Also i think devs need better manual for adding modules in wiki or readme or on site.

When I fork repo I should only edit .gitmodules or also use command like
git submodule update

?
It's not clear.

Please add only "serious" modules, because the repository used junior programmers.

I don't want to exclude modules based on a subjective assessment of code quality. I would be open to some sort of automated analysis to confirm that a module is compatible with a certain version of Kohana, however.

Also i think devs need better manual for adding modules in wiki or readme or on site.

I agree that kohana-modules.com needs better documentation regarding how to submit a module. I usually run git submodule add https://github.com/kohana/auth.git, for example, if I wanted to add the auth module to a branch. Here's the page that should be edited if anyone wants to submit a pull request:

Add a Module (Source in GitHub)

I'm closing this issue, but I'm open to a pull request for improving the "Add a Module" page.

If you close this issue - no one can see the existed problem and the problem gonna became forgotten..

That's fair, reopening until the documentation issue is resolved.