refactor: implement component-based architecture for enhanced maintainability

- Reorganize directory structure into core/, features/, and themes/
- Colocate application Nix logic, configs, scripts, and theme overrides
- Implement 'Inversion of Control' for theming: apps now pull theme-specific layouts
- Update flake.nix and shared library paths to match the new structure
- Document the new Feature-Centric architecture in README.md

features/desktop/scripts/nomarchy-restart-walker

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+restart_services() {
+  if systemctl --user is-enabled elephant.service &>/dev/null; then
+    systemctl --user restart elephant.service
+  fi
+
+  if systemctl --user is-enabled app-walker@autostart.service &>/dev/null; then
+    systemctl --user restart app-walker@autostart.service
+  else
+    echo -e "\e[31mUnable to restart Walker -- RESTART MANUALLY\e[0m"
+  fi
+}
+
+if (( EUID == 0 )); then
+  SCRIPT_OWNER=$(stat -c '%U' "$0")
+  USER_UID=$(id -u "$SCRIPT_OWNER")
+  systemd-run --uid="$SCRIPT_OWNER" --setenv=XDG_RUNTIME_DIR="/run/user/$USER_UID" \
+    bash -c "$(declare -f restart_services); restart_services"
+else
+  restart_services
+fi