docs: implement versioning support

.gitignore

@@ -1,29 +1,7 @@
-# ============================================================================
-# Docusaurus Migration - Updated .gitignore
-# ============================================================================
-
-# PRESERVE: Legacy Sphinx versions (frozen documentation)
-# ✅ docs/legacy/v0.2.11/ through docs/legacy/v0.2.22/ - TRACKED
-# ✅ docs/versionsArchived.json - TRACKED
-# ✅ docs/index.html - TRACKED (root redirect)
-# ✅ docs/.nojekyll - TRACKED (GitHub Pages config)
-
-# IGNORE: Generated Docusaurus build output (rebuilt from main repo)
-docs/docs/
-docs/assets/
-docs/js/
-docs/css/
-docs/img/
-docs/fonts/
-docs/*.js
-docs/*.css
-docs/*.map
-docs/manifest.json
-docs/sitemap.xml
-docs/robots.txt
-docs/404.html
+# Generated Docusaurus build output
+docs/
 
-# IGNORE: Node.js dependencies and build artifacts
+# Node.js dependencies and build artifacts
 node_modules/
 npm-debug.log*
 yarn-debug.log*
@@ -33,15 +11,15 @@ yarn-error.log*
 package-lock.json
 yarn.lock
 
-# IGNORE: Docusaurus build cache
+# Docusaurus build cache
 .docusaurus/
 build/
 
-# IGNORE: Legacy Sphinx build artifacts (keep content, ignore build files)
+# Legacy Sphinx build artifacts
 _build/
 .sphinx/
 
-# IGNORE: Python artifacts
+# Python artifacts
 __pycache__/
 *.py[cod]
 *$py.class
@@ -51,37 +29,23 @@ env/
 venv/
 .venv/
 
-# IGNORE: IDE files
+# IDE files
 .vscode/
 .idea/
 *.swp
 *.swo
 *~
 
-# IGNORE: OS files
+# OS files
 .DS_Store
 Thumbs.db
 
-# IGNORE: Logs and temporary files
+# Logs and temporary files
 *.log
 
 # Docusaurus build artefacts
 docs/
 
-# Docusaurus build cache
-.docusaurus/
-build/
-
-# Node.js dependencies and build artifacts
-node_modules/
-npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
-.npm
-.yarn-integrity
-package-lock.json
-yarn.lock
-
 # Claude
 CLAUDE.md
 .claude/settings.local.json