feat(system): comprehensive branding, styling, and system feature update

- Relocate themes to assets/themes/ and update all references.
- Implement custom SDDM theme and Plymouth theme enhancements.
- Add themed templates for Alacritty, Hyprland, Waybar, and other apps.
- Introduce Makima key remapper module and configuration.
- Add Voxtype and Walker configurations.
- Implement systemd power management and timeout optimizations.
- Add Nautilus-python extensions for LocalSend.
- Update branding assets and ASCII art integration.

bin/hardware/nomarchy-brightness-display

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+# Adjust brightness on the most likely display device.
+# Usage: nnomarchy-brightness-display <step>
+
+step="${1:-+5%}"
+
+# Start with the first possible output, then refine to the most likely given an order heuristic.
+device="$(ls -1 /sys/class/backlight 2>/dev/null | head -n1)"
+for candidate in amdgpu_bl* intel_backlight acpi_video*; do
+  if [[ -e /sys/class/backlight/$candidate ]]; then
+    device="$candidate"
+    break
+  fi
+done
+
+# Set the actual brightness of the display device.
+brightnessctl -d "$device" set "$step" >/dev/null
+
+# Use SwayOSD to display the new brightness setting.
+nnomarchy-swayosd-brightness "$(brightnessctl -d "$device" -m | cut -d',' -f4 | tr -d '%')"