export interface ShellPathProbe {
    /** Absolute path of the shell binary to spawn. */
    shell: string;
    /** `-ic` sources .zshrc/.bashrc; `-lc` sources .zprofile/.bash_profile. */
    flags: '-ic' | '-lc';
}
/**
 * Shell probe ladder for PATH / binary discovery when botmux was launched from
 * the macOS GUI (Finder/Dock) instead of a terminal.
 *
 * GUI-launched apps inherit launchd's minimal PATH, so the desktop app asks the
 * user's shell for the real one. A single `zsh -lc` is not enough:
 *  - `-lc` (login, non-interactive) sources .zprofile but NOT .zshrc — nvm/fnm
 *    and many CLI installers edit only the rc file;
 *  - users whose login shell is bash never had .bash_profile/.bashrc read at all.
 *
 * The ladder probes the user's own `$SHELL` (when it is zsh, bash, or fish) before the
 * macOS default /bin/zsh, and probes `-ic` before `-lc`: a real terminal runs a
 * login+interactive shell where rc-file prepends (nvm's node dir) end up in
 * front of profile entries, so the interactive snapshot is the closer match for
 * PATH ordering. Bounded at ≤4 spawns so a slow rc cannot stall app startup.
 */
export declare function shellPathProbes(env?: NodeJS.ProcessEnv): ShellPathProbe[];
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