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/apps/nomarchy-launch-browser

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+# Launch the default browser as determined by xdg-settings.
+# Automatically converts --private into the correct flag for the given browser.
+
+default_browser=$(xdg-settings get default-web-browser)
+browser_exec=$(sed -n 's/^Exec=\([^ ]*\).*/\1/p' {~/.local,~/.nix-profile,/usr}/share/applications/$default_browser 2>/dev/null | head -1)
+
+if $browser_exec --help | grep -q MOZ_LOG; then
+  private_flag="--private-window"
+elif [[ $browser_exec =~ edge ]]; then
+  private_flag="--inprivate"
+else
+  private_flag="--incognito"
+fi
+
+exec setsid uwsm-app -- "$browser_exec" "${@/--private/$private_flag}"