feat: add documentation website with Docusaurus build pipeline (#1177)

* feat: add documentation website with Docusaurus build pipeline

* feat(docs): add AI discovery meta tags for llms.txt files

- Add global headTags with ai-terms, llms, llms-full meta tags
- Update landing page link to clarify AI context purpose

* fix(docs): restore accidentally deleted faq.md and glossary.md

Files were removed in 12dd97fe during path restructuring.

* fix(docs): update broken project-readme links to GitHub URL

* feat(schema): add compound trigger format validation

website/static/img/logo.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" width="100" height="100">
+  <rect width="100" height="100" rx="20" fill="#0d9488"/>
+  <text x="50" y="65" font-family="Arial, sans-serif" font-size="40" font-weight="bold" fill="white" text-anchor="middle">B</text>
+</svg>

website/static/robots.txt

@@ -0,0 +1,37 @@
+# BMAD Method Documentation
+# https://bmad-code-org.github.io/BMAD-METHOD/
+#
+# This file controls web crawler access to the documentation site.
+
+User-agent: *
+Allow: /
+
+# LLM-friendly documentation files
+# These are specifically designed for AI consumption
+# llms.txt - Concise overview with navigation
+# llms-full.txt - Complete documentation in plain text
+
+# AI Crawlers - Welcome!
+User-agent: GPTBot
+Allow: /
+
+User-agent: ChatGPT-User
+Allow: /
+
+User-agent: Google-Extended
+Allow: /
+
+User-agent: CCBot
+Allow: /
+
+User-agent: anthropic-ai
+Allow: /
+
+User-agent: Claude-Web
+Allow: /
+
+User-agent: cohere-ai
+Allow: /
+
+# Sitemap
+Sitemap: https://bmad-code-org.github.io/BMAD-METHOD/sitemap.xml