Adélie Linux Saves the Day: RISC-V Rebuilds on Milk-V Pioneer

Facing infrastructure challenges, the decision to drop RISC-V repositories was reversed thanks to Zach van Rijn of Adélie Linux, who provided access to a Milk-V Pioneer machine. A full world rebuild was completed on this machine, resulting in new, tested repositories. While performance isn't quite on par with Cortex-A72 (closer to Cortex-A55), build times are acceptable for most projects (though Rust builds remain slow). The new repositories are comparable to LoongArch64, including tests. This solution is provisional and future support will depend on ongoing performance and stability.