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-config-direct-boot

@@ -0,0 +1,45 @@
+#!/bin/bash
+
+# Add an EFI boot entry for the Nomarchy UKI, allowing the system to boot directly
+# without a bootloader like Limine. Requires UEFI firmware and a built UKI.
+
+if [[ ! -d /sys/firmware/efi ]]; then
+  echo "Error: System is not booted in UEFI mode" >&2
+  exit 1
+fi
+
+if ! efibootmgr &>/dev/null; then
+  echo "Error: efibootmgr is not available or not functional" >&2
+  exit 1
+fi
+
+if cat /sys/class/dmi/id/bios_vendor 2>/dev/null | grep -qi "American Megatrends"; then
+  echo "Error: American Megatrends firmware may not safely support custom EFI entries" >&2
+  exit 1
+fi
+
+if cat /sys/class/dmi/id/bios_vendor 2>/dev/null | grep -qi "Apple"; then
+  echo "Error: Apple firmware uses its own boot manager" >&2
+  exit 1
+fi
+
+uki_file=$(find /boot/EFI/Linux/ -name "nomarchy*.efi" -printf "%f\n" 2>/dev/null | head -1)
+
+if [[ -z $uki_file ]]; then
+  echo "Error: No Nomarchy UKI found in /boot/EFI/Linux/" >&2
+  exit 1
+fi
+
+boot_source=$(findmnt -n -o SOURCE /boot)
+disk=$(echo "$boot_source" | sed 's/p\?[0-9]*$//')
+part=$(echo "$boot_source" | grep -o 'p\?[0-9]*$' | sed 's/^p//')
+
+if gum confirm "Setup direct boot (so snapshot booting must be done via bios)?"; then
+  echo "Creating EFI boot entry for $uki_file"
+
+  sudo efibootmgr --create \
+    --disk "$disk" \
+    --part "$part" \
+    --label "Nomarchy" \
+    --loader "\\EFI\\Linux\\$uki_file"
+fi