fix: Interactive checkbox menu: arrow keys to move, Space to select, Enter to run

Falls back to the numbered prompt when input is not a terminal, so
scripted test runs keep working.

AGENTS.md

@@ -109,7 +109,8 @@ shellcheck -S warning setup-gamescope-boot.sh lib/*.sh   # if available
 Behaviour is verified in a CachyOS QEMU/KVM test VM. The VM scripts and a
 Claude Code skill describing the whole test workflow (snapshots, SSH, running
 the wizard with scripted menu input such as `printf '2\n\ny\nn\n'`, the
-per-component checks, reboot checks, the full test matrix, `--fremont` to
+per-component checks; when stdin is not a terminal the menu falls back to a
+numbered prompt, which is what scripted runs use, reboot checks, the full test matrix, `--fremont` to
 fake Steam Machine hardware) live in
 [cachyos-gamescope-boot-dev-env](https://github.com/theupriser/cachyos-gamescope-boot-dev-env).
 Gamescope itself and the real LED bar can only be verified on hardware.

README.md

@@ -43,24 +43,24 @@ cd <this-repo>
 ./setup-gamescope-boot.sh
 ```
 
-Run it as yourself, not as root. You'll see a menu like this:
+Run it as yourself, not as root. You'll see a checklist:
 
 ```
-  #   Now    Want   Component
-  1   off    [x]    SteamOS conversion: boot into gaming mode, Steam on the desktop
-  2   off    [x]    Install SteamOS theme: Vapor look, dark mode, SteamOS taskbar
-  3   off    [x]    Install Steam Deck/Machine icons: Deck button icons in gaming mode
-  4   off    [x]    Single user mode: no password, lock screen or log out (SDDM)
+   [x] SteamOS conversion: boot into gaming mode, Steam on the desktop  (now: off)
+ > [x] Install SteamOS theme: Vapor look, dark mode, SteamOS taskbar  (now: off)
+   [x] Install Steam Deck/Machine icons: Deck button icons in gaming mode  (now: off)
+   [x] Single user mode: no password, lock screen or log out (SDDM)  (now: off)
+
+  Up/Down move   Space select   Enter run   a run + re-apply what's on   q quit
 ```
 
-**Now** shows what's on at the moment, **Want** what you'd like. Type a
-number and press Enter to tick or untick it, then press Enter on an empty
-line to continue. The wizard shows what it will change, asks your password
-once, and at the end offers to restart (needed for changes to how the PC
-starts).
+Move with the **arrow keys**, tick or untick with **Space**, and press
+**Enter** to run. "now:" shows what's on at the moment. The wizard then
+shows what it will change, asks your password once, and at the end offers
+to restart (needed for changes to how the PC starts).
 
 Run it again whenever you like - to change your choices, to turn things off
-again, or after a CachyOS update (type `a` in the menu to re-apply
+again, or after a CachyOS update (press `a` in the menu to re-apply
 everything that's on).
 
 Keep the whole folder: the script needs the files in `lib/` next to it.

lib/menu.sh

@@ -59,12 +59,71 @@ show_menu() {
 }
 
 run_menu() {
-    # Sets REAPPLY. Returns 1 if the user quit.
+    # Sets REAPPLY. Returns 1 if the user quit. A checkbox list on a
+    # terminal; a plain numbered prompt when input is piped (scripted runs).
     REAPPLY=false
+    if [[ -t 0 && -t 1 ]]; then
+        run_menu_tui
+    else
+        run_menu_lines
+    fi
+}
+
+draw_menu_tui() {
+    local cursor="$1" i=0 c box state line
+    printf '\033[H\033[2J'
+    echo -e "${c_bold}CachyOS Steam Deck-style Gamescope Boot Wizard${c_reset}"
+    echo "Pick what you want. Anything you untick is put back the way it was."
+    echo
+    MENU_ITEMS=()
+    for c in "${COMPONENTS[@]}"; do
+        component_available "$c" || continue
+        MENU_ITEMS[$i]=$c
+        box="[ ]"; [[ "${WANTED[$c]}" == 1 ]] && box="[${c_green}x${c_reset}]"
+        state="off"; [[ "${CURRENT[$c]}" == 1 ]] && state="${c_green}on${c_reset}"
+        line="$box ${LABEL[$c]}"
+        if (( i == cursor )); then
+            echo -e " ${c_cyan}>${c_reset} ${c_bold}${line}${c_reset}  (now: ${state})"
+        else
+            echo -e "   ${line}  (now: ${state})"
+        fi
+        i=$((i + 1))
+    done
+    echo
+    echo -e "  ${c_bold}Up/Down${c_reset} move   ${c_bold}Space${c_reset} select   ${c_bold}Enter${c_reset} run   ${c_bold}a${c_reset} run + re-apply what's on   ${c_bold}q${c_reset} quit"
+}
+
+run_menu_tui() {
+    local cursor=0 key rest count
+    tput civis 2>/dev/null
+    trap 'tput cnorm 2>/dev/null' EXIT
+    while true; do
+        draw_menu_tui "$cursor"
+        count=${#MENU_ITEMS[@]}
+        IFS= read -rsn1 key
+        if [[ "$key" == $'\e' ]]; then
+            IFS= read -rsn2 -t 0.05 rest
+            key+="$rest"
+        fi
+        case "$key" in
+            $'\e[A'|k) (( cursor = (cursor + count - 1) % count )) ;;
+            $'\e[B'|j) (( cursor = (cursor + 1) % count )) ;;
+            " ") toggle_component "${MENU_ITEMS[$cursor]}" ;;
+            "") break ;;
+            a|A) REAPPLY=true; break ;;
+            q|Q) tput cnorm 2>/dev/null; echo; return 1 ;;
+        esac
+    done
+    tput cnorm 2>/dev/null
+    echo
+    return 0
+}
+
+run_menu_lines() {
     local reply
     while true; do
         show_menu
-        read -rp "$(echo -e "${c_bold}Type a number to toggle, Enter to continue, a = also re-apply what's on, q = quit:${c_reset} ")" reply
+        read -rp "$(echo -e "${c_bold}Type a number to toggle, Enter to continue, a = also re-apply what's on, q = quit:${c_reset} ")" reply || return 1
         case "$reply" in
             "") return 0 ;;
             a|A) REAPPLY=true; return 0 ;;