feat(admin): 店铺重复检查导出「站点」列改「国家」中文显示；撞款抽屉按点击处定位

- 导出 CSV 列头 站点→国家，值映射中文（DE德国/UK英国/FR法国/IT意大利/ES西班牙，未知回退原值）
- 撞款详情抽屉以触发元素为垂直锚点并钳制在视口内，不再贴区块/页面顶部导致看不见需上滑
- 同步 Java 静态托管副本；更新 Java/Python 相关断言

backend-java/src/main/java/com/nanri/aiimage/modules/shopduplicatecheck/service/ShopDataDuplicateCheckQueryService.java

@@ -183,13 +183,13 @@ public class ShopDataDuplicateCheckQueryService {
         List<DuplicateItem> cropped = cropItems(view.payload().items(), visibleKeys);
         List<DuplicateItem> matched = filterItems(cropped, monitor, filters);
         List<List<String>> rows = new ArrayList<>();
-        rows.add(List.of("ASIN", "店铺数", "店铺", "分组", "站点", "上架时间", "价格", "品牌"));
+        rows.add(List.of("ASIN", "店铺数", "店铺", "分组", "国家", "上架时间", "价格", "品牌"));
         List<Object[]> flat = new ArrayList<>();
         for (DuplicateItem item : matched) {
             String shopCount = String.valueOf(item.shopCount());
             for (DuplicateOccurrence occ : item.occurrences()) {
                 flat.add(new Object[]{item.asin(), shopCount, occ.shopName(), occ.groupName(),
-                        effectiveSite(occ), safe(occ.date()), safe(occ.price()), safe(occ.brand())});
+                        effectiveCountryCn(occ), safe(occ.date()), safe(occ.price()), safe(occ.brand())});
             }
         }
         flat.sort(flatExportComparator());
@@ -358,9 +358,18 @@ public class ShopDataDuplicateCheckQueryService {
                 source == null ? "" : source);
     }
 
-    private String effectiveSite(DuplicateOccurrence occ) {
+    /** 站点代码 → 中文国家名（导出「国家」列，与页面 DUP_SITE_LABELS 一致），未识别回退原值。 */
+    private static final Map<String, String> SITE_CN_LABELS = Map.of(
+            "DE", "德国", "UK", "英国", "FR", "法国", "IT", "意大利", "ES", "西班牙");
+
+    private static String siteCnLabel(String code) {
+        String key = safe(code).trim().toUpperCase(Locale.ROOT);
+        return SITE_CN_LABELS.containsKey(key) ? SITE_CN_LABELS.get(key) : safe(code);
+    }
+
+    private String effectiveCountryCn(DuplicateOccurrence occ) {
         if (!safe(occ.country()).isEmpty()) {
-            return occ.country().toUpperCase(Locale.ROOT);
+            return siteCnLabel(occ.country());
         }
         List<String> codes = occ.countryCodes() == null ? List.of() : occ.countryCodes();
         if (codes.isEmpty()) {
@@ -371,7 +380,7 @@ public class ShopDataDuplicateCheckQueryService {
             if (sb.length() > 0) {
                 sb.append('、');
             }
-            sb.append(safe(code).toUpperCase(Locale.ROOT));
+            sb.append(siteCnLabel(code));
         }
         return sb.toString();
     }