alireza0：s-ui JSON 订阅模板是面板参数对象，非 sing-box 配置
alireza0 说明 JSON 订阅模板用于面板组装配置，故 rules/rule_set/final 等位于顶层；表单按扁平结构工作，不打算同时接受嵌套 route 以免不一致，校验仍交给 sing-box check。详见原文。
作者原文@alireza0Thanks for the detailed repro and for confirming the workaround.
The JSON subscription template isn't a sing-box config — it's a settings object the panel uses to build one. That's why the routing keys (rules, rule_set, final, default_domain_resolver) go at the top level: the panel assembles the route section itself. The form in the panel is the intended way to edit it, and it works with that flat structure, so accepting a nested route as well would put the form and the saved template out of sync.
For validation: sing-box check already verifies this correctly and always matches your sing-box version, so I'd rather not ship a second, weaker check in the panel.
The documentation gap is real though — I'll document the expected template structure and the supported keys.
Your workaround is the supported form, so nothing more is needed on your side. Thanks again for the clear report.
