feat: bury offline mode, ship antergos-layan-theme

remember when i thought an offline installer was a good idea?
a pre-built squashfs that still needed internet to install DEs?
"offline" in name only. it was a lie. a beautiful, naive lie.

so i killed it. ripped out the mode picker, the connectivity check,
the whole AskMode() circus. calamares-next now just shows a notice
saying "yeah that wasnt actually offline" and launches directly
into online mode. no more pretending.

also fixed the QML nav button because having a greyed out "Next"
on the last page is terrible UX. now it says "Done" and quits.
youre welcome.

and since we nuked the offline mode, might as well make the
online mode look fucking spectacular. enter antergos-layan-theme:

- kvantum theme because your apps deserve better than qt dreck
- sddm theme (AntergosDark-Layan) for a sexy login screen
- every plasma plasmoid from the rice (panel colorizer, netspeed,
  shutdown switch, applets, separators, music toolbar, the works)
- yakuake arc-dark skin
- antergos logos in /usr/share/logos and /usr/share/pixmaps
- konsole profile, desktop appletsrc, all that jazz
- kde_settings.conf now points to AntergosDark-Layan sddm theme

also replaced the old antergos-grub-theme with the Layan grub
theme because the old one was a git-sourced abomination. 75 distro
icons, terminal box, selection widgets, antergos wallpaper.
ships to /usr/share/grub/themes/antergos/ so calamares finds it.

oh and a dozen audit fixes:
- kscreenlockerrc wallpaper path fixed
- kdialogrc no longer says some other distro
- 7 stale knsregistry files deleted (dev machine was leaking)
- systemd-inhibit guarded with command -v (dinit doesnt have it)
- plasma restart uses killall not systemctl --user
- "XeroLinux Toolkit" -> "Antergos Toolkit" in appletsrc
- KDE_SESSION_VERSION=5 -> =6 (its 2026)
- mirrorlist script says Artix not Arch
- SDDM Messages.sh removed from build artifacts

packages/antergos-grub-theme/PKGBUILD

@@ -1,72 +1,20 @@
 # Maintainer: Antergos-NeXT Team <ash8820@proton.me>
 
 pkgname=antergos-grub-theme
-pkgver=2026.06
+pkgver=2026.07
 pkgrel=1
-pkgdesc='Antergos GRUB theme'
+pkgdesc='Antergos GRUB theme (Layan)'
 arch=('any')
-url="https://github.com/Antergos-NeXT/antergos-branding"
+url="https://github.com/Antergos-NeXT/antergos-packages"
 license=('GPL')
 depends=('grub')
-makedepends=('git')
-source=("git+https://gitea.artixlinux.org/artix/artix-branding.git"
-        "git+https://github.com/antergos/grub2-theme-antergos.git")
-sha256sums=('SKIP'
-            'SKIP')
+source=()
+sha256sums=()
+
+prepare() {
+  cp -a "${srcdir}/../Layan" "${srcdir}/"
+}
 
 package() {
-    mkdir -p $pkgdir/usr/share/grub/themes/antergos/icons
-
-    # Use original Antergos background and logo
-    cp grub2-theme-antergos/Antergos-Default/background.png $pkgdir/usr/share/grub/themes/antergos/
-    cp grub2-theme-antergos/Antergos-Default/antergoslogo.png $pkgdir/usr/share/grub/themes/antergos/logo.png
-
-    # Copy Artix GRUB theme infrastructure (UI elements)
-    cp artix-branding/artix-grub-theme/artix/highlight_c.png $pkgdir/usr/share/grub/themes/antergos/
-    cp artix-branding/artix-grub-theme/artix/highlight_e.png $pkgdir/usr/share/grub/themes/antergos/
-    cp artix-branding/artix-grub-theme/artix/highlight_w.png $pkgdir/usr/share/grub/themes/antergos/
-    cp artix-branding/artix-grub-theme/artix/menu_c.png $pkgdir/usr/share/grub/themes/antergos/
-    cp artix-branding/artix-grub-theme/artix/menu_e.png $pkgdir/usr/share/grub/themes/antergos/
-    cp artix-branding/artix-grub-theme/artix/slider_c.png $pkgdir/usr/share/grub/themes/antergos/
-    cp artix-branding/artix-grub-theme/artix/slider_n.png $pkgdir/usr/share/grub/themes/antergos/
-    cp artix-branding/artix-grub-theme/artix/slider_s.png $pkgdir/usr/share/grub/themes/antergos/
-    cp artix-branding/artix-grub-theme/artix/unifont.pf2 $pkgdir/usr/share/grub/themes/antergos/
-
-    # Copy Antergos OS icon and GRUB UI icons
-    cp grub2-theme-antergos/Antergos-Default/icons/antergos.png $pkgdir/usr/share/grub/themes/antergos/icons/
-    cp artix-branding/artix-grub-theme/artix/icons/* $pkgdir/usr/share/grub/themes/antergos/icons/
-
-    # Rename icon files for GRUB class matching
-    mv $pkgdir/usr/share/grub/themes/antergos/icons/artix.i686.png $pkgdir/usr/share/grub/themes/antergos/icons/antergos.i686.png 2>/dev/null || true
-    mv $pkgdir/usr/share/grub/themes/antergos/icons/artix.x86_64.png $pkgdir/usr/share/grub/themes/antergos/icons/antergos.x86_64.png 2>/dev/null || true
-
-    # Write theme.txt
-    cat > $pkgdir/usr/share/grub/themes/antergos/theme.txt << 'THEME'
-# Antergos GRUB theme
-desktop-image: "background.png"
-title-text: ""
-terminal-font: "Unifont Regular 16"
-
-+ boot_menu {
-    left = 15%
-    top = 30%
-    width = 75%
-    height = 45%
-    item_font = "Unifont Regular 16"
-    item_color = "#f4f4f4"
-    selected_item_font = "Unifont Regular 16"
-    selected_item_color = "#62c0f8"
-    selected_item_pixmap_style = "highlight_*.png"
-    icon_height = 28
-    icon_width = 28
-    item_height = 32
-    item_padding = 0
-    item_icon_space = 32
-    item_spacing = 0
-    scrollbar = true
-    scrollbar_width = 32
-    scrollbar_thumb = "slider_*.png"
-    menu_pixmap_style = "menu_*.png"
-}
-THEME
+  cp -a "${srcdir}/Layan" "${pkgdir}/usr/share/grub/themes/antergos"
 }