Use JOKER-3.svg for the colorful joker

Point JOKER-COLOR at /cards/JOKER-3.svg instead of JOKER-1.svg.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "shelem",
-  "version": "1.1.5",
+  "version": "1.1.6",
   "description": "Shelem card game — multiplayer",
   "main": "server.js",
   "scripts": {

public/app.js

@@ -235,7 +235,7 @@ function show(id) { const el = $(id); if (el) el.classList.remove('hidden'); }
 function hide(id) { const el = $(id); if (el) el.classList.add('hidden'); }
 
 function cardSvg(code) {
-  if (code === 'JOKER-COLOR') return '/cards/JOKER-1.svg';
+  if (code === 'JOKER-COLOR') return '/cards/JOKER-3.svg';
   if (code === 'JOKER-BLACK') return '/cards/JOKER-2.svg';
   const [suit, rank] = code.split('-');
   const suitMap = { C: 'CLUB', D: 'DIAMOND', H: 'HEART', S: 'SPADE' };