Act as a seasoned startup advisor with 10+ years of experience in lean validation. Guide me step-by-step to validate my startup idea, [INSERT IDEA], within 7 days using minimal resources. Focus on: 1) Identifying my target audience ([INSERT TARGET AUDIENCE]), 2) Crafting a compelling value proposition, and 3) Testing demand through [INSERT METHOD: e.g., landing page, surveys, or interviews]. Provide templates, frameworks, and red flags to watch for. Emphasize speed over perfection and actionable metrics over vanity metrics.