Fix bug in select loop so multiple options do not appear on the same line.

x86_64/airootfs/usr/local/bin/install-stormux

@@ -192,6 +192,7 @@ select_disk() {
     lsblk -dno NAME,SIZE,TYPE,MODEL | grep -E "^($(IFS='|'; echo "${disks[*]}")).*disk" || true
 
     PS3="Enter disk number: "
+    COLUMNS=1
     select diskChoice in "${disks[@]}" "Cancel"; do
         if [[ "$diskChoice" == "Cancel" ]]; then
             log_info "Disk selection cancelled by user"
@@ -268,6 +269,7 @@ select_install_target() {
 
     local manualOption="Use existing /mnt (already mounted root/home/boot)"
     PS3="Enter target number: "
+    COLUMNS=1
     select targetChoice in "${disks[@]}" "$manualOption" "Cancel"; do
         if [[ "$targetChoice" == "Cancel" ]]; then
             log_info "Target selection cancelled by user"
@@ -326,6 +328,7 @@ select_partition_layout() {
     )
 
     PS3="Enter layout number: "
+    COLUMNS=1
     select layout in "${layouts[@]}"; do
         case "$layout" in
             "Single partition"*)
@@ -1088,6 +1091,7 @@ gather_system_info() {
     local desktops=("Console only (Fenrir screen reader)" "i3 (tiling window manager)" "MATE (traditional desktop)")
 
     PS3="Enter desktop number: "
+    COLUMNS=1
     select desktop in "${desktops[@]}"; do
         case "$desktop" in
             "Console only"*)
@@ -1122,6 +1126,7 @@ gather_system_info() {
         else
             echo "Select which user should automatically login to the graphical session:"
             PS3="Enter user number: "
+            COLUMNS=1
             select selectedUser in "${userNames[@]}"; do
                 if [[ -n "$selectedUser" ]]; then
                     autoLoginUser="$selectedUser"