There's a few parts of grummage which depend on grype, which can take a while to finish, depending on factors like hardware resources, network speed, and sbom complexity. The UI should inform the user when these things are happening, rather than just show a blank screen or do nothing.

Some examples:

• Initially loading the SBOM
• Running grype to analyze the SBOM
• Downloading and hydrating the grype vuln database
• Running the 'explain' option via grype