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/credentials/dist/src/credentials.js

@@ -0,0 +1,38 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.CredentialsBuilder = void 0;
+class Credentials {
+    constructor(builder) {
+        this.accessKeyId = builder.accessKeyId;
+        this.accessKeySecret = builder.accessKeySecret;
+        this.securityToken = builder.securityToken;
+        this.providerName = builder.providerName;
+    }
+    static builder() {
+        return new CredentialsBuilder();
+    }
+}
+exports.default = Credentials;
+class CredentialsBuilder {
+    withAccessKeyId(value) {
+        this.accessKeyId = value;
+        return this;
+    }
+    withAccessKeySecret(value) {
+        this.accessKeySecret = value;
+        return this;
+    }
+    withSecurityToken(value) {
+        this.securityToken = value;
+        return this;
+    }
+    withProviderName(value) {
+        this.providerName = value;
+        return this;
+    }
+    build() {
+        return new Credentials(this);
+    }
+}
+exports.CredentialsBuilder = CredentialsBuilder;
+//# sourceMappingURL=credentials.js.map