Display "no animation available" or something if pose isn't one of the animations

この issue には説明がありません。

The issue has no description, file path, test, or entry point. Start by locating where poses are mapped to animations and where an unsupported pose is displayed; confirm the expected fallback wording with a maintainer. Done means unsupported poses show a clear “no animation available” message without disrupting supported animations.

索引モデルが issue の本文から書いたものです。