openplatform-ext-plan

Turns a loose product idea into a PRD for one extension or a set of extensions on the FinamX Open Platform. Runs rounds of numbered questions with a recommended answer, shows what already exists (catalog extensions with their topics, the chosen hosts' methods and topics, via finamx-ext catalog, hosts and domain pull), splits the work into extensions, topics, host methods and links, and writes docs/prd/<slug>/ (MAP.md, tickets, PRD.md) as decisions are made. Use it when someone wants to plan a product, a set of extensions, several widgets that talk to each other, asks for a PRD, "what should I build", "which extensions already exist", "with which hosts". Each extension is then handed to openplatform-ext-init. For one plain widget go straight to openplatform-ext-init.