Add MetroVault

[andreasgriffin]

Required

• pre-commit install before any commit. If pre-commit wasn't run for all commits, you can squash all commits git reset --soft $(git merge-base main HEAD) && git commit -m "squash" and ensure the squashed commit is properly formatted
• All commits must be signed. If some are not, you can squash all commits git reset --soft $(git merge-base main HEAD) && git commit -m "squash" and ensure the squashed commit is signed
• UI/Design/Menu changes were tested on macOS, because macOS creates endless problems. Optionally attach a screenshot.

Optional

• Update all translations
• Appropriate pytests were added
• Documentation is updated
• If this PR affects builds or install artifacts, set the Build-Relevant label to trigger build workflows
• If this PR affects reproducible build outputs, set the Reproducibility-Relevant label to trigger the checksum comparison workflow
• Instruct AI

create a concise summary (bullet points, no stats) for this pr and make a good title