Research Synthesis to First Build: a PRD by Prompt-for-a-Prompt, Mood Boards in ChatGPT and Figma Weave, Grounding, and Claude Code

Attach the research document (or stay in the same chat). The generated PRD covered executive summary, goals and success metrics, personas, must/should/nice-to-have features, step-by-step user flows, non-functional requirements, out-of-scope and open questions, with accessibility in scope and INR display (swap for a currency picker). Keep downloaded copies in case regeneration is slow.

After a ChatGPT mood board (first too technical, second more consumer-friendly), the trainer builds Weave graphs: text nodes (PRD and research as Claude-written prompts, since docx cannot be uploaded), a Prompt Concentrator to merge them, and Nano Banana Pro as the generator because it handles text-plus-image (one run cost about 11 credits). The fix was a single grounding prompt through a Prompt Enhancer into the generator - less hallucination, somewhat less creativity. An Image Describer then turns the chosen board into a JSON prompt that Claude converts into a style guide that "fairly follows most of the accessibility guidelines".

Claude desktop app > Claude Code > new session > change folder to the project > add files > "build the app based on the PRD" > allow folder and terminal access. About ten minutes in, screens matched the mock-ups and saving an expense worked on localhost; statement import and settings were missing, and the plan's usage limit ran out.