Migrated desktop environment from XFCE to KDE Plasma with simplified profiles.

- Replaced XFCE with KDE Plasma and SDDM display manager.
- Reduced profiles from seven to four (minimal, server, basic, office).
- Split home skeleton files into home-skel and home-skel-desktop directories.
- Added display name prompt during user setup.
- Added 7zip and fwupd to base packages.

config/defaults.conf

@@ -28,7 +28,8 @@ MIRROR_URL='https://mirrors.logal.dev/archlinux/$repo/os/$arch'
 # Paths
 CA_CERTS_DIR="${SCRIPT_DIR}/files/certs"
 CONFIG_SRC_DIR="${SCRIPT_DIR}/files/etc"
-HOME_CONFIG_DIR="${SCRIPT_DIR}/files/home"
+HOME_SKEL_DIR="${SCRIPT_DIR}/files/home-skel"
+HOME_SKEL_DESKTOP_DIR="${SCRIPT_DIR}/files/home-skel-desktop"
 MOUNT_POINT="/mnt"
 
 # Base packages to install with pacstrap
@@ -51,4 +52,6 @@ BASE_PACKAGES=(
     iptables-nft
     openssh
     usbguard
+    7zip
+    fwupd
 )