Do not import from @rcc/core/src

It feels wrong to import from @rcc/core/src/… as @rcc/core should behave like a package. We want to improve the entrypoint. See https://gitlab.com/recoverycat/rcc-client/-/merge_requests/78#note_1183617919 as reference

Include specific tasks in the order they need to be done in. Include links to specific lines of code where the task should happen at.