Code review comment for lp://staging/~artmello/webbrowser-app/webbrowser-app-bookmark_folders

> The SQL "bookmarks" table should probably have a foreign key constraint on
> folderId. See https://www.sqlite.org/foreignkeys.html.

It seems that Foreign Key support is disabled by default and need to be enabled setting the PRAGMA foreign_keys. But it is not possible to enable it in a multi-statement transaction so we would need to set it before each relevant transaction in the bookmarks-model. I think that could be error prone but can be done for sure. What do you think? Or maybe there is another way to do it that I am missing.