Adopt shared WebUI layout primitives

webui/src/features/portal/PortalPage.tsx

@@ -6,7 +6,7 @@ import {
   useState,
   type FormEvent
 } from "react";
-import {
+import { ActionToolbar,
   ActionBlockerHint,
   DismissibleAlert,
   Button,
@@ -127,7 +127,7 @@ export default function PortalPage({ settings }: PlatformRouteContext) {
   return (
     <main className="portal-page">
       <div className="portal-shell">
-        <div className="portal-toolbar">
+        <ActionToolbar className="portal-toolbar">
           <form className="portal-search" onSubmit={submit}>
             <Search size={17} aria-hidden="true" />
             <input
@@ -147,7 +147,7 @@ export default function PortalPage({ settings }: PlatformRouteContext) {
             checked={includeUnavailable}
             onChange={setIncludeUnavailable}
           />
-        </div>
+        </ActionToolbar>
 
         <div className="portal-result-summary" aria-live="polite">
           <strong>{counts.available}</strong> available