fix: 修复分组调度功能和API Keys统计弹窗UI问题

1. 分组调度功能修复：
   - 统一使用 unifiedClaudeScheduler 和 unifiedGeminiScheduler
   - 修复 schedulable 字段数据类型不一致问题（布尔值/字符串）
   - 添加 _isSchedulable() 辅助方法确保兼容性
   - 修复所有路由文件中的调度器调用

2. API Keys 统计弹窗UI优化：
   - 统一弹窗样式与系统UI风格
   - 添加右上角关闭按钮
   - 修复移动端宽度问题（设置为95%屏幕宽度）
   - 使用 Teleport 组件和项目通用样式

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

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

src/routes/openaiClaudeRoutes.js

@@ -12,7 +12,7 @@ const { authenticateApiKey } = require('../middleware/auth');
 const claudeRelayService = require('../services/claudeRelayService');
 const openaiToClaude = require('../services/openaiToClaude');
 const apiKeyService = require('../services/apiKeyService');
-const claudeAccountService = require('../services/claudeAccountService');
+const unifiedClaudeScheduler = require('../services/unifiedClaudeScheduler');
 const claudeCodeHeadersService = require('../services/claudeCodeHeadersService');
 const sessionHelper = require('../utils/sessionHelper');
 
@@ -206,7 +206,8 @@ async function handleChatCompletion(req, res, apiKeyData) {
     const sessionHash = sessionHelper.generateSessionHash(claudeRequest);
     
     // 选择可用的Claude账户
-    const accountId = await claudeAccountService.selectAccountForApiKey(apiKeyData, sessionHash);
+    const accountSelection = await unifiedClaudeScheduler.selectAccountForApiKey(apiKeyData, sessionHash, claudeRequest.model);
+    const accountId = accountSelection.accountId;
     
     // 获取该账号存储的 Claude Code headers
     const claudeCodeHeaders = await claudeCodeHeadersService.getAccountHeaders(accountId);