v2.1.7

Changed

• Visual Identity (Ultra-Visible Favicon): Replaced the complex favicon with an ultra-minimalist, high-contrast design (Cyan "N" on dark background) to ensure maximum visibility in browser tabs, following the design patterns of X, GitHub, and LinkedIn.
• Index Branding Restoration: Reverted the header image on the V2 index page to the "Gemini construction car" (now standardized as hero-car.png) to maintain the project's established visual impact while keeping a separate, cleaner icon for navigation tabs.