fix: wallpaper path + add wallpapers to assets/

Moved wallpapers from nixos-config/home/m3tam3re/wallpapers/ to
m3ta-home/assets/wallpapers/ and fixed the relative path reference
in the theme module.

profiles/contexts/desktop/theme/wallpapers.nix

@@ -11,8 +11,8 @@ in {
 
   config = mkIf cfg {
     xdg.configFile."hypr/wallpapers" = {
-      # Wallpapers are stored relative to the home/m3tam3re directory.
-      source = ../../m3tam3re/wallpapers;
+      # Wallpapers stored in m3ta-home/assets/wallpapers/
+      source = ./../../../assets/wallpapers;
       recursive = true;
     };
   };