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/apps/scripts/nomarchy-restart-terminal

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+if [[ -f ~/.config/alacritty/alacritty.toml ]]; then
+  touch ~/.config/alacritty/alacritty.toml
+fi
+
+if pgrep -x kitty >/dev/null; then
+  killall -SIGUSR1 kitty >/dev/null
+fi
+
+if pgrep -x ghostty >/dev/null; then
+  killall -SIGUSR2 ghostty
+fi