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-wifi-powersave

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+# Toggles wifi power saving declaratively.
+# Usage: nnomarchy-wifi-powersave <on|off>
+
+STATE_FILE="/etc/nixos/state.json"
+
+case "$1" in
+on)  value="true" ;;
+off) value="false" ;;
+*) echo "Usage: nnomarchy-wifi-powersave <on|off>"; exit 1 ;;
+esac
+
+sudo jq ".wifi.powersave = $value" "$STATE_FILE" > /tmp/state.json && sudo mv /tmp/state.json "$STATE_FILE"
+
+echo "Wifi powersave set to $1. Applying changes..."
+sudo sys-update