fix· Models
A run blocked on an unreachable model no longer burns a free task
When no available credential can serve the pinned model, the run now fails before it is counted against your daily allowance.
Pinning a model that none of your credentials could serve already failed before
any sandbox was created. It just failed after the run had been counted against
your daily free allowance, so a typo in .sinatrarc cost you a task. The check
now runs first.
The same change treats a workspace OpenRouter key as able to serve any model in the catalog, since it is a gateway. Workspaces on an OpenRouter key that were previously refused an Anthropic-credentialed model are not refused any more.
#1124