sync github copilot limits

[rekram1-node]

No description provided.

[tlerbao]

Do different subscription levels return different results?

[rekram1-node]

@tlerbao probably? I think opencode should hit the models endpoint for copilot and derive from that and just fallback to models.dev

Idk if models.dev static lists are ideal here, cause I think enterprise setups can have pretty custom limits and things that we cant fully account for here.

[tlerbao]

@rekram1-node Yes, if I remember correctly, in another discussion, it seemed that someone's enterprise version script returned a 200K context, so simply hardcoding the configuration is not a good choice.