Alternative.images: array of urls, rendered as a Swiper card deck

image: Option<String> becomes images: Vec<String> (nothing in live
content used the old field). One url renders as the plain banner it
was; several become a swipeable cards-effect deck via Swiper Element
12.2.0, vendored into public/ (MIT) like prosekit-editor.js/yes.js
rather than pulled from a CDN - the bundle only loads on pages where
some alternative actually declares more than one image.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/main.rs

@@ -124,6 +124,7 @@ async fn main() -> anyhow::Result<()> {
     let favicon_light_path = format!("{}/favicon-light.svg", leptos_options.site_root);
     let favicon_dark_path = format!("{}/favicon-dark.svg", leptos_options.site_root);
     let wordmark_path = format!("{}/wordmark.svg", leptos_options.site_root);
+    let swiper_path = format!("{}/swiper-element-bundle.min.js", leptos_options.site_root);
     let fonts_dir = format!("{}/fonts", leptos_options.site_root);
 
     let app = Router::new()
@@ -139,6 +140,10 @@ async fn main() -> anyhow::Result<()> {
         .route_service("/favicon-light.svg", ServeFile::new(favicon_light_path))
         .route_service("/favicon-dark.svg", ServeFile::new(favicon_dark_path))
         .route_service("/wordmark.svg", ServeFile::new(wordmark_path))
+        .route_service(
+            "/swiper-element-bundle.min.js",
+            ServeFile::new(swiper_path),
+        )
         .leptos_routes_with_context(
             &state,
             routes,