chore(金币代理): 修复失败提示显示

src/views/RechargeAgency/index.vue

@@ -607,11 +607,20 @@ const rechargeNow = useThrottle(async () => {
       // 重置表单
       rechargeAmount.value = ''
     } else {
-      showError(t('transfer_coin_failed'))
+      showError(
+        t('transfer_coin_failed', {
+          amount: amount,
+        }),
+      )
     }
   } catch (error) {
     console.error('币商充值金币失败:', error)
-    showError(t('transfer_coin_failed'))
+    showError(
+      error.response.errorMsg ||
+        t('transfer_coin_failed', {
+          amount: amount,
+        }),
+    )
   } finally {
     isRecharging.value = false
   }