Add Starlight documentation site structure

- Created comprehensive Diátaxis-based documentation
- 53 pages across Tutorials, How-to, Reference, and Explanation
- Custom branding with @astrojs/discovery logo
- Pagefind search integration
- Ready for content population

docs/.gitignore

@@ -0,0 +1,21 @@
+# build output
+dist/
+# generated types
+.astro/
+
+# dependencies
+node_modules/
+
+# logs
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+
+
+# environment variables
+.env
+.env.production
+
+# macOS-specific files
+.DS_Store