fix(examples): use lower-aware slot html updates

Move canonical examples and docs off direct RenderSlotExt render shortcuts so slot updates use generated render/lowering before HTML replacement, preserving runtime metadata for follow-up interactions.

req: component/003

req: runtime/001

req: dx/006

req: examples/003

examples/v0/src/lib.rs

@@ -5,7 +5,7 @@ pub mod ui {}
 mod tests {
     use super::ui::{auth, counter, notifications, page_swap, todos, wizard};
     use hemplate::Hemplate;
-    use slhx::{push, Effect, IntoEffect, NavigateMode, Payload, RenderKeyedSlotExt, RenderSlotExt};
+    use slhx::{push, Effect, IntoEffect, NavigateMode, Payload, RenderKeyedSlotExt};
     use slhx_test::inspect;
 
     #[derive(Clone, Debug)]
@@ -121,9 +121,9 @@ mod tests {
     fn page_swap_updates_content_and_history() {
         fn load_docs() -> impl IntoEffect {
             (
-                page_swap::slots::content.render(&DocsContent {
+                page_swap::slots::content.html(slhx::render(&DocsContent {
                     message: "This page was swapped.",
-                }),
+                })),
                 page_swap::slots::title.text("Docs"),
                 push("/docs"),
             )