Disable transforming requests by default, unless configured accordingly.

[may]

If I'm reading the help correctly, OpenRouter is now transforming requests by default.

To prevent this, we need to modify lib/open_router/client.rb, line 40, to always send an empty array for the transforms parameter (unless, obviously, the user has specified a transformer).

OLD:
parameters[:transforms] = transforms if transforms.any?

NEW:
parameters[:transforms] = transforms

The method signature sets transforms to an empty array by default, which is what we need.

https://openrouter.ai/docs/transforms

Note: All OpenRouter models default to using middle-out, unless you exclude this transform by e.g. setting transforms: [] in the request body.