Already using it as the primary DB in multiple off my apps and dev pipelines. I don't trust my own "slop", but the all the tests from SQLite, Python, PHP etc agains the DB
I also found comments about replacing identifiers in SQL (used to implement ALTER statements probably?) which say that it won't work right if two things in the database have the same name and it'll get caught by a sanity check later.
That's just the parts I looked at.