Transform the uploaded portrait into a high-contrast vector poster illustration. Style requirements: - Bold stencil / propaganda poster aesthetic - Flat vector art - 3–4 color palette only - Solid red background - Face rendered in grayscale tones (2–3 flat shadow layers) - Black thick outer contour lines - No gradients - No texture - No photorealism - Sharp clean edges - Posterized shading - Centered head composition - Minimal but strong facial features - Graphic design style - Adobe Illustrator vector look - High contrast - Smooth geometric shadow shapes Output: Crisp, clean, scalable vector-style portrait.