I don't like that you are defining a lot of identical test, lint and fix tasks? Maybe you could remove them and move their's inputs to global ones instead?

This is the exact opposite what this PR tries to achieve. It tries to strictly and explicitly describe each task inputs, outputs, dependencies and persistence to avoid any clashes.

Unfortunately, Turborepo doesn't seem to have a concept of default (template) task options. It only has:

• global task options: which is as it was before, where you define something like lint and this configures options for all tasks called lint except for those that explicitly defined (like below)
• and single task options, which completely overrides global tasks options, meaning if you define @modrinth/app#lint, it will not inherit any options from lint (for better or for worse)

So it's easier to just explicitly to define everything in case any of the tasks is going to have an exception to its options. It's also much better to see what's going on at a quick glance, without needing to know how Turborepo works under the hood. It's going to end up in some duplication, but that's not a big deal, IMO. Mindless DRY is a terrible concept anyway.

This is the exact opposite what this PR tries to achieve. It tries to strictly and explicitly describe each task inputs, outputs, dependencies and persistence to avoid any clashes.

I'm not a fan of this change... I think we can override tasks in the future if necessary, so we don't need to specify identical configurations right now. But I do like that you improved and specified some configurations (mainly build).