In order to build a working full-stack application, there are so many moving parts to think about. And you'll need to make many decisions that will be critical to the success of your app. For example, ...

A software application used for an online chat via text or text-to-speech, instead of giving contact with a human. Documented system prompts from Anthropic - Claude Fable 5.1, Opus 5.5, Claude Design, ...