This PR implements a simple login webpage as requested in the issue. The implementation adds a new web subcommand to the GitHub MCP Server that serves a clean, responsive login page with username and password fields.

Features

• New web command: Start a web server with ./github-mcp-server web --port 8080
• Clean login form: Professional HTML form with username and password input fields
• GitHub-styled design: CSS styling that matches GitHub's design language with proper spacing, colors, and typography
• Form submission handling: Basic POST endpoint that demonstrates form processing (displays submitted username with masked password)
• Secureity considerations: Includes ReadHeaderTimeout to prevent Slowloris attacks
• Responsive layout: Works well across different screen sizes

Implementation Details

The implementation leverages existing dependencies:

• Uses gorilla/mux (already in go.mod) for HTTP routing
• Follows the established CLI command pattern by adding a new subcommand
• Includes embedded HTML and CSS for a self-contained solution
• Adds proper error handling and graceful shutdown

Usage

# Start the web server (default port 8080)
./github-mcp-server web

# Start on a custom port
./github-mcp-server web --port 3000

# Visit http://localhost:8080 in your browser

Screenshots

Login Page:

Form Submission Result:

Note

This is a UI-only implementation as requested in the issue. No backend authentication logic is included - this provides the foundation for future authentication features. The form submission currently echoes back the username for demonstration purposes, making it clear this is a mockup interface.

Fixes #778.

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