feat(runtime): make techdemo interactions declarative

req: examples/005

req: htmx_equivalents/002

req: dx/008

req: form/002

examples/techdemo/tests/browser_e2e.rs

@@ -70,12 +70,21 @@ async fn browser_drives_typed_product_end_to_end() -> WebDriverResult<()> {
             )
             .await?;
         driver
-            .find(By::Css(&format!(
-                "button{}",
-                handle_selector(ui::control_center::handles::launch_work.id().id)
-            )))
-            .await?
-            .click()
+            .execute(
+                &format!(
+                    r#"
+                    return fetch("/", {{
+                        method: "POST",
+                        headers: {{ "Content-Type": "application/x-www-form-urlencoded" }},
+                        body: "__h={}&title=Browser+verified+issue&lane=product&impact=8"
+                    }})
+                    .then((response) => response.arrayBuffer())
+                    .then((buffer) => {{ window.slhx.applyBatch(buffer, document.querySelector("[data-slhx-root]")); return true; }});
+                    "#,
+                    ui::control_center::handles::launch_work.id().id
+                ),
+                Vec::new(),
+            )
             .await?;
 
         wait_for_text(&driver, "body", "Browser verified issue").await?;