They got merged a few hours ago

It’s already back. It was added a few weeks ago: https://pointieststick.com/2023/10/27/these-past-2-weeks-in-kde-wayland-color-management-the-desktop-cube-returns-and-optional-shadows-in-spectacle/

Try using just Termux. You can actually do a lot with it, even without installing a distro. If you want Debian though, one approach would be through proot-distro which installs a traditional distro in the Termux environment. It has some limitations, check the wiki page.

There’s also Sharedown if you want a GUI