server: install rocksky as system package wrapper

hosts/server/configuration.nix

@@ -64,6 +64,7 @@
     bun
     nodejs
     node-gyp
+    (pkgs.callPackage ./slop/rocksky-cli.nix { })
   ];
 
   users.users.ocbwoy3 = {

hosts/server/slop/rocksky-cli.nix

@@ -0,0 +1,9 @@
+{ pkgs }:
+
+pkgs.writeShellApplication {
+  name = "rocksky";
+  runtimeInputs = [ pkgs.bun ];
+  text = ''
+    exec ${pkgs.bun}/bin/bun x @rocksky/cli "$@"
+  '';
+}