feat(declare): 同一申报项目进行中只允许一条申报

- 新增 DeclareGuardService：按已通过/未处理驳回/待审核数判重，申报项目行加锁防连点
- 9 张申报表补 declare_id / declare_status / declare_remark，提交时写入并随审核结果回写
- 新增撤回、作废（强制放行）接口；挑战杯团队成员按手机号判重
- 申报项目支持配置允许重复提交与最多同时条数
- 迁移脚本 sql/20261102_add_declare_uniqueness.sql（含存量回填与重复清单）

src/main/java/com/gxwebsoft/gxmu/controller/QmgcFormController.java

@@ -14,6 +14,9 @@ import com.gxwebsoft.gxmu.entity.QmgcForm;
 import com.gxwebsoft.gxmu.param.QmgcFormParam;
 import com.gxwebsoft.gxmu.service.QmgcFormService;
 import com.gxwebsoft.gxmu.service.ReviewFlowStarterService;
+import com.gxwebsoft.gxmu.model.DeclareCheckResult;
+import com.gxwebsoft.gxmu.service.DeclareGuardService;
+import org.springframework.transaction.annotation.Transactional;
 import com.gxwebsoft.gxmu.util.GxmuQueryHelper;
 import com.gxwebsoft.gxmu.util.QmgcDocxExportUtil;
 import io.swagger.annotations.Api;
@@ -41,6 +44,8 @@ public class QmgcFormController extends BaseController {
     @Resource
     private ReviewFlowStarterService reviewFlowStarterService;
     @Resource
+    private DeclareGuardService declareGuardService;
+    @Resource
     private FileRecordService fileRecordService;
 
     @Value("${config.upload-path}")
@@ -134,11 +139,21 @@ public class QmgcFormController extends BaseController {
     @OperationLog
     @ApiOperation("添加青马工程培训班学员登记表")
     @PostMapping()
+    @Transactional(rollbackFor = Exception.class)
     public ApiResult<?> save(@RequestBody QmgcForm qmgcForm) {
         User loginUser = getLoginUser();
         if (loginUser != null) {
             qmgcForm.setUserId(loginUser.getUserId());
         }
+        DeclareCheckResult declareCheck = declareGuardService.checkBeforeCreate("gxmu_qmgc_form",
+                qmgcForm.getDeclareId(), qmgcForm.getYear(), qmgcForm.getUserId());
+        if (declareCheck.isRejected()) {
+            return fail(declareCheck.getError());
+        }
+        if (declareCheck.getDeclareId() != null) {
+            qmgcForm.setDeclareId(declareCheck.getDeclareId());
+        }
+        qmgcForm.setDeclareStatus(1);
         if (qmgcFormService.save(qmgcForm)) {
             reviewFlowStarterService.startReview("gxmu_qmgc_form", qmgcForm.getId());
             return success("添加成功");
@@ -187,4 +202,4 @@ public class QmgcFormController extends BaseController {
         }
         return String.valueOf(java.time.LocalDate.now().getYear());
     }
-}
+}