Why https://mui.kernelsu.org/internal/ can only access in webui?

[chunix64]

1. Why https://mui.kernelsu.org/internal/ can only access in webui? What actually is that links? is it fake link?
2. How to develop and debug with that links outside webui? (serve, live-server, vscode, ...)
3. How you develop a module? i'm tired with manual zip and re-install

Edit: After decompiling SukiSU Manager, I figured out that colors.css and related files are dynamically built by Java/Kotlin (android app). But I still need answers for 2 and 3.

[DerGoogler]

The mui.kernelsu.org domain was introduced by the KernelSU team with the new WebUI feature.

/internal/ was is a successor for the /mmrl/ which were both by MMRL introduced.

The /internal/ path is mostly used for internal related features like color.css (which provides the user selected theme) and insets.css (which provides safe area insets).

I personally develop and debug WebUI with a combination of PSH and code-server. Alternatively you can use the Remote URL debug feature.