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/widget/EntryPopup.tsx

@@ -0,0 +1,61 @@
+import { Accessor } from "ags";
+import { tr } from "../i18n/intl";
+import { CustomDialog } from "./CustomDialog";
+import { Astal, Gtk } from "ags/gtk4";
+
+export type EntryPopupProps = {
+    title: string | Accessor<string>;
+    text?: string | Accessor<string>;
+    cancelText?: string | Accessor<string>;
+    acceptText?: string | Accessor<string>;
+    closeOnAccept?: boolean;
+    entryPlaceholder?: string | Accessor<string>;
+    onAccept: (userInput: string) => void;
+    onCancel?: () => void;
+    onFinish?: () => void;
+    isPassword?: boolean | Accessor<string>;
+};
+
+export function EntryPopup(props: EntryPopupProps): Astal.Window {
+    props.closeOnAccept = props.closeOnAccept ?? true;
+    let entered: boolean = false;
+
+    function onActivate(entry: Gtk.Entry|Gtk.PasswordEntry) {
+        props.closeOnAccept && window.close();
+        entered = true;
+        props.onAccept(entry.text);
+        entry.text = "";
+    }
+
+    const entry = props.isPassword ? 
+        <Gtk.PasswordEntry class={"password"} xalign={.5} 
+          placeholderText={props.entryPlaceholder} 
+          onActivate={onActivate}
+        /> as Gtk.PasswordEntry
+    : <Gtk.Entry xalign={.5} placeholderText={props.entryPlaceholder}
+        onActivate={onActivate} /> as Gtk.Entry;
+
+    const window = <CustomDialog namespace={"entry-popup"} widthRequest={420} 
+      heightRequest={220} title={props.title} text={props.text}
+      options={[
+          {
+              text: props.cancelText ?? tr("cancel"),
+              onClick: props.onCancel
+          },
+          {
+              text: props.acceptText ?? tr("accept"),
+              closeOnClick: props.closeOnAccept,
+              onClick: () => {
+                  entered = true;
+                  props.onAccept(entry.text);
+                  entry.text = "";
+              }
+          }
+      ]} onFinish={() => {
+          !entered && props.onCancel?.()
+          props.onFinish?.();
+      }} 
+    /> as Astal.Window;
+
+    return window;
+}