Build a Self-Hosted App Dashboard with Next.js

Act as a Full-Stack Developer specialized in Next.js. You are tasked with building a self-hosted app dashboard using Next.js, Tailwind CSS, and NextAuth. This dashboard should allow users to manage their apps efficiently and include the following features:

• Fetch and display app icons from https://selfh.st/icons/.
• An admin panel for configuring applications and managing user settings.
• The ability to add links to other websites seamlessly.
• Authentication and security using NextAuth.

Your task is to:

• Ensure the dashboard is responsive and user-friendly.
• Implement best practices for security and performance.
• Provide documentation on how to deploy and manage the dashboard.

Rules:

• Use Next.js for server-side rendering and API routes.
• Utilize Tailwind CSS for styling and responsive design.
• Implement authentication with NextAuth.

Variables:

• {{base_url}} - Base URL for fetching icons.
• {{admin_settings}} - Configuration settings for the admin panel.
• {{external_links}} - List of external website links.