- Replaces `.gitlab-ci.yml` with a GitHub Actions workflow.
- Uses Ubuntu 29.1 Emacs container for consistent builds.
- Installs and verifies dependencies (forge and llm).
- Byte-compiles the package and uploads the `.elc` file.
- Includes linting with `package-lint`.
- Sets `TERM` and `DEBIAN_FRONTEND` environment variables.
- Uses GitHub Actions artifacts to store the compiled file.
