Right now the site belongs to a made up sample business: Northwind Studio, Ridgeway Plumbing, Nora Bennett Coaching, Willow House or Saltbox Kitchen, depending on your template. In this lesson Claude replaces it with yours, using brand.md, the brand file you wrote in module 2. Your words go into the data files with one prompt. Your look comes from the prompts you saved in module 2. Then Claude merges your own CLAUDE.md notes from module 3 into the template's.
When Claude opens the pull request, read the copy it lists in its report. That is your home page. If a line does not sound like you, reply in the same session with the change, for example "Make the headline shorter and say who it is for." Claude updates the same pull request.