setup-zellijlisted

## Task Install `zellij` terminal multiplexer and configure each shell profile (PowerShell and WSL bash / zsh) to launch it automatically on startup — replacing any existing herdr autostart block installed by `setup-herdr`. ## Steps ### 1. Check Zellij installation (per environment) **PowerShell:** Run `Get-Command zellij -ErrorAction SilentlyContinue` (or `zellij --version`). **WSL:** Run `wsl -- which zellij` (or `wsl -- zellij --version`). If found in an environment, mark that environment "already installed" and skip to step 3 for it. If not found, continue to step 2 for that environment. --- ### 2. Install Zellij (only after user confirmation) These are system-level installers — always show the exact command and get the user's go-ahead before running it via Bash/PowerShell (same convention `setup-herdr` uses for herdr's own install script). **Windows:** ```powershell winget install --id Zellij.Zellij -e ``` **WSL/Linux:** ```bash sudo apt update && sudo apt install -y zellij ``` > If the distribution doesn't ship `zellij`, install it from Cargo instead: > `cargo install --locked zellij` (or see https://zellij.dev). If the user declines, mark that environment "skipped (declined)" and continue with the other environment. --- ### 3. Configure shell profiles: remove herdr autostart, add Zellij autostart Process the following **four profiles** independently: PowerShell 7 (`$PROFILE`), Windows PowerShell, WSL bash, and WSL zsh (only if zsh is installed). #### 3