chore: update blog content for clarity, SEO, and performance improvements; refine sitemap handling and configuration settings

astro.config.ts

@@ -2,7 +2,6 @@ import { defineConfig } from 'astro/config'
 
 import mdx from '@astrojs/mdx'
 import react from '@astrojs/react'
-import sitemap from '@astrojs/sitemap'
 import icon from 'astro-icon'
 
 import expressiveCode from 'astro-expressive-code'
@@ -64,7 +63,7 @@ export default defineConfig({
           },
       },
     },
-  }), mdx(), react(), sitemap(), icon()],
+  }), mdx(), react(), icon()],
 
   vite: {
     plugins: [tailwindcss() as any],