aipos-p2

Build the validation artifacts of AIPOS Pillar 2 (Rapid Validation) — interview guide, problem sizing, visual prototype brief, demand test, feasibility spike, eval stub and brief, and the viability brief that carries the Validation Decision. Use this whenever a PM wants to test an assumption before committing engineering capacity — talking to users, sizing a problem, prototyping to learn, running a fake-door or demand test, checking technical or data feasibility, defining success criteria for a GenAI feature, or making a go / no-go / revise call. Trigger it even when the user doesn't name an artifact; phrases like 'is this worth building', 'how do we know people want this', 'size this opportunity', 'can we actually build this', 'what would prove this works', 'should we kill this', 'prep for user interviews', or 'we need to validate before we commit' all belong here. Works with or without an Aha! record — evidence is optional input, never a prerequisite.