docs(examples): hide batch internals from UI copy

Replace beginner-facing EffectBatch/slot-effect wording with generated update language while keeping wire-batch types in tests and low-level APIs.

req: dx/006

req: examples/003

examples/v0/src/main.rs

@@ -173,7 +173,7 @@ fn registry(state: Arc<ExampleState>) -> impl DispatchRegistry {
             // req: page_swap/002, req: examples/001
             (
                 page_swap::put(page_slots::content, &DocsContent {
-                    message: "This content came from an EffectBatch.",
+                    message: "This content came from a generated update response.",
                 }),
                 page_slots::title.text("Docs"),
                 push("/docs"),
@@ -257,7 +257,7 @@ mod tests {
     // req: html_safety/002 req: view/001 req: test/005
     #[test]
     fn docs_content_payload_is_rendered_by_a_hemplate_view() {
-        let html = render_docs_content("This content came from an EffectBatch.");
+        let html = render_docs_content("This content came from a generated update response.");
         let document = Html::parse_fragment(html.as_str());
         assert_eq!(
             document
@@ -271,7 +271,7 @@ mod tests {
                 .select(&selector("p"))
                 .next()
                 .map(|paragraph| paragraph.text().collect::<String>()),
-            Some("This content came from an EffectBatch.".to_owned())
+            Some("This content came from a generated update response.".to_owned())
         );
     }