The same fact, written in five places

I'm building an LMS where teachers write courses in one language and students read them in another. So content i18n. Standard problem.

What surprised me was how many places "this field gets translated" had to live.

1 . supabase / migrations / ... sql CHECK ( entity_type IN (...)) 2 . backend / app / schemas / ... py Literal [ "course" , "module" , ...] 3 . backend / app / models / ... py Mapped [ Literal [...]] 4 . backend / app / services / ... / walker . py if entity_type == "course" : ... 5 . backend / app / api / v1 / announcements call reconcile_entity (...)

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Each of these is its own commit, its own PR, its own author. They drift independently.…