tux/weckyy702: Add orly book covers to randomized background list

flake.nix

@@ -36,6 +36,10 @@
       url = "github:nix-community/nixvim/nixos-25.11";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    orly-covers = {
+      url = "github:thepracticaldev/orly-full-res";
+      flake = false;
+    };
     rust-overlay = {
       url = "github:oxalica/rust-overlay";
       inputs.nixpkgs.follows = "nixpkgs";