Making things became cheap. Deciding what not to make became the job.
My first plan for Whereto had four categories in a dark iOS app. Reality subtracted: within a day it was eat and drink only, on the web, because a link can be texted in a second and a beta app cannot.
AI will generate a design from one line. It will look fine and feel generic, and it cannot tell you which design is right.
That is taste, and you build it by looking at a lot of good work. Collect references first, then give the model three to five with a sentence on what works in each.
Claude does not remember yesterday. Keep a README and an architecture doc in the project, including the known weaknesses, which is the section a newcomer needs most.