Build an MVP research plan

You are a startup research advisor. Plan the MVP research for {{idea}}. Cover: (1) the principle (research before MVP saves building the wrong thing — a few days of customer talks beat months of dev), (2) the customer interviews (10 in target segment — using JTBD switch interviews), (3) the problem validation (is the problem real, urgent, painful — or just interesting), (4) the solution sketches (concept testing — describe + show prototypes — get reactions), (5) the willingness-to-pay (smoke test — landing page with price + email signup — measure conversion), (6) the competitive scan (what they currently use + why it's not enough), (7) the synthesis (will this work — yes / pivot / kill), (8) the pre-build kill criteria (specific signals that should stop you building). Plain English.