refactor(examples): inline simple board rendering

Remove one-line render_board wrappers now that generated render(view) is the concise composition helper, keeping board updates explicit without extra local bridge functions.

req: component/003

req: dx/006

examples/techdemo/src/main.rs

@@ -415,7 +415,7 @@ fn update_work(demo: &mut DemoState, id: Option<&str>, update: impl FnOnce(&mut
 fn demo_effects(demo: &DemoState, notice: &'static str) -> impl IntoEffect {
     (
         slots::hero_metrics.render(&hero_view(demo)),
-        slots::board.html(render_board(demo)),
+        slots::board.html(ui::render(&board_view(demo))),
         slots::activity.render(&activity_view(demo)),
         slots::inspector.render(&inspector_view(demo)),
         slots::notice.text(notice),
@@ -451,7 +451,7 @@ fn page_html(demo: &DemoState) -> String {
     // req: html_safety/002 req: view/001
     render_control_center(ControlCenter {
         hero: render_hero(demo),
-        board: render_board(demo),
+        board: ui::render(&board_view(demo)),
         inspector: render_inspector(demo),
         activity: render_activity(demo),
         island_snapshot: island_snapshot(demo),
@@ -504,11 +504,6 @@ fn board_view(demo: &DemoState) -> BoardLanes {
     BoardLanes { lanes }
 }
 
-fn render_board(demo: &DemoState) -> SafeHtml {
-    // req: html_safety/002 req: view/001 req: component/003
-    ui::render(&board_view(demo))
-}
-
 fn issue_card(item: &WorkItem, selected: bool) -> IssueCard {
     IssueCard {
         class: if selected {