Add llms.txt file for LLM guidance

[Copilot]

This PR adds an llms.txt file to provide guidance for Large Language Models about the website's content and structure, following the specification at https://llmstxt.org/.

Changes Made

1. Created llms.txt file

Added a comprehensive llms.txt file in the root directory that includes:

• Overview: Description of the website as a personal learning/documentation site
• Content Guidelines: Explanation that content is based on personal experience and learning
• Site Structure: Directory-by-directory breakdown of content organization
• Usage Guidelines: Instructions for LLMs on how to properly reference and cite content
• Contact Information: Links to GitHub profile and website

2. Updated Build Configuration

Modified _config.ts to include the new file in the build output:

site.copy("LICENSE");
site.copy("humans.txt");
site.copy("llms.txt");  // Added this line
site.copy("404.html");

This follows the same pattern as the existing humans.txt file, ensuring the llms.txt file will be accessible at /llms.txt when the site is deployed.

3. Code Formatting

Applied proper code formatting using deno fmt to maintain consistency with project standards.

Implementation Notes

The llms.txt file provides essential context about:

• The personal and educational nature of the content
• Different content types across various directories (/dive-into/, /java/, /python/, etc.)
• Appropriate attribution and verification guidelines for LLMs
• The experimental nature of the site as a Lume/Deno learning project

This will help LLMs better understand the context and appropriate usage of the website's content.

Fixes #37.

Warning

Firewall rules blocked me from connecting to one or more addresses

I tried to connect to the following addresses, but was blocked by firewall rules:

• canonical-bos01.cdn.snapcraftcontent.com
• cdn.jsdelivr.net
  • Triggering command: deno check _config.ts (dns block)
• dl.deno.land
  • Triggering command: curl -s REDACTED (dns block)
  • Triggering command: deno run --allow-all --unsafely-ignore-certificate-errors REDACTED (dns block)
• esm.sh
  • Triggering command: deno check _config.ts (dns block)
• esm.ubuntu.com
  • Triggering command: /usr/lib/apt/methods/https (dns block)
• example.com
  • Triggering command: curl -s REDACTED (dns block)
• https://api.github.com/repos/llmstxt/spec
  • Triggering command: curl -s REDACTED (http block)
• jsr.io
  • Triggering command: deno run --allow-all --unsafely-ignore-certificate-errors REDACTED (dns block)
  • Triggering command: deno check _config.ts (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

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