Optimizing Next.js 15: Breaking the Main Thread Bottleneck

# Optimizing the Critical Rendering Path\n\nWhen building high-performance portfolios, the biggest enemy is **Total Blocking Time (TBT)**. In this deep dive, we explore how I audited the "Mayur_OS" portfolio using Chrome DevTools...\n\n## 1. The Dynamic Bridge Pattern\nBy offloading heavy client-side components to a dynamic bridge, we reduced the initial JavaScript payload by 40%.\n\n## 2. selective Hydration\nWhy hydrate what you can't see? We implemented Intersection Observers to trigger hydration only for components entering the viewport.