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/scripts/utils/nomarchy-lock-screen

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+# Locks the system using hyprlock, but not before ensuring 1password has also been locked, and the screensaver stopped.
+
+# Lock the screen
+pidof hyprlock || hyprlock &
+
+# Set keyboard layout to default (first layout)
+hyprctl switchxkblayout all 0 > /dev/null 2>&1
+
+# Ensure 1password is locked
+if pgrep -x "1password" >/dev/null; then
+  1password --lock &
+fi
+
+# Avoid running screensaver when locked
+pkill -f org.nomarchy.screensaver