优化登录逻辑的实现，将认证请求和token验证的处理分成两个逻辑文件。新增交叉评查任务列表的页面（尚未对接真实数据）。

app/api/login/token-manager.server.ts

@@ -0,0 +1,154 @@
+/**
+ * Token管理服务
+ * 负责处理OAuth访问令牌的刷新和管理
+ * 如果需要添加新的Token相关功能：
+ * 1. 优先考虑在 `TokenManager` 中添加
+ * 2. 如果需要新的网络请求，在 `OAuthClient` 中添加
+ */
+import { OAuthClient } from "./oauth-client";
+import { OAUTH_CONFIG } from "~/config/api-config";
+
+interface TokenInfo {
+  accessToken: string;
+  refreshToken: string;
+  tokenIssuedAt: number;
+  tokenExpiresIn: number;
+}
+
+interface RefreshResult {
+  success: boolean;
+  newTokenInfo?: TokenInfo;
+  error?: string;
+}
+
+/**
+ * Token管理服务
+ * 负责处理OAuth访问令牌的刷新和管理
+ */
+export class TokenManager {
+  private oauthClient: OAuthClient;
+
+  constructor() {
+    this.oauthClient = new OAuthClient(OAUTH_CONFIG);
+  }
+
+  /**
+   * 检查token是否过期
+   */
+  isTokenExpired(tokenInfo: TokenInfo): boolean {
+    const now = Date.now();
+    const expiresAt = tokenInfo.tokenIssuedAt + (tokenInfo.tokenExpiresIn * 1000);
+    return now >= expiresAt;
+  }
+
+  /**
+   * 检查token是否需要刷新（提前5分钟）
+   */
+  shouldRefreshToken(tokenInfo: TokenInfo, refreshThresholdMinutes: number = 5): boolean {
+    const now = Date.now();
+    const expiresAt = tokenInfo.tokenIssuedAt + (tokenInfo.tokenExpiresIn * 1000);
+    const refreshThreshold = refreshThresholdMinutes * 60 * 1000;
+    return now >= (expiresAt - refreshThreshold);
+  }
+
+  /**
+   * 获取token剩余有效时间（秒）
+   */
+  getTokenRemainingTime(tokenInfo: TokenInfo): number {
+    const now = Date.now();
+    const expiresAt = tokenInfo.tokenIssuedAt + (tokenInfo.tokenExpiresIn * 1000);
+    return Math.floor((expiresAt - now) / 1000);
+  }
+
+  /**
+   * 刷新访问令牌
+   */
+  async refreshToken(refreshToken: string): Promise<RefreshResult> {
+    try {
+      console.log("开始刷新访问令牌...");
+      
+      const newTokenResponse = await this.oauthClient.refreshAccessToken(refreshToken);
+      
+      if (!newTokenResponse) {
+        console.error("刷新令牌失败：服务器返回空响应");
+        return {
+          success: false,
+          error: "服务器返回空响应"
+        };
+      }
+
+      const newTokenInfo: TokenInfo = {
+        accessToken: newTokenResponse.access_token,
+        refreshToken: newTokenResponse.refresh_token,
+        tokenIssuedAt: Date.now(),
+        tokenExpiresIn: newTokenResponse.expires_in
+      };
+
+      console.log(`令牌刷新成功，新令牌有效期: ${newTokenResponse.expires_in}秒`);
+
+      return {
+        success: true,
+        newTokenInfo
+      };
+
+    } catch (error) {
+      console.error("刷新令牌时发生错误:", error);
+      return {
+        success: false,
+        error: error instanceof Error ? error.message : "未知错误"
+      };
+    }
+  }
+
+  /**
+   * 检查并自动刷新token（如果需要）
+   */
+  async checkAndRefreshToken(tokenInfo: TokenInfo): Promise<RefreshResult> {
+    // 如果token已过期，必须刷新
+    if (this.isTokenExpired(tokenInfo)) {
+      console.log("Token已过期，尝试刷新...");
+      return this.refreshToken(tokenInfo.refreshToken);
+    }
+
+    // 如果token即将过期，主动刷新
+    if (this.shouldRefreshToken(tokenInfo)) {
+      const remainingTime = this.getTokenRemainingTime(tokenInfo);
+      console.log(`Token将在${remainingTime}秒后过期，主动刷新...`);
+      return this.refreshToken(tokenInfo.refreshToken);
+    }
+
+    // Token仍然有效，无需刷新
+    return {
+      success: true,
+      newTokenInfo: tokenInfo
+    };
+  }
+
+  /**
+   * 格式化token到期时间
+   */
+  formatTokenExpiry(tokenInfo: TokenInfo): string {
+    const expiresAt = new Date(tokenInfo.tokenIssuedAt + (tokenInfo.tokenExpiresIn * 1000));
+    return expiresAt.toLocaleString('zh-CN');
+  }
+
+  /**
+   * 获取token状态信息（用于调试）
+   */
+  getTokenStatus(tokenInfo: TokenInfo): {
+    isExpired: boolean;
+    shouldRefresh: boolean;
+    remainingTime: number;
+    expiryTime: string;
+  } {
+    return {
+      isExpired: this.isTokenExpired(tokenInfo),
+      shouldRefresh: this.shouldRefreshToken(tokenInfo),
+      remainingTime: this.getTokenRemainingTime(tokenInfo),
+      expiryTime: this.formatTokenExpiry(tokenInfo)
+    };
+  }
+}
+
+// 导出单例实例
+export const tokenManager = new TokenManager();