feat: SEO, PWA, and performance optimizations

- Add sitemap.xml endpoint and update robots.txt for SEO - Improve
manifest.json with richer metadata and categories - Add meta tags for
social sharing and accessibility - Preload critical assets and fonts for
faster loading - Optimize login background image and resource hints -
Enhance service worker for better caching strategies - Add security
headers to server responses - Update Vite config for chunking and
dependency optimization - Add logboek.md for project tracking

vite.config.ts

@@ -4,5 +4,19 @@ import { defineConfig } from 'vite';
 
 export default defineConfig({
 	plugins: [tailwindcss(), sveltekit()],
-	preview: { allowedHosts: ['ziasvannes.tech'] }
+	preview: { allowedHosts: ['ziasvannes.tech'] },
+	build: {
+		target: 'es2020',
+		cssCodeSplit: true,
+		rollupOptions: {
+			output: {
+				manualChunks: {
+					maplibre: ['maplibre-gl', 'svelte-maplibre']
+				}
+			}
+		}
+	},
+	optimizeDeps: {
+		include: ['maplibre-gl', 'svelte-maplibre']
+	}
 });