Add complete Elixir implementation of FQL#238

janderland wants to merge 3 commits intomainjanderland/fql:mainfrom

claude/rewrite-go-to-elixir-011CUwkTcPszf7ovbnxaCvtHjanderland/fql:claude/rewrite-go-to-elixir-011CUwkTcPszf7ovbnxaCvtHCopy head branch name to clipboard