Modify site URL and enhance sitemap configuration

Updated site URL to include trailing slash and added sitemap filter to exclude specific pages.

astro.config.mjs

@@ -4,18 +4,24 @@ import { defineConfig } from 'astro/config';
 import react from '@astrojs/react';
 import tailwindcss from '@tailwindcss/vite';
 import vercel from '@astrojs/vercel';
-
 import basicSsl from '@vitejs/plugin-basic-ssl';
 import sitemap from '@astrojs/sitemap';
 
 // https://astro.build/config
 export default defineConfig({
-  site: 'https://crischarles.com',
+  site: 'https://crischarles.com/',
+  trailingSlash: 'never',
   output: 'server',
   adapter: vercel(),
   integrations: [
     react(),
-    sitemap()
+    sitemap({
+      filter: (page) =>
+        !page.includes('/api/') &&
+        !page.includes('/maintenance') &&
+        !page.includes('/chat') &&
+        !page.includes('/_image')
+    })
   ],
 
   vite: {