fix: 更新多云账单同步说明

- 展示当前支持的五个云厂商
- 统一多云出账时效与只读权限提示

frontend/src/components/cloud/CloudBilling.tsx

@@ -97,7 +97,7 @@ export function CloudBilling() {
     if (activeTab === 'alerts') loadRules();
   };
 
-  // 从云账号 AK 同步昨日账单（当前支持阿里云） // Logan.Li
+  // 从活跃云账号同步各厂商昨日账单。 // Logan.Li
   const handleSyncYesterday = async () => {
     setSyncing(true);
     try {

frontend/src/locales/en-US.json

@@ -7208,11 +7208,11 @@
     "syncBilling": "Sync Billing",
     "syncBillingFailed": "Billing sync failed",
     "syncBillingHint": "Pull yesterday's bill from cloud accounts with AK configured",
-    "syncBillingInfo": "Sync pulls bills from active cloud accounts (product + region). Aliyun supported now.",
+    "syncBillingInfo": "Sync pulls bills from active cloud accounts by service and region. Aliyun, Tencent Cloud, AWS, Huawei Cloud, and Azure are supported.",
     "syncBillingPartial": "Some accounts failed to sync",
     "syncBillingResult": "{{date}}: {{created}} created, {{updated}} updated",
     "syncBillingSuccess": "Billing sync succeeded",
-    "syncBillingTiming": "Billing latency: Aliyun daily bills are usually T+1 (sync yesterday after 10:00 today). Postpaid hourly products may lag ~1 day. AK needs bss:DescribeBillList.",
+    "syncBillingTiming": "Daily bills are typically available on T+1. Sync yesterday's data after 10:00 and grant read-only billing or cost-management access for the provider.",
     "syncFailed": "Sync failed",
     "syncRegions": "Sync Regions",
     "syncRegionsFailed": "Region sync failed",

frontend/src/locales/zh-CN.json

@@ -7208,11 +7208,11 @@
     "syncBilling": "同步账单",
     "syncBillingFailed": "账单同步失败",
     "syncBillingHint": "从已配置 AK 的云账号拉取昨日账单",
-    "syncBillingInfo": "点击「同步昨日」将从多云账号中的活跃账号自动拉取账单，按产品+地域写入成本记录。当前支持阿里云。",
+    "syncBillingInfo": "点击「同步昨日」将从活跃云账号拉取账单，按产品和地域写入成本记录。当前支持阿里云、腾讯云、AWS、华为云和 Azure。",
     "syncBillingPartial": "部分账号同步失败",
     "syncBillingResult": "{{date}} 新增 {{created}} 条，更新 {{updated}} 条",
     "syncBillingSuccess": "账单同步成功",
-    "syncBillingTiming": "出账时效：阿里云日账单通常 T+1 生成（昨日账单建议今日 10:00 后同步）；预付费订单可能当日可见，后付费按小时计费产品延迟 1 天。AK 需具备 bss:DescribeBillList 权限。",
+    "syncBillingTiming": "各厂商账单通常在 T+1 生成，建议每日 10:00 后同步昨日数据。账号需具备对应厂商的账单只读或成本管理读取权限。",
     "syncFailed": "同步失败",
     "syncRegions": "同步区域",
     "syncRegionsFailed": "区域同步失败",