Worked on the conda/rattler repository to deliver multi-shell activation script support, enabling seamless environment activation across bash, zsh, and fish shells. Focused on cross-platform development using Rust and shell scripting, the work stabilized the initialization process to ensure consistent behavior regardless of shell or operating system. Addressed workspace-wide initialization issues by refining activation logic, which reduced edge-case failures and improved reliability for users with diverse shell preferences. Maintained strong code quality and traceability through clear commit messages and direct linkage to tracked issues. The contribution enhanced the flexibility and usability of rattler for cross-shell and cross-platform workflows.