统一领取流：Step1 填 UID，按平台分叉履约

领取页改为统一 UID 入口；lewan 强制角色 ID 匹配后才发货核销，feifei 将 uid 拼入 H5 并去掉 claim 短链，对外仍返回本站 claimUrl。

apps/backend/src/db/migrate.ts

@@ -83,11 +83,18 @@ function assertMigrationFilesOrdered() {
 
   const versions = files.map((name) => Number(name.slice(0, 3)))
   for (let index = 1; index < versions.length; index += 1) {
-    if (versions[index] < versions[index - 1]) {
-      throw new Error(`迁移序号乱序: ${files[index - 1]} 之后出现 ${files[index]}`)
+    const current = versions[index]
+    const previous = versions[index - 1]
+    const currentFile = files[index]
+    const previousFile = files[index - 1]
+    if (current === undefined || previous === undefined || !currentFile || !previousFile) {
+      continue
     }
-    if (versions[index] === versions[index - 1]) {
-      throw new Error(`迁移序号重复: ${files[index - 1]} 与 ${files[index]}`)
+    if (current < previous) {
+      throw new Error(`迁移序号乱序: ${previousFile} 之后出现 ${currentFile}`)
+    }
+    if (current === previous) {
+      throw new Error(`迁移序号重复: ${previousFile} 与 ${currentFile}`)
     }
   }