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/appearance/nomarchy-font-set

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+
+# Set the system-wide monospace font that should be used by the terminal, hyprlock, waybar, swayosd, etc.
+# Declarative version for Nnomarchy NixOS.
+
+font_name="$1"
+
+if [[ -z $font_name ]]; then
+  echo "Usage: nnomarchy-font-set <font-name>"
+  exit 1
+fi
+
+STATE_DIR="$HOME/.config/home-manager"
+STATE_FILE="$STATE_DIR/state.json"
+
+mkdir -p "$STATE_DIR"
+[[ ! -f $STATE_FILE ]] && echo "{}" > "$STATE_FILE"
+
+if fc-list | grep -iq "$font_name"; then
+  TMP_JSON=$(mktemp)
+  jq ".font = \"$font_name\"" "$STATE_FILE" > "$TMP_JSON" && mv "$TMP_JSON" "$STATE_FILE"
+  echo "Font set to $font_name declaratively. Applying changes..."
+  env-update
+  
+  # Instant feedback for certain apps via IPC
+  if pgrep -x kitty; then
+    pkill -USR1 kitty
+  fi
+  if pgrep -x ghostty; then
+    pkill -SIGUSR2 ghostty
+    notify-send -u low "    You must restart Ghostty to see font change"
+  fi
+  
+  nnomarchy-hook font-set "$font_name"
+else
+  echo "Font '$font_name' not found."
+  exit 1
+fi