#!/usr/bin/env bash set -euo pipefail usage() {    echo "Usage: $0 [local|all] [--help]"    echo "  local  Only check local links (default)"    echo "  all    Check all links including remote ones"    exit 1} check_mode="local"if [ $# -eq 1 ]; then    case "$1" in    "local") check_mode="local" ;;    "all") check_mode="all" ;;    "--help") usage ;;    *) echo "Invalid argument: $1" && usage ;;    esacelse    usagefi cargo install lycheecd "$(dirname "$0")/.." if [ "$check_mode" = "all" ]; then    lychee --no-progress './docs/src/**/*'else    lychee --exclude '^http' './docs/src/**/*'fi#