fix: 修复 OpenAI 路由中的 req.apiKeyData undefined 错误

- 将所有路由中的 req.apiKeyData 改为 req.apiKey（与中间件一致）
- 在 authenticateApiKey 中间件中添加缺失的字段（permissions, geminiAccountId, usage）
- 修复 openaiClaudeRoutes.js、openaiGeminiRoutes.js 和 geminiRoutes.js 中的引用错误
- 确保 API 权限检查正常工作

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

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

src/middleware/auth.js

@@ -198,11 +198,14 @@ const authenticateApiKey = async (req, res, next) => {
       name: validation.keyData.name,
       tokenLimit: validation.keyData.tokenLimit,
       claudeAccountId: validation.keyData.claudeAccountId,
+      geminiAccountId: validation.keyData.geminiAccountId,
+      permissions: validation.keyData.permissions,
       concurrencyLimit: validation.keyData.concurrencyLimit,
       rateLimitWindow: validation.keyData.rateLimitWindow,
       rateLimitRequests: validation.keyData.rateLimitRequests,
       enableModelRestriction: validation.keyData.enableModelRestriction,
-      restrictedModels: validation.keyData.restrictedModels
+      restrictedModels: validation.keyData.restrictedModels,
+      usage: validation.keyData.usage
     };
     req.usage = validation.keyData.usage;