Hero becomes a content-owned module; site asset proxy; gesture growth fix

site.yaml's hero is now plain | module, where module names a
JavaScript file the content repo ships (mount(container) -> handle
with stop()). Portal serves content assets same-origin at
/site/<path> (Gitea raw sends no CORS headers), starts the module at
HTML parse time, adopts it on hydration, mounts fresh via the inline
script's __mountHero on client-side navigation, and stops it on
leave. The YES canvas (yes.js) and the gesture hero mode leave the
engine - uhhm/questions ships YES as its hero.js, redoal/questions
ships a sine-swings band. Gesture form canvas no longer balloons after
a stroke: the wrap's aspect-ratio reservation is scoped to :empty
(pre-mount) so it can't turn echo-strip height into width inside the
flex field.

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

src/main.rs

@@ -29,6 +29,7 @@ async fn main() -> anyhow::Result<()> {
         .unwrap_or_else(|_| "https://project.uhhm.no/uhhm/questions".to_string());
     let content_branch = std::env::var("CONTENT_BRANCH").unwrap_or_else(|_| "main".to_string());
     let gitea_base = content::gitea_api_base(&content_repo)?;
+    let content_raw_base = content::gitea_raw_base(&content_repo)?;
     let aggregates = content::load_aggregates_from_gitea(&content_repo, &content_branch).await?;
     let questions = content::load_questions_from_gitea(&content_repo, &content_branch, "questions").await?;
     content::validate_questions(&questions, &aggregates)?;
@@ -67,7 +68,7 @@ async fn main() -> anyhow::Result<()> {
     tokio::spawn(content::watch_for_reload(
         nats.clone(),
         content_repo,
-        content_branch,
+        content_branch.clone(),
         "questions".to_string(),
         questions.clone(),
         aggregates.clone(),
@@ -82,6 +83,8 @@ async fn main() -> anyhow::Result<()> {
         aggregates,
         site,
         gitea_base,
+        content_raw_base,
+        content_branch: content_branch.clone(),
         oidc: oidc_state,
         garage,
     };
@@ -129,10 +132,6 @@ async fn main() -> anyhow::Result<()> {
     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);
-    // yes.js sits in public/ (not a wasm-bindgen snippet) so the
-    // hero's inline early-mount script and the wasm binding can share
-    // one stable URL - see `mod yes` in app.rs.
-    let yes_path = format!("{}/yes.js", leptos_options.site_root);
     let fonts_dir = format!("{}/fonts", leptos_options.site_root);
 
     let app = Router::new()
@@ -142,6 +141,8 @@ async fn main() -> anyhow::Result<()> {
         .route("/api/{*fn_name}", any(server_fn_handler))
         .route("/upload", post(upload::upload))
         .route("/gitea-repo", get(content::gitea_repo_handler))
+        // Content-shipped assets (hero module etc.), same-origin.
+        .route("/site/{*path}", get(content::site_asset_handler))
         .route("/automation/kv/{bucket}", get(content::automation_kv_handler))
         // no-cache = "revalidate before reuse", not "don't cache":
         // pkg files keep the same names across releases (portal.js,
@@ -167,17 +168,6 @@ async fn main() -> anyhow::Result<()> {
             "/swiper-element-bundle.min.js",
             ServeFile::new(swiper_path),
         )
-        // Same skew concern as /pkg: the wasm's raw_module import and
-        // the hero's inline script both load this by fixed name.
-        .route_service(
-            "/yes.js",
-            tower::ServiceBuilder::new()
-                .layer(tower_http::set_header::SetResponseHeaderLayer::overriding(
-                    axum::http::header::CACHE_CONTROL,
-                    axum::http::HeaderValue::from_static("no-cache"),
-                ))
-                .service(ServeFile::new(yes_path)),
-        )
         .leptos_routes_with_context(
             &state,
             routes,