feat: 添加多项功能和修复

功能新增:
- OSS 存储使用情况显示（文件页面）
- OSS 当日流量统计（阿里云云监控API）
- 分享页面路由修复（/s/xxx 格式支持）

Bug修复:
- 修复分享页面资源路径（相对路径改绝对路径）
- 修复分享码获取逻辑（支持路径格式）
- 修复OSS配额undefined显示问题
- 修复登录流程OSS配置检查
- 修复文件数为null时的显示问题

依赖更新:
- 添加 @alicloud/cms20190101 云监控SDK
- 添加 @alicloud/openapi-client

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/node_modules/@alicloud/endpoint-util/dist/client.js

@@ -0,0 +1,32 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+var Client = /** @class */ (function () {
+    function Client() {
+    }
+    Client.getEndpointRules = function (product, regionId, endpointType, network, suffix) {
+        var result;
+        if (network && network.length && network != "public") {
+            network = "-" + network;
+        }
+        else {
+            network = "";
+        }
+        suffix = suffix || "";
+        if (suffix.length) {
+            suffix = "-" + suffix;
+        }
+        if (endpointType == "regional") {
+            if (!regionId || !regionId.length) {
+                throw new Error("RegionId is empty, please set a valid RegionId");
+            }
+            result = "" + product + suffix + network + "." + regionId + ".aliyuncs.com";
+        }
+        else {
+            result = "" + product + suffix + network + ".aliyuncs.com";
+        }
+        return result;
+    };
+    return Client;
+}());
+exports.default = Client;
+//# sourceMappingURL=client.js.map