feat: make AGS colorshell configuration fully declarative

- Add complete colorshell v2.0.3 configuration to home/ags-config/
- Disable runner plugin and NightLight tile (incompatible with NixOS)
- Customize SCSS with full opacity (no transparency)
- Add dark pale blue color scheme in home/pywal-colors/
- Configure Papirus-Dark icon theme via home-manager
- Make ~/.config/ags/ immutable and managed by Nix store
- Auto-deploy pywal colors to ~/.cache/wal/colors.json

All AGS configuration is now reproducible and version controlled.

home/ags-config/window/bar/widgets/FocusedClient.tsx

@@ -0,0 +1,42 @@
+import { CompositorHyprland } from "../../../modules/compositors/hyprland";
+import { Gtk } from "ags/gtk4";
+import { createBinding, With } from "ags";
+import { variableToBoolean } from "../../../modules/utils";
+import { getAppIcon, getSymbolicIcon } from "../../../modules/apps";
+
+import Pango from "gi://Pango?version=1.0";
+
+const hyprland = new CompositorHyprland;
+
+export const FocusedClient = () => {
+    const focusedClient = createBinding(hyprland, "focusedClient");
+
+    return <Gtk.Box class={"focused-client"} visible={variableToBoolean(focusedClient)}>
+        <With value={focusedClient}>
+            {(focusedClient) => focusedClient?.class && <Gtk.Box>
+                <Gtk.Image iconName={createBinding(focusedClient, "class").as((clss) => 
+                      getSymbolicIcon(clss) ?? getAppIcon(clss) ?? 
+                          getAppIcon(focusedClient.initialClass) ?? 
+                              "application-x-executable-symbolic"
+                  )} vexpand
+                />
+                
+                <Gtk.Box valign={Gtk.Align.CENTER} class={"text-content"} 
+                  orientation={Gtk.Orientation.VERTICAL}>
+
+                    <Gtk.Label class={"class"} xalign={0} maxWidthChars={55} 
+                      ellipsize={Pango.EllipsizeMode.END} 
+                      label={createBinding(focusedClient, "class")}
+                      tooltipText={createBinding(focusedClient, "class")}
+                    />
+
+                    <Gtk.Label class={"title"} xalign={0} maxWidthChars={50} 
+                      ellipsize={Pango.EllipsizeMode.END} 
+                      label={createBinding(focusedClient, "title")}
+                      tooltipText={createBinding(focusedClient, "title")}
+                    />
+                </Gtk.Box>
+            </Gtk.Box>}
+        </With>
+    </Gtk.Box>;
+}