InstantAdPay banner kit (kie.ai): hero + leaderboard + rectangle in Promo tools

- 3 brand banners generated via kie.ai (mint-on-dark Web3 aesthetic), served from /banners/
- Promo tools Banners card now shows the kit with copy-image-URL

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

public/shorts.html

@@ -4,7 +4,7 @@
 <meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1">
 <title>Shorts | InstantAdPay</title>
 <link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Sora:wght@600;700;800&display=swap">
-<link rel="stylesheet" href="/assets/site.css?v=20260906g">
+<link rel="stylesheet" href="/assets/site.css?v=20260906h">
 <style>
   html,body{height:100%;margin:0;overflow:hidden;background:#000}
   .sh{position:fixed;inset:0;display:flex;flex-direction:column;background:#000;color:var(--ink,#e8fff7)}
@@ -43,6 +43,6 @@
     </div>
   </div>
 </div>
-<script src="/assets/shorts.js?v=20260906g"></script>
+<script src="/assets/shorts.js?v=20260906h"></script>
 </body>
 </html>