Add Rust rewrite of FQL codebase#239

janderland wants to merge 3 commits intomainjanderland/fql:mainfrom

claude/rewrite-go-to-rust-011CUwkDUj88Tmrjg1m6Tjkcjanderland/fql:claude/rewrite-go-to-rust-011CUwkDUj88Tmrjg1m6TjkcCopy head branch name to clipboard