FactoryAI user praises /missions for planning before a build

A FactoryAI user says /missions delivered the pre-build planning they wanted: product and architecture choices, trade-offs discussed together, and clear milestones with room to change direction. They also asked for HTML output to review in a browser, citing its formatting and layout options. Their preference is for back-and-forth clarification before agents begin work that could be costly to undo.