Add Google Analytics (G-GL7RRCK8GN) to docs site

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: markshust

docs/astro.config.mjs

@@ -35,6 +35,14 @@ export default defineConfig({
 				'@fontsource/jetbrains-mono/600.css',
 			],
 			head: [
+				{
+					tag: 'script',
+					attrs: { async: true, src: 'https://www.googletagmanager.com/gtag/js?id=G-GL7RRCK8GN' },
+				},
+				{
+					tag: 'script',
+					content: `window.dataLayer=window.dataLayer||[];function gtag(){dataLayer.push(arguments);}gtag('js',new Date());gtag('config','G-GL7RRCK8GN');`,
+				},
 				{
 					tag: 'meta',
 					attrs: {