Missing version: v0.2

See: https://github.com/mikesart/gpuvis/tags

Start by reviewing the upstream tags at https://github.com/mikesart/gpuvis/tags and comparing them with the repository's current release information. Locate where the Flathub package version is declared, then verify that v0.2 is represented consistently and that the package metadata reflects the intended version.

索引モデルが issue の本文から書いたものです。