I am new to LangGraph and I have limited programing experience. I have a product demo on July 22, so I wanted to build a simple version of the app for demo purposes only. I’d like honest opinions on whether this architecture is the best fit or whether you’d build it differently. App: a fitness-coaching tool. Core principle: deterministic Python rules make every coaching decision (load progression, calories, rest days); the LLM only writes the natural-language explanation, bound to a Pydantic ...