Remove Windows job (no Windows runner available) and merge build + release into a single job. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add .forgejo/workflows/release.yml for Forgejo Actions - Update signing pubkey for new key pair - Sync Cargo.toml version to 0.4.0 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>