SEO Handler Skill This skill ensures your Next.js application is optimized for search engines. It covers sitemaps, metadata (OpenGraph), server-side rendering (SSR/ISR), structured data (JSON-LD), and robots.txt configuration. Core Principles 1. Sitemap Visibility : Every public page MUST be in . 2. Metadata Inheritance : Use for defaults; override in . 3. Structured Data : Use components (JSON-LD) on every content page. 4. Server-Side Data : Fetch content-heavy data on the server (ISR) for SEO. 5. Robots Control : Use to guide crawlers. 1. Sitemap Management File : When adding a new public r…