AppImage exports ARGV0 into the process environment. zsh treats that as argv[0] for every external command, which broke Python venv detection in the integrated terminal and managed OpenCode sessions. Clear ARGV0 in Electron before login-shell probing, refuse to re-apply it from shell snapshots, and strip it from terminal PTY and managed OpenCode launch environments. Co-authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>