = new ImprovementProposal();
 			processUpdate.setId(proposal.getId());
 			processUpdate.setProcessInstanceId(result.getResult());