`bash do db-list` does not work

Running `bash do db-list` returns an error message:

```
Invalid action 'db-list', refer to help.
```

I believe this should link to the `db-migrations` script instead.

Start by inspecting the `do` entry point and the action definitions for `db-list` and `db-migrations`, then reproduce `bash do db-list`. Done means the command no longer reports an invalid action and links to the `db-migrations` script as requested.

Written by the indexing model from the issue text.