What each file is, what it does, and where it sits in the process
The framework document does not sit at one point on this timeline. It explains the whole thing, including the part in step 3 that has no mockup yet because it runs on the server rather than on a screen.
The three files
If a rename would make this clearer on your end, for example matching file names to what pilots and schedulers actually call these screens, say so and I will update it. Nothing here is locked in.