feat(log): 落地统一日志底座与系统日志运维能力

backend/internal/handler/openai_gateway_handler.go

@@ -240,7 +240,7 @@ func (h *OpenAIGatewayHandler) Responses(c *gin.Context) {
 		}
 		account := selection.Account
 		log.Printf("[OpenAI Handler] Selected account: id=%d name=%s", account.ID, account.Name)
-		setOpsSelectedAccount(c, account.ID)
+		setOpsSelectedAccount(c, account.ID, account.Platform)
 
 		// 3. Acquire account concurrency slot
 		accountReleaseFunc := selection.ReleaseFunc