feat: 完成P6-P8前端能力闭环（V3,D2,D3,B3）

client/src/api/errorMessages.ts

@@ -114,6 +114,35 @@ export function mapApiErrorMessage(
     if (details?.ocr === "disabled") {
       return "当前环境未开启 OCR，请联系管理员或切换到 mock/tencent。";
     }
+
+
+    if (details?.verification === "disabled") {
+      return "当前环境未开启发票验真。";
+    }
+
+    if (details?.verification === "already_pending") {
+      return "已有验真任务正在处理中，请稍后查看结果。";
+    }
+
+    if (details?.verification === "too_frequent") {
+      return "验真触发过于频繁，请稍后重试。";
+    }
+
+    if (details?.verification === "attempts_exceeded") {
+      return "验真重试次数已达上限，请联系财务人工核验。";
+    }
+
+    if (details?.budget === "exceeded_block_mode") {
+      return "当前报销金额超出预算，系统已阻断提交。";
+    }
+
+    if (details?.integration === "erp_sync_disabled") {
+      return "ERP 同步功能未开启。";
+    }
+
+    if (details?.integration === "travel_sync_disabled") {
+      return "差旅同步功能未开启。";
+    }
   }
 
   return fallbackMessage || "请求失败，请稍后重试。";