chore(config): clean up ignore files and remove obsolete configuration files

package.json

@@ -21,7 +21,6 @@
 		"@astrojs/sitemap": "3.7.2",
 		"@pagefind/component-ui": "^1.5.2",
 		"@tailwindcss/vite": "4.3.0",
-		"@vercel/analytics": "^2.0.1",
 		"astro": "6.3.3",
 		"astro-expressive-code": "^0.42.0",
 		"astro-icon": "^1.1.5",