A friend of mine is a manager who coded their own startup idea with Claude. Since they're not a software engineer, the usual design documents and graphics (flowcharts, infrastructure diagrams) are missing.

I will try to find the golden thread and figure out how the application does things, and if these are the actual intended behaviours my friend wanted the application to fulfill.

However: what else can I do to get a hold of this mess? I thought about using Claude to generate MADRs and application diagrams, but then again, Claude probably talks shit. Any ideas on how to figure out how this application works apart from reading the source code and interviewing my friend about it?