Write database migration tests
A future version of Feeel will be switching from pure SQFLite to Drift as its database. This Drift database is implemented in the "drift" branch of the project.
As part of this development, it's important to test that the old database is migrated into the new database smoothly.
Please write tests that will ensure that old database versions are migrated smoothly.
The "Verifying migrations" part of the Drift documentation should be helpful here.
Please make these changes to the "drift" branch.