Function dir_exists

src/cli/cli.c:2317–2324

/* ── Agent detection ──────────────────────────────────────────── */

static bool dir_exists(const char *path) {
    struct stat st;
#ifndef _WIN32
    return lstat(path, &st) == 0 && S_ISDIR(st.st_mode);
#else
    return stat(path, &st) == 0 && S_ISDIR(st.st_mode);
#endif
}

/* Resolve the Claude Code config dir.
 * Honors $CLAUDE_CONFIG_DIR; falls back to "$home_dir/.claude". */