Add fish shell support and fix PATH handling for Claude#1

vncntt wants to merge 2 commits intopipmc:mainpipmc/claude-code-into-devcontainer:mainfrom

vncntt:fix/fish-shell-and-path-handlingvncntt/claude-code-into-devcontainer:fix/fish-shell-and-path-handlingCopy head branch name to clipboard