feat: hide recap creation behind five goldfish logo taps

Replace the visible create button with a secret tap gesture that still
opens the PIN-protected recap flow.

Co-authored-by: Cursor <cursoragent@cursor.com>

public/index.html

@@ -18,13 +18,12 @@
     <header class="hero">
       <div class="heroInner">
         <div class="logoRow">
-          <img src="/icon.svg" alt="" class="logo" width="56" height="56">
+          <img src="/icon.svg" alt="" class="logo" id="goldfishLogo" width="56" height="56" title="Goldfish Recap">
           <div>
             <h1>Goldfish Recap</h1>
             <p class="tagline">Second Screen? Kein Problem. Dein Gehirn hat abgespeichert: nein. Wir: ja.</p>
           </div>
         </div>
-        <button type="button" class="btn btn-primary" id="newRecapBtn">+ Neues Recap</button>
       </div>
     </header>