CE-WP-0008: fix capture field values and viewport scroll retry

- Wire fieldValues state in FormsApp so controlled inputs persist typed data
- Add runScrollToHighlightJob with rAF retries when utils/highlights not ready
- Re-trigger scroll when highlights update after PDF load
- Tests: scroll-job unit test, forms-field-values integration tests
- Workplan CE-WP-0008 marked done

src/app/forms/FormsApp.tsx

@@ -64,9 +64,14 @@ export function FormsApp() {
     [schema],
   );
 
+  const [fieldValues, setFieldValues] = useState<Record<string, string>>({});
   const [showAddFieldForm, setShowAddFieldForm] = useState(false);
   const [editingFieldId, setEditingFieldId] = useState<string | null>(null);
 
+  const handleFieldValueChange = useCallback((fieldId: string, value: string) => {
+    setFieldValues((prev) => ({ ...prev, [fieldId]: value }));
+  }, []);
+
   const nextFieldId = useCallback((fields: readonly FormFieldSchema[]): string => {
     let max = 0;
     for (const f of fields) {
@@ -119,6 +124,8 @@ export function FormsApp() {
         <ViewerShell />
         <FormPane
           schema={schema}
+          fieldValues={fieldValues}
+          onFieldValueChange={handleFieldValueChange}
           showAddFieldForm={showAddFieldForm}
           editingFieldId={editingFieldId}
           onRequestAddField={() => {
@@ -156,6 +163,8 @@ function ScrollBridge() {
 
 function FormPane({
   schema,
+  fieldValues,
+  onFieldValueChange,
   showAddFieldForm,
   editingFieldId,
   onRequestAddField,
@@ -166,6 +175,8 @@ function FormPane({
   onCancelFieldEdit,
 }: {
   schema: FormSchema;
+  fieldValues: Readonly<Record<string, string>>;
+  onFieldValueChange: (fieldId: string, value: string) => void;
   showAddFieldForm: boolean;
   editingFieldId: string | null;
   onRequestAddField: () => void;
@@ -253,6 +264,8 @@ function FormPane({
       {document ? (
         <FormRenderer
           schema={schema}
+          values={fieldValues}
+          onValueChange={onFieldValueChange}
           linkCounts={linkCounts}
           linkHints={linkHints}
           showAddFieldForm={showAddFieldForm}