Boltr is a Rust-first protein structure prediction system designed to run Boltz/Boltz2-style workflows with stronger performance, safety, and portability than a Python-heavy stack. It takes structured protein inputs such as YAML, runs inference through a Rust + LibTorch/CUDA pipeline, and outputs files like .cif/.pdb, metadata JSON, and .a3m alignments for downstream visualization and analysis in tools like PyMOL. This program is a key component of the larger project(s) stellarOS and nucleogenesis.