CalculateDiff calculates the differences between the local and remote state and returns the actions to be performed.

CreateCategory represents an action to create a category.

CreateFeed represents an action to create a feed.

DeleteCategory represents an action to delete a category.

DeleteFeed represents an action to delete a feed.

Action represents an action to be performed to sync the local and remote state.

State represents either the current remote state of Miniflux, or the intended local state of Miniflux.

ActionSorter sorts actions by type and then by relevant fields within each type.

ActionType represents the type of action to be performed.