The provider is always the prefix before "/" in the model ID,
so storing it as a separate field is redundant. Replace the
field with a Provider() method.
Signed-off-by: Aurélien Sibiril <81782+aureliensibiril@users.noreply.github.com>
Build registries from inline map literals instead of relying
on generated OpenRouter data that can change between runs.
Signed-off-by: Aurélien Sibiril <81782+aureliensibiril@users.noreply.github.com>
Lookup by canonical ID, bare name, and normalized form.
Capability assertions for Claude, GPT-5.4, and o3. Edge
cases for empty string and provider-prefix-only inputs.
Signed-off-by: Aurélien Sibiril <81782+aureliensibiril@users.noreply.github.com>