feat: 优化失信记录实体和导入功能

- 调整CreditBreachOfTrust实体中url字段的位置
- 为法院公告导入增加多sheet文件兼容性支持
- 为开庭公告导入增加多sheet文件兼容性支持
- 导入时优先查找指定名称的sheet，如"法院公告"或"开庭公告"
- 当指定sheet不存在时，默认使用第0个sheet进行导入

src/main/java/com/gxwebsoft/credit/controller/CreditCourtAnnouncementController.java

@@ -145,8 +145,10 @@ public class CreditCourtAnnouncementController extends BaseController {
         int successCount = 0;
 
         try {
+            // 兼容多 sheet 文件：优先定位“法院公告”sheet，否则默认第 0 个。
+            int sheetIndex = ExcelImportSupport.findSheetIndex(file, "法院公告", 0);
             ExcelImportSupport.ImportResult<CreditCourtAnnouncementImportParam> importResult = ExcelImportSupport.read(
-                file, CreditCourtAnnouncementImportParam.class, this::isEmptyImportRow);
+                file, CreditCourtAnnouncementImportParam.class, this::isEmptyImportRow, sheetIndex);
             List<CreditCourtAnnouncementImportParam> list = importResult.getData();
             int usedTitleRows = importResult.getTitleRows();
             int usedHeadRows = importResult.getHeadRows();

src/main/java/com/gxwebsoft/credit/controller/CreditCourtSessionController.java

@@ -145,8 +145,10 @@ public class CreditCourtSessionController extends BaseController {
         int successCount = 0;
 
         try {
+            // 兼容多 sheet 文件：优先定位“开庭公告”sheet，否则默认第 0 个。
+            int sheetIndex = ExcelImportSupport.findSheetIndex(file, "开庭公告", 0);
             ExcelImportSupport.ImportResult<CreditCourtSessionImportParam> importResult = ExcelImportSupport.read(
-                file, CreditCourtSessionImportParam.class, this::isEmptyImportRow);
+                file, CreditCourtSessionImportParam.class, this::isEmptyImportRow, sheetIndex);
             List<CreditCourtSessionImportParam> list = importResult.getData();
             int usedTitleRows = importResult.getTitleRows();
             int usedHeadRows = importResult.getHeadRows();

src/main/java/com/gxwebsoft/credit/entity/CreditBreachOfTrust.java

@@ -33,9 +33,6 @@ public class CreditBreachOfTrust implements Serializable {
     @Schema(description = "案号")
     private String caseNumber;
 
-    @Schema(description = "链接地址")
-    private String url;
-
     @Schema(description = "失信被执行人")
     private String plaintiffAppellant;
 
@@ -58,6 +55,9 @@ public class CreditBreachOfTrust implements Serializable {
     @Schema(description = "数据类型")
     private String dataType;
 
+    @Schema(description = "链接地址")
+    private String url;
+
     @Schema(description = "其他当事人/第三人")
     private String otherPartiesThirdParty;