feat(oauth): 允许替换已失效的活跃 OAuth 账号并同步 status_snapshot

- 活跃但 token 已过期或刷新失败的重复账号视为可替换
- 清除失效标记、刷新配额时同步更新 status_snapshot.oauth
- oauth_invalid 清除接口同时识别 invalid_at 与 invalid_reason 两种标记
- 批量导入任务状态区分 created_count / replaced_count，前端据此展示新增/替换统计
- 补充重复替换场景的集成测试，用量测试等待超时从 10s 提升到 30s 以适应并行压力

apps/aether-gateway/src/handlers/admin/provider/oauth/quota/shared.rs

@@ -2,7 +2,9 @@ use crate::handlers::admin::provider::shared::payloads::{
     OAUTH_ACCOUNT_BLOCK_PREFIX, OAUTH_REFRESH_FAILED_PREFIX,
 };
 use crate::handlers::admin::request::{AdminAppState, AdminGatewayProviderTransportSnapshot};
-use crate::handlers::shared::sync_provider_key_quota_status_snapshot;
+use crate::handlers::shared::{
+    sync_provider_key_oauth_status_snapshot, sync_provider_key_quota_status_snapshot,
+};
 use crate::GatewayError;
 use aether_admin::provider::quota as admin_provider_quota_pure;
 use aether_contracts::{ExecutionPlan, ExecutionResult, ExecutionTimeouts, ProxySnapshot};
@@ -146,6 +148,8 @@ pub(crate) async fn persist_provider_quota_refresh_state(
             "refresh_api",
         );
     }
+    latest_key.status_snapshot =
+        sync_provider_key_oauth_status_snapshot(latest_key.status_snapshot.as_ref(), &latest_key);
     latest_key.updated_at_unix_secs = SystemTime::now()
         .duration_since(UNIX_EPOCH)
         .ok()