feat(build): add concise render helper

Generate render(view) as the short page/fragment composition helper while keeping render_html(view) as an explicit compatibility alias, then move examples to the leaner happy path.

req: component/003

req: dx/006

req: view/001

examples/kanban/src/lib.rs

@@ -38,7 +38,7 @@ mod tests {
     // req: html_safety/002 req: view/001 req: test/005
     #[test]
     fn kanban_board_test_payload_is_rendered_by_a_hemplate_view() {
-        let html = super::ui::render_html(&empty_board());
+        let html = super::ui::render(&empty_board());
         let document = Html::parse_fragment(html.as_str());
         assert_eq!(document.select(&selector(".columns")).count(), 1);
     }