Add OpenRouter endpoint aliases for openrouter/free and openrouter/auto

[Abubakr-Alsheikh]

Hey! I noticed there are two OpenRouter routing aliases available that are not added:
openrouter/free - automatically picks a free model
openrouter/auto - lets OpenRouter choose the best model for the prompt

I was trying to use openrouter/free but realized it's not in the models list. Not sure why we can't add these, is there a reason I'm missing? Do these aliases mess with how the API handles pricing/routing on our end?

Just want to understand if this is possible or if there's something blocking it. These would be super handy for quick prototyping without hunting down specific model IDs.

Thanks!

[APonce911]

Hey I've setup OpenCode yesterday and would love to have it implemented too. This is my first time opening this and OpenCode repos, but maybe I can help. Will take a look later today.