兼容旧草稿避免项目信息被清空

frontend/src/views/admin/ProjectDetail.vue

@@ -4009,6 +4009,9 @@ const isProjectPublishSnapshotShape = (value: unknown): value is ProjectPublishS
   );
 };
 
+const isProjectPublishSnapshotEmpty = (snapshot: ProjectPublishSnapshot): boolean =>
+  JSON.stringify(snapshot) === JSON.stringify(emptyProjectInfoDraft());
+
 const applyProjectInfoDraft = (snapshot: ProjectPublishSnapshot) => {
   suppressEnrollmentFieldSync.value = true;
   form.value.code = snapshot.code || "";
@@ -4044,7 +4047,11 @@ const applySetupDraft = (draft: SetupConfigDraft) => {
   setupDraft.siteEnrollmentPlans = normalizeSiteEnrollmentPlans(clone(draft.siteEnrollmentPlans));
   setupDraft.monitoringStrategies = clone(draft.monitoringStrategies);
   setupDraft.centerConfirm = clone(draft.centerConfirm);
-  applyProjectInfoDraft(projectInfo);
+  if (!isProjectPublishSnapshotEmpty(projectInfo) || isSetupDraftEffectivelyEmpty(setupDraft)) {
+    applyProjectInfoDraft(projectInfo);
+  } else {
+    setupDraft.projectInfo = buildProjectPublishSnapshot();
+  }
   formBaselineSnapshot.value = serializeFormForCompare();
   suppressDraftWatch.value = false;
 };