fix(aspect+e2e): make tests truthful + ums-mcp Mutex + install Elixir (unblocks #149)#150

hyperpolymath merged 3 commits into

mainhyperpolymath/boj-server:mainfrom

fix/boj-server-aspect-baseline-rothyperpolymath/boj-server:fix/boj-server-aspect-baseline-rotCopy head branch name to clipboard