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.

assets/themes/lumon/swayosd.css

@@ -0,0 +1,44 @@
+@define-color background-color #1b2d40;
+@define-color border-color #304860;
+@define-color label #d6e2ee;
+@define-color image #d6e2ee;
+@define-color progress #6fb8e3;
+@define-color edge-light #f2fcff;
+
+/* Cancel out Nomarchy defaults */
+window:not(:backdrop),
+window:backdrop {
+    border: none;
+    border-width: 0;
+    background-color: transparent;
+    box-shadow: none;
+    padding: 12px;
+}
+
+/* Draw the Lumon OSD shell */
+window:not(:backdrop) #container,
+window:backdrop #container {
+    border: 2px solid alpha(@border-color, 0.92);
+    background-color: alpha(@background-color, 0.95);
+    padding: 12px 16px;
+    background-clip: padding-box;
+}
+
+image,
+label {
+    color: @label;
+}
+
+progressbar {
+    min-height: 8px;
+}
+
+progressbar trough {
+    background: alpha(@border-color, 0.24);
+    box-shadow: inset 0 1px rgba(242, 252, 255, 0.03);
+}
+
+progressbar progress {
+    background: linear-gradient(90deg, @progress, @edge-light);
+    box-shadow: 0 0 10px rgba(111, 184, 227, 0.18);
+}