docs: redesign banner to match goweft suite style (CAS parity)\n\nThree-panel card layout matching CAS visual language:\n - Panel 1 (memory file): gray bg, horizontal entry lines with red\n poisoned entries and amber credential leak line, blue right-edge\n accent bar\n - Center: blue scanner bar + magnifying glass icon + dashed scan beam\n - Panel 3 (findings): green-outlined report panel with CRITICAL/HIGH/\n MEDIUM severity indicators, health score bar, semantic verdict rows\n (confirm green, false_positive gray), green accent pill\n\nCard: 680x220 viewBox (shorter than old 280, matches CAS proportions)\nBackground: #f8f7f4, rx=12, same cream palette as suite

Author: goweft