desktop: drop hyprpaper + speechd, quickshell draws wallpaper

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

settings/quickshell.nix

@@ -214,6 +214,7 @@ in
             //@ pragma UseQApplication
             import Quickshell
             import Quickshell.Io
+            import Quickshell.Wayland
             import Quickshell.Services.Notifications
             import QtQuick
 
@@ -262,6 +263,26 @@ in
                     }
                 }
 
+                // Wallpaper — replaces the hyprpaper daemon.
+                Variants {
+                    model: Quickshell.screens
+
+                    PanelWindow {
+                        required property var modelData
+                        screen: modelData
+                        WlrLayershell.layer: WlrLayer.Background
+                        exclusionMode: ExclusionMode.Ignore
+                        anchors { top: true; bottom: true; left: true; right: true }
+                        color: "black"
+
+                        Image {
+                            anchors.fill: parent
+                            source: "file://" + Quickshell.env("HOME") + "/.local/share/backgrounds/wallpaper.png"
+                            fillMode: Image.PreserveAspectCrop
+                        }
+                    }
+                }
+
                 Variants {
                     model: Quickshell.screens