fix(forms): expose selectedcontent inner text without a box

moli-renderer-v8/src/native_bridge/element/content.rs

@@ -13,6 +13,7 @@ use super::super::{
     JsContextHost, document::set_detached_text_replacement_value,
     node::node_runtime_and_handle_from_object_or_detached, throw_dom_exception,
 };
+use super::geometry::observable_client_rects;
 use super::{
     html_element_getter_receiver, html_element_setter_receiver, observable_sources_with_fragments,
     property_string_value,
@@ -817,6 +818,29 @@ fn node_inner_text(
     if rendered_state.box_state() == ElementBoxState::NoBox {
         return Ok(node.text_content(runtime.dom_host().dom()));
     }
+    // The lightweight rendered-state path derives box presence from computed
+    // display values. A selectedcontent element can still have no box when
+    // its native select ancestor suppresses author children. Consult the
+    // actual layout surface for this control-specific boundary so innerText
+    // follows its required textContent fallback. Once a customizable select
+    // produces real child boxes, its non-empty rect list keeps it on the
+    // normal rendered-text path.
+    if runtime
+        .dom_host()
+        .selectedcontent_nearest_ancestor_select(handle)
+        .is_some()
+        && rendered_state
+            .target_style()
+            .is_some_and(|style| style.display != ComputedDisplayKind::Contents)
+        && observable_client_rects(
+            runtime,
+            handle,
+            moli_layout::LayoutFlushReason::SynchronousGeometry,
+        )?
+        .is_empty()
+    {
+        return Ok(node.text_content(runtime.dom_host().dom()));
+    }
 
     let mut writer = InnerTextWriter::default();
     append_inner_text(

moli-renderer-v8/src/runtime/phase_one/tests/extracted/tree_mutations_and_document_write.rs

@@ -1446,6 +1446,7 @@ const selectedcontent = document.getElementById('selectedcontent');
 const sourceSpan = document.querySelector('#one > span');
 window.selectedcontentState = [
   selectedcontent.textContent.trim(),
+  selectedcontent.innerText.trim(),
   selectedcontent.firstElementChild !== sourceSpan,
 ];
 select.value = 'two';
@@ -1468,7 +1469,7 @@ window.selectedcontentState.push(selectedcontent.textContent.trim());
                 .expect("selectedcontent parser state should evaluate");
             assert_eq!(
                 result.get("value").and_then(serde_json::Value::as_str),
-                Some(r#"["one",true,"two","STRONG","updated","one"]"#),
+                Some(r#"["one","one",true,"two","STRONG","updated","one"]"#),
                 "parser option completion and select setters must synchronously clone the selected option children"
             );
         }));

moli-renderer-v8/src/script_vm/tests/dom_xhr/dom/rendered_text.rs

@@ -89,6 +89,34 @@ fn dom_parser_inner_text_is_html_only() {
     );
 }
 
+#[test]
+fn selectedcontent_inner_text_falls_back_when_its_select_child_box_is_suppressed() {
+    let mut vm = new_parsed_test_vm(
+        "https://selectedcontent-inner-text.test/",
+        "<!doctype html><html><body><div id=before>before</div></body></html>",
+    );
+
+    let result = vm
+        .eval(
+            r#"
+void document.body.innerText;
+const select = document.createElement('select');
+select.innerHTML = '<button><selectedcontent id="selectedcontent">default</selectedcontent></button><option>one</option>';
+select.style.appearance = 'base-select';
+document.body.append(select);
+const selectedcontent = document.getElementById('selectedcontent');
+[
+  selectedcontent.textContent,
+  selectedcontent.innerText,
+  selectedcontent.getClientRects().length
+].join('|')
+"#,
+        )
+        .expect("selectedcontent innerText should evaluate");
+
+    assert_eq!(result, "one|one|0");
+}
+
 #[test]
 fn live_inner_text_applies_inline_text_transform() {
     let mut vm = new_rendered_test_vm(