[Bug]: claude backend doesnt really need the API key

[adhityaravi]

when using orc with the claude backend, orc kinda enforces the ANTHROPIC_API_KEY to be set.
But its just making a call to the existing installed claude code which might already be authenticated via whichever method. so for example if i am authenticated in claude code via my subscription and set the key to something like

ANTHROPIC_API_KEY=one-key-to-rule-them-all

orc works just fine. So, the guardrail is superfluous and a little misleading

I am assuming the same applies for copilot as well.