From 673caf41a02946a6562848f0b887ffdeeed39e8c Mon Sep 17 00:00:00 2001
From: Zero Clover <zero@root.me>
Date: Mon, 2 Feb 2026 18:50:54 +0800
Subject: [PATCH] =?UTF-8?q?feat(ops):=20=E5=B0=86=20USER=5FINACTIVE=20?=
 =?UTF-8?q?=E9=94=99=E8=AF=AF=E6=8E=92=E9=99=A4=E5=9C=A8=20SLA=20=E7=BB=9F?=
 =?UTF-8?q?=E8=AE=A1=E4=B9=8B=E5=A4=96?=
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将账户停用 (USER_INACTIVE) 导致的请求失败视为业务限制类错误，不计入 SLA 和错误率统计。

账户停用是预期内的业务结果，不应被视为系统错误或服务质量问题。此改动使错误分类更加准确，避免将预期的业务限制误报为系统故障。

修改内容：
- 在 classifyOpsIsBusinessLimited 函数中添加 USER_INACTIVE 错误码
- 该类错误不再触发错误率告警

Fixes Wei-Shaw/sub2api#453
---
 backend/internal/handler/ops_error_logger.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/backend/internal/handler/ops_error_logger.go b/backend/internal/handler/ops_error_logger.go
index f62e6b3e..4dc0a9cc 100644
--- a/backend/internal/handler/ops_error_logger.go
+++ b/backend/internal/handler/ops_error_logger.go
@@ -905,7 +905,7 @@ func classifyOpsIsRetryable(errType string, statusCode int) bool {
 
 func classifyOpsIsBusinessLimited(errType, phase, code string, status int, message string) bool {
 	switch strings.TrimSpace(code) {
-	case "INSUFFICIENT_BALANCE", "USAGE_LIMIT_EXCEEDED", "SUBSCRIPTION_NOT_FOUND", "SUBSCRIPTION_INVALID":
+	case "INSUFFICIENT_BALANCE", "USAGE_LIMIT_EXCEEDED", "SUBSCRIPTION_NOT_FOUND", "SUBSCRIPTION_INVALID", "USER_INACTIVE":
 		return true
 	}
 	if phase == "billing" || phase == "concurrency" {