Version-specific model detail pages

The model detail page is now available for any specific version at wrift.ai/{owner}/{model}/versions/{version_number}. Previously it only existed for the latest version.

Everything on the page works the same way but scoped to that version. The playground also targets that specific version, so any prediction you run from the page executes against it directly.

This is most useful when you are pinned to a specific version in production. Previously, verifying what that version accepts and returns meant calling the API's GET /models/{owner}/{model}/versions/{number} endpoint and reading through the response. Now you can load the page, inspect the inputs with all fields, types, and defaults, run a test prediction in the playground, and confirm behavior without touching your integration. It also makes evaluating an upgrade more straightforward: load the version you are on and the one you want to move to, compare the inputs, and spot any breaking changes before making the switch.