The independent Ladybird browser project has significantly enhanced its memory safety by porting approximately 25,000 lines of its JavaScript engine, LibJS, from C++ to Rust. This critical transition, encompassing components like the lexer, parser, Abstract Syntax Tree (AST), and bytecode generator, was completed in just two weeks. Lead developer Andreas Kling utilized AI tools such as Claude Code and Codex, under human supervision, to accelerate the process. Despite initially rejecting Rust in 2024, the project pragmatically adopted it for its memory safety guarantees, mature ecosystem, and widespread community knowledge, aligning with industry trends. The new Rust implementation passed all 52,898 test262-suite tests and 12,461 Ladybird-specific regression tests, producing byte-identical outputs. Ladybird aims for a Linux and macOS alpha release in 2026.