fix(file): allow standalone legal-person ID upload

file/src/main/java/com/baiyue/file/controller/QualificationFileController.java

@@ -40,7 +40,7 @@ public class QualificationFileController {
             @RequestParam(required = false) LocalDate validTo,
             @RequestParam(defaultValue = "false") boolean replace) {
         long tenantId = merchantTenant(user);
-        qualificationType = QualificationTypes.requireOptional(qualificationType);
+        qualificationType = QualificationTypes.requireSingleUpload(qualificationType);
         var stored = storage.store(tenantId, file);
         try {
             var response = iamClient.submit(internalToken,

file/src/main/java/com/baiyue/file/controller/QualificationTypes.java

@@ -21,11 +21,22 @@ final class QualificationTypes {
         return qualificationType;
     }
 
+    static String requireSingleUpload(String qualificationType) {
+        String type = requireSupported(qualificationType);
+        if ("BUSINESS_LICENSE".equals(type)) {
+            throw new BizException(ResultCode.BAD_REQUEST,
+                    "The business license must be uploaded with its unified social credit code"
+                            + " / 营业执照必须与统一社会信用代码一并上传");
+        }
+        return type;
+    }
+
     static String requireOptional(String qualificationType) {
         String type = requireSupported(qualificationType);
         if ("BUSINESS_LICENSE".equals(type) || "LEGAL_PERSON_ID".equals(type)) {
             throw new BizException(ResultCode.BAD_REQUEST,
-                    "Required qualifications must be uploaded as one package / 营业执照、统一社会信用代码和法人身份证必须整包上传");
+                    "Business license and legal-person ID use the platform qualification package"
+                            + " / 平台端营业执照与法人身份证通过资质包上传");
         }
         return type;
     }