Set fixed wallpaper for Noctalia via wallpapers.json cache

ansible/inventory/group_vars/desktop.yml

@@ -290,6 +290,10 @@ desktop_sway_dotfiles:
     src: .config/i3/wallpapers/
     dest: .config/sway/wallpapers/
     mode: preserve
+  - name: Noctalia wallpaper library
+    src: Pictures/Wallpapers/
+    dest: Pictures/Wallpapers/
+    mode: preserve
   - name: Sway session wrapper
     src: .local/bin/start-sway-session
     dest: .local/bin/start-sway-session
@@ -312,6 +316,8 @@ noctalia_bar_monitors:
 
 noctalia_screen_overrides: []
 
+noctalia_wallpaper: "{{ user_home }}/Pictures/Wallpapers/star-wars-trio.jpg"
+
 desktop_flatpak_packages:
   - be.alexandervanhee.gradia
   - ch.protonmail.protonmail-bridge