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-theme-set-obsidian

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+# Sync Nnomarchy theme to all Obsidian vaults
+
+CURRENT_THEME_DIR="$HOME/.config/nnomarchy/current/theme"
+
+[[ -f $CURRENT_THEME_DIR/obsidian.css ]] || exit 0
+
+jq -r '.vaults | values[].path' ~/.config/obsidian/obsidian.json 2>/dev/null | while read -r vault_path; do
+  [[ -d $vault_path/.obsidian ]] || continue
+
+  theme_dir="$vault_path/.obsidian/themes/Nnomarchy"
+  mkdir -p "$theme_dir"
+
+  [[ -f $theme_dir/manifest.json ]] || cat >"$theme_dir/manifest.json" <<'EOF'
+{
+  "name": "Nnomarchy",
+  "version": "1.0.0",
+  "minAppVersion": "0.16.0",
+  "description": "Automatically syncs with your current Nnomarchy system theme colors and fonts",
+  "author": "Nnomarchy",
+  "authorUrl": "https://nnomarchy.org"
+}
+EOF
+
+  cp "$CURRENT_THEME_DIR/obsidian.css" "$theme_dir/theme.css"
+done