i18n

svelte.config.js

@@ -25,19 +25,39 @@ const config = {
 				console.warn(`prerender skipped ${path}: ${message}`);
 			},
 			entries: (() => {
+				// Locale lives in the path (see the paraglide config in vite.config.ts),
+				// so a localized URL is not a route SvelteKit can discover on its own -
+				// each one has to be listed. City pages are prerendered for the base
+				// locale only; the other languages reach them through the SPA fallback,
+				// which keeps the build from ballooning to cities × locales.
+				const locales = ['en', 'de', 'es', 'fr', 'it'];
+				const shared = [
+					'/weather/week',
+					'/weather/compare',
+					'/weather/14-day',
+					'/weather/seasonal',
+					'/weather/historical',
+					'/weather/maps',
+					'/about',
+					'/legal/imprint',
+					'/legal/privacy',
+					'/legal/terms'
+				];
+				const localized = locales.flatMap((locale) => shared.map((p) => `/${locale}${p}`));
+
 				try {
 					const citiesPath = path.resolve('src/routes/weather/locations/city-names100.json');
 					const raw = fs.readFileSync(citiesPath, 'utf-8');
 					const cities = JSON.parse(raw);
 					if (Array.isArray(cities)) {
-						const cityEntries = cities.map((c) => `/weather/week/${c}`);
+						const cityEntries = cities.map((c) => `/en/weather/week/${c}`);
 						// Keep the default wildcard to include other routes
-						return ['*', ...cityEntries];
+						return ['*', ...localized, ...cityEntries];
 					}
 				} catch {
 					// If anything goes wrong, fall back to default behavior
 				}
-				return ['*'];
+				return ['*', ...localized];
 			})()
 		}
 	}