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/main.rs

@@ -226,7 +226,7 @@ fn parse_column(value: Option<&str>) -> usize {
 fn page_html(board: &BoardState) -> String {
     // Explicit full-page composition boundary for already-rendered hemplate fragments.
     // req: html_safety/002 req: view/001
-    board_ui::render_html(&Board {
+    board_ui::render(&Board {
         options: render_options(),
         board: render_board(board),
     })
@@ -262,7 +262,7 @@ fn shell(body: String) -> String {
 
 fn render_options() -> SafeHtml {
     // req: html_safety/002 req: view/001
-    ui::render_html(&ColumnOptions {
+    ui::render(&ColumnOptions {
         options: COLUMNS
             .iter()
             .map(|(id, title)| ColumnOption { id, title })
@@ -291,7 +291,7 @@ fn board_view(board: &BoardState) -> BoardColumns {
 
 fn render_board(board: &BoardState) -> SafeHtml {
     // req: html_safety/002 req: view/001
-    ui::render_html(&board_view(board))
+    ui::render(&board_view(board))
 }
 
 fn render_card(card: &Card) -> BoardCard {
@@ -354,7 +354,7 @@ mod tests {
     // req: html_safety/002 req: view/001 req: test/005
     #[test]
     fn presence_payload_is_rendered_by_a_hemplate_view() {
-        let html = ui::render_html(&Presence { count: 7 });
+        let html = ui::render(&Presence { count: 7 });
         let document = Html::parse_fragment(html.as_str());
         assert_eq!(document.select(&selector("span.presence")).count(), 2);
         assert_eq!(