Add a workflow that, when a stable `unlshd-*` release is published, rewrites
the bug-report template's "Found in version" dropdown to keep exactly one
stable option (the new release tag) + "dev", then commits it to dev.
- Prerelease/non-unlshd tags are skipped.
- Surgical regex edit (minimal one-line diff), validated with yq before commit.
- Pushes via GITHUB_TOKEN don't retrigger CI; [ci skip] added to match convention.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
