Use raw strings rather than B64, assume paths don't have }

default.nix

@@ -51,7 +51,7 @@
 
     case "''${1:-}" in
       assimilate)
-        run rpc ":ok = \"$(echo -n "$2" | ${pkgs.coreutils}/bin/base64)\" |> Base.decode64!() |> Frajtano.Agent.assimilate()"
+        run rpc ":ok = ~S{$2} |> Frajtano.Agent.assimilate()"
       ;;
       spawn)
         shift