feat: 添加多模型支持和OpenAI兼容接口

- 新增 Gemini 模型支持和账户管理功能
- 实现 OpenAI 格式到 Claude/Gemini 的请求转换
- 添加自动 token 刷新服务，支持提前刷新策略
- 增强 Web 管理界面，支持 Gemini 账户管理
- 优化 token 显示，添加掩码功能
- 完善日志记录和错误处理

🤖 Generated with [Claude Code](https://claude.ai/code)

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

src/utils/tokenRefreshLogger.js

@@ -0,0 +1,178 @@
+const winston = require('winston');
+const path = require('path');
+const fs = require('fs');
+const { maskToken, formatTokenRefreshLog } = require('./tokenMask');
+
+// 确保日志目录存在
+const logDir = path.join(process.cwd(), 'logs');
+if (!fs.existsSync(logDir)) {
+  fs.mkdirSync(logDir, { recursive: true });
+}
+
+// 创建专用的 token 刷新日志记录器
+const tokenRefreshLogger = winston.createLogger({
+  level: 'info',
+  format: winston.format.combine(
+    winston.format.timestamp({
+      format: 'YYYY-MM-DD HH:mm:ss.SSS'
+    }),
+    winston.format.json(),
+    winston.format.printf(info => {
+      return JSON.stringify(info, null, 2);
+    })
+  ),
+  transports: [
+    // 文件传输 - 每日轮转
+    new winston.transports.File({
+      filename: path.join(logDir, 'token-refresh.log'),
+      maxsize: 10 * 1024 * 1024, // 10MB
+      maxFiles: 30, // 保留30天
+      tailable: true
+    }),
+    // 错误单独记录
+    new winston.transports.File({
+      filename: path.join(logDir, 'token-refresh-error.log'),
+      level: 'error',
+      maxsize: 10 * 1024 * 1024,
+      maxFiles: 30
+    })
+  ],
+  // 错误处理
+  exitOnError: false
+});
+
+// 在开发环境添加控制台输出
+if (process.env.NODE_ENV !== 'production') {
+  tokenRefreshLogger.add(new winston.transports.Console({
+    format: winston.format.combine(
+      winston.format.colorize(),
+      winston.format.simple()
+    )
+  }));
+}
+
+/**
+ * 记录 token 刷新开始
+ */
+function logRefreshStart(accountId, accountName, platform = 'claude', reason = '') {
+  tokenRefreshLogger.info({
+    event: 'token_refresh_start',
+    accountId,
+    accountName,
+    platform,
+    reason,
+    timestamp: new Date().toISOString()
+  });
+}
+
+/**
+ * 记录 token 刷新成功
+ */
+function logRefreshSuccess(accountId, accountName, platform = 'claude', tokenData = {}) {
+  const maskedTokenData = {
+    accessToken: tokenData.accessToken ? maskToken(tokenData.accessToken) : '[NOT_PROVIDED]',
+    refreshToken: tokenData.refreshToken ? maskToken(tokenData.refreshToken) : '[NOT_PROVIDED]',
+    expiresAt: tokenData.expiresAt || tokenData.expiry_date || '[NOT_PROVIDED]',
+    scopes: tokenData.scopes || tokenData.scope || '[NOT_PROVIDED]'
+  };
+
+  tokenRefreshLogger.info({
+    event: 'token_refresh_success',
+    accountId,
+    accountName,
+    platform,
+    tokenData: maskedTokenData,
+    timestamp: new Date().toISOString()
+  });
+}
+
+/**
+ * 记录 token 刷新失败
+ */
+function logRefreshError(accountId, accountName, platform = 'claude', error, attemptNumber = 1) {
+  const errorInfo = {
+    message: error.message || error.toString(),
+    code: error.code || 'UNKNOWN',
+    statusCode: error.response?.status || 'N/A',
+    responseData: error.response?.data || 'N/A'
+  };
+
+  tokenRefreshLogger.error({
+    event: 'token_refresh_error',
+    accountId,
+    accountName,
+    platform,
+    error: errorInfo,
+    attemptNumber,
+    timestamp: new Date().toISOString()
+  });
+}
+
+/**
+ * 记录 token 刷新跳过（由于并发锁）
+ */
+function logRefreshSkipped(accountId, accountName, platform = 'claude', reason = 'locked') {
+  tokenRefreshLogger.info({
+    event: 'token_refresh_skipped',
+    accountId,
+    accountName,
+    platform,
+    reason,
+    timestamp: new Date().toISOString()
+  });
+}
+
+/**
+ * 记录 token 使用情况
+ */
+function logTokenUsage(accountId, accountName, platform = 'claude', expiresAt, isExpired) {
+  tokenRefreshLogger.debug({
+    event: 'token_usage_check',
+    accountId,
+    accountName,
+    platform,
+    expiresAt,
+    isExpired,
+    remainingMinutes: expiresAt ? Math.floor((new Date(expiresAt) - Date.now()) / 60000) : 'N/A',
+    timestamp: new Date().toISOString()
+  });
+}
+
+/**
+ * 记录批量刷新任务
+ */
+function logBatchRefreshStart(totalAccounts, platform = 'all') {
+  tokenRefreshLogger.info({
+    event: 'batch_refresh_start',
+    totalAccounts,
+    platform,
+    timestamp: new Date().toISOString()
+  });
+}
+
+/**
+ * 记录批量刷新结果
+ */
+function logBatchRefreshComplete(results) {
+  tokenRefreshLogger.info({
+    event: 'batch_refresh_complete',
+    results: {
+      total: results.total || 0,
+      success: results.success || 0,
+      failed: results.failed || 0,
+      skipped: results.skipped || 0
+    },
+    timestamp: new Date().toISOString()
+  });
+}
+
+module.exports = {
+  logger: tokenRefreshLogger,
+  logRefreshStart,
+  logRefreshSuccess,
+  logRefreshError,
+  logRefreshSkipped,
+  logTokenUsage,
+  logBatchRefreshStart,
+  logBatchRefreshComplete
+};