web: the studio header carries the mark and the page name too

The landing, /admin and /profile all show the icon + RecipesCam wordmark
with the page name beside it; the studio still showed a bare "RecipesCam
web" text. Same pair now, so the phone header says where the visitor is.

docker/frontend/src/ui/TopBar.tsx

@@ -48,8 +48,10 @@ export function TopBar({
   return (
     <header className="header" ref={wrap}>
       <a className="brand" href="/">
-        RecipesCam <small>web</small>
+        <img src="/assets/RecipesCamIcon.png" alt="" width="26" height="26" />
+        <span>Recipes<em>Cam</em></span>
       </a>
+      <b className="page-name">{t('nav.studio')}</b>
       <span className="recipe-name">{recipeName}</span>
       <span className="spacer" />