Combine llms.txt generation with website data generation

- Move llms.txt generation into generate-website-data.mjs
- Remove standalone generate-llms-txt.mjs script
- Remove llms:generate npm script
- llms.txt now outputs to website/public/data/ alongside other generated files

eng/generate-website-data.mjs

@@ -696,6 +696,84 @@ function generateSamplesData() {
   };
 }
 
+/**
+ * Generate llms.txt content according to the llmstxt.org specification
+ */
+function generateLlmsTxt(agents, prompts, instructions, skills) {
+  let content = "";
+
+  // H1 header (required)
+  content += "# Awesome GitHub Copilot\n\n";
+
+  // Summary blockquote (optional but recommended)
+  content +=
+    "> A community-driven collection of custom agents, prompts, instructions, and skills to enhance GitHub Copilot experiences across various domains, languages, and use cases.\n\n";
+
+  // Add overview section
+  content += "## Overview\n\n";
+  content +=
+    "This repository provides resources to customize and enhance GitHub Copilot:\n\n";
+  content +=
+    "- **Agents**: Specialized GitHub Copilot agents that integrate with MCP servers\n";
+  content +=
+    "- **Prompts**: Task-specific prompts for code generation and problem-solving\n";
+  content +=
+    "- **Instructions**: Coding standards and best practices applied to specific file patterns\n";
+  content +=
+    "- **Skills**: Self-contained folders with instructions and bundled resources for specialized tasks\n\n";
+
+  // Process Agents
+  content += "## Agents\n\n";
+  for (const agent of agents) {
+    const description = (agent.description || "No description available").replace(/\s+/g, " ").trim();
+    content += `- [${agent.title}](${agent.path}): ${description}\n`;
+  }
+  content += "\n";
+
+  // Process Prompts
+  content += "## Prompts\n\n";
+  for (const prompt of prompts) {
+    const description = (prompt.description || "No description available").replace(/\s+/g, " ").trim();
+    content += `- [${prompt.title}](${prompt.path}): ${description}\n`;
+  }
+  content += "\n";
+
+  // Process Instructions
+  content += "## Instructions\n\n";
+  for (const instruction of instructions) {
+    const description = (instruction.description || "No description available").replace(/\s+/g, " ").trim();
+    content += `- [${instruction.title}](${instruction.path}): ${description}\n`;
+  }
+  content += "\n";
+
+  // Process Skills
+  content += "## Skills\n\n";
+  for (const skill of skills) {
+    const description = (skill.description || "No description available").replace(/\s+/g, " ").trim();
+    content += `- [${skill.title}](${skill.skillFile}): ${description}\n`;
+  }
+  content += "\n";
+
+  // Add documentation links
+  content += "## Documentation\n\n";
+  content +=
+    "- [README.md](README.md): Main documentation and getting started guide\n";
+  content +=
+    "- [CONTRIBUTING.md](CONTRIBUTING.md): Guidelines for contributing to this repository\n";
+  content +=
+    "- [CODE_OF_CONDUCT.md](CODE_OF_CONDUCT.md): Community standards and expectations\n";
+  content += "- [SECURITY.md](SECURITY.md): Security policies and reporting\n";
+  content += "- [AGENTS.md](AGENTS.md): Project overview and setup commands\n\n";
+
+  // Add repository information
+  content += "## Repository\n\n";
+  content += "- **GitHub**: https://github.com/github/awesome-copilot\n";
+  content += "- **License**: MIT\n";
+  content += "- **Website**: https://github.github.io/awesome-copilot\n";
+
+  return content;
+}
+
 /**
  * Main function
  */
@@ -817,6 +895,11 @@ async function main() {
   );
 
   console.log(`\n✓ All data written to website/public/data/`);
+
+  // Generate llms.txt
+  const llmsTxtContent = generateLlmsTxt(agents, prompts, instructions, skills);
+  fs.writeFileSync(path.join(WEBSITE_DATA_DIR, "llms.txt"), llmsTxtContent, "utf8");
+  console.log(`✓ llms.txt generated with ${agents.length} agents, ${prompts.length} prompts, ${instructions.length} instructions, ${skills.length} skills`);
 }
 
 main().catch((err) => {