pregenerate location names and fix location forwarding

svelte.config.js

@@ -1,13 +1,34 @@
 import adapter from '@sveltejs/adapter-static';
 import { vitePreprocess } from '@sveltejs/vite-plugin-svelte';
+import fs from 'fs';
+import path from 'path';
 
 /** @type {import('@sveltejs/kit').Config} */
 const config = {
 	// Consult https://svelte.dev/docs/kit/integrations
 	// for more information about preprocessors
 	preprocess: vitePreprocess(),
-
-	kit: { adapter: adapter() }
+	kit: {
+		adapter: adapter(),
+		// Pregenerate city pages to improve SEO during static build
+		prerender: {
+			entries: (() => {
+				try {
+					const citiesPath = path.resolve('src/routes/weather/locations/city-names100.json');
+					const raw = fs.readFileSync(citiesPath, 'utf-8');
+					const cities = JSON.parse(raw);
+					if (Array.isArray(cities)) {
+						const cityEntries = cities.map((c) => `/weather/week/${c}`);
+						// Keep the default wildcard to include other routes
+						return ['*', ...cityEntries];
+					}
+				} catch {
+					// If anything goes wrong, fall back to default behavior
+				}
+				return ['*'];
+			})()
+		}
+	}
 };
 
 export default config;