Plan: the experience and the system

You will be able to

• Write MVP objectives: what this MVP must prove, with a threshold set before building
• Map today’s and the future journey, and the fewest steps to the first value moment
• Choose the prototype fidelity that answers the question you need answered
• Build a clickable prototype as a Claude Artifact and test it without leading anyone
• Apply five accessibility essentials before anyone tests your prototype

OUTPUT · MVP objectives + journey + prototype + notes from two usability sessions

You will be able to

• Explain the five parts of a web product in plain English, using your own product
• Model your product’s nouns: entities, fields, relationships, owner and lifecycle
• Choose a simple first architecture and explain why it beats a fashionable one
• Write an Architecture Decision Record that a newcomer could follow
• Explain authentication vs authorisation and apply five security-by-design basics

OUTPUT · System sketch + data model in 03-design.md + first ADR in product/decisions/