Wire theme restore/backup into bin/restore.sh and bin/backup.sh

- restore.sh: after folder+venv+frontend restore, runs
  assets/themes/install-theme.sh to rebuild the desktop wiring
- backup.sh: snapshots live xfconf + GTK 3/4 settings.ini into
  assets/themes/restore-snapshot/ before the router mirror, so the
  backup captures actual state (install-theme.sh stays the applier)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

assets/themes/restore-snapshot/gtk-3.0-settings.ini

@@ -0,0 +1,15 @@
+[Settings]
+gtk-application-prefer-dark-theme=true
+gtk-button-images=true
+gtk-cursor-theme-name=DMZ-White
+gtk-cursor-theme-size=24
+gtk-decoration-layout=icon:minimize,maximize,close
+gtk-enable-animations=true
+gtk-font-name=Ubuntu 10
+gtk-icon-theme-name=NexusOS
+gtk-menu-images=false
+# gtk-modules=colorreload-gtk-module:window-decorations-gtk-module
+gtk-primary-button-warps-slider=false
+gtk-theme-name=NexusOS
+gtk-toolbar-style=3
+gtk-xft-dpi=98304

assets/themes/restore-snapshot/gtk-4.0-settings.ini

@@ -0,0 +1,12 @@
+[Settings]
+gtk-application-prefer-dark-theme=true
+gtk-theme-name=NexusOS
+gtk-cursor-theme-name=DMZ-White
+gtk-cursor-theme-size=24
+gtk-decoration-layout=icon:minimize,maximize,close
+gtk-enable-animations=true
+gtk-font-name=Ubuntu 10
+gtk-icon-theme-name=NexusOS
+gtk-modules=colorreload-gtk-module:window-decorations-gtk-module
+gtk-primary-button-warps-slider=false
+gtk-xft-dpi=98304

assets/themes/restore-snapshot/xfconf.txt

@@ -0,0 +1,8 @@
+# NexusOS live desktop wiring — snapshot 2026-05-18T13:42:57-05:00
+# Reference only. Restore is done by assets/themes/install-theme.sh
+xsettings /Net/ThemeName = NexusOS
+xsettings /Net/IconThemeName = NexusOS
+xsettings /Gtk/CursorThemeName = DMZ-White
+xsettings /Gtk/CursorThemeSize = 24
+xsettings /Gtk/FontName = Ubuntu 10
+xfwm4 /general/theme = NexusOS

bin/backup.sh

@@ -1,5 +1,23 @@
 #!/bin/bash
 
+# Snapshot the live NexusOS desktop wiring into the repo before mirroring,
+# so the backup captures the ACTUAL current state (not just the canonical
+# defaults baked into assets/themes/install-theme.sh). This is a reference
+# copy for recovery/diffing; install-theme.sh remains the applier on restore.
+snap="$HOME/nexus-core/assets/themes/restore-snapshot"
+mkdir -p "$snap"
+{
+    echo "# NexusOS live desktop wiring — snapshot $(date -Is)"
+    echo "# Reference only. Restore is done by assets/themes/install-theme.sh"
+    for p in /Net/ThemeName /Net/IconThemeName /Gtk/CursorThemeName \
+             /Gtk/CursorThemeSize /Gtk/FontName; do
+        echo "xsettings $p = $(xfconf-query -c xsettings -p "$p" 2>/dev/null)"
+    done
+    echo "xfwm4 /general/theme = $(xfconf-query -c xfwm4 -p /general/theme 2>/dev/null)"
+} > "$snap/xfconf.txt" 2>/dev/null || true
+cp -f "$HOME/.config/gtk-3.0/settings.ini" "$snap/gtk-3.0-settings.ini" 2>/dev/null || true
+cp -f "$HOME/.config/gtk-4.0/settings.ini" "$snap/gtk-4.0-settings.ini" 2>/dev/null || true
+
 lftp sftp://router:2022 << 'LFTP'
 set sftp:connect-program "ssh -a -x -p 2022"
 set cmd:interactive yes

bin/restore.sh

@@ -36,5 +36,16 @@ echo ""
 echo "Rebuilding frontend dependencies..."
 cd "$NEXUS_ROOT/interface/web" && npm install
 
+echo ""
+echo "Restoring NexusOS desktop theme..."
+theme_installer="$NEXUS_ROOT/assets/themes/install-theme.sh"
+if [ -x "$theme_installer" ]; then
+    "$theme_installer"
+elif [ -f "$theme_installer" ]; then
+    bash "$theme_installer"
+else
+    echo "Warning: $theme_installer not found — skipping theme restore."
+fi
+
 echo ""
 echo "Restore complete. Nexus is ready to start."