DDA 0.I release candidate builds not available

For the versions listed in the CDDA fork the only builds available are the 0.H stable build or the experimental builds. Despite the checkbox for Release Candidate there are no 0.I RCs listed. In fact, filtering to just Release Candidate results in an empty list.

Only the Release Candidate filter does not work, the other 2 filters work as they should.

The issue is about the release candidate filter not showing any builds in the launcher UI. Start by examining the code that fetches and filters available builds, likely in a Rust backend module or a React component handling the filter logic. Look for where the filter types (stable, experimental, release candidate) are defined and applied. Verify the data source for builds to ensure release candidate builds are being fetched correctly. Testing the filter UI and checking network requests or logs will help confirm the bug.

索引モデルが issue の本文から書いたものです。