Previously, ModelRegistry::resolve() lowercased the requested model name
before looking it up in the alias map, and always returned the registry's
canonical (lowercase) model ID. This broke third-party API providers
that enforce case-sensitive model name matching.
Now when the resolved model ID differs from the requested name only in
case (eq_ignore_ascii_case), the requested casing is preserved.
Closes#729
Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
AGSaturn
8e987a4702