install: add split system and user targets

install/config/theme-user.sh

@@ -0,0 +1,16 @@
+# Setup user theme folder
+mkdir -p ~/.config/omarchy/themes
+
+# Set initial theme. Offline ISO installs only need the user's theme files and
+# symlinks seeded; there is no running desktop/session bus in the chroot, so
+# skip shell IPC, dconf, app retint hooks, and background transition work.
+if install_mode_is offline; then
+  OMARCHY_THEME_OFFLINE=1 OMARCHY_THEME_SKIP_BACKGROUND=1 omarchy-theme-set "Tokyo Night"
+else
+  omarchy-theme-set "Tokyo Night"
+fi
+rm -rf ~/.config/chromium/SingletonLock # otherwise archiso will own the chromium singleton
+
+# Set specific app links for current theme
+mkdir -p ~/.config/btop/themes
+ln -snf ~/.config/omarchy/current/theme/btop.theme ~/.config/btop/themes/current.theme