specification.md — "Me at the Same Age as My Parents" milestone quiz

An 8-question multiple-choice quiz where each question is a milestone your parents had checked off at your current age: owned a home, had kids, knew how to file taxes without googling, owned a real dining table (not a repurposed desk), a lawnmower, a "good" set of towels for guests. You answer honestly for yourself. Your score maps to a diagnosis card: "You are 4 Adult Milestones behind schedule. At your age your mother had a mortgage and a toddler; you have a scented candle and a subscription you forgot to cancel." The card is the share — you post it to stories or drop it in the group chat as…