Add colorful disc logo to header

- Add animated CD logo next to CaseWrap Studio title
- Logo sized at 40px height for clean look
- Provides visual branding for the app

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

src/index.html

@@ -1391,7 +1391,7 @@
   <div class="app">
     <aside>
       <div class="appTitle">
-        <h1>CaseWrap Studio</h1>
+        <h1><img src="logo.gif" alt="CaseWrap" style="height: 40px; width: auto; vertical-align: middle; margin-right: 12px;" /> CaseWrap Studio</h1>
         <p class="subhead">Design printable case wraps and disc labels, then save, print, or share them on Nostr.</p>
       </div>