feat: duplikovanie sablon cenoviek v editore (uloha 11)

Ikona Duplikovat pri sablone vytvori kopiu "(kopia)", hned ju ulozi
a otvori na upravu.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/components/editor/BadgeEditorModal.tsx

@@ -4,7 +4,22 @@ import React, { useState, useRef, useEffect } from 'react';
 import { BadgeTemplate, BadgeLayer } from '@/types/newsletter';
 import { supabase } from '@/lib/supabase';
 import { DEFAULT_BADGE_TEMPLATES, renderCleanBadgeSvg, svgToCleanPng } from '@/lib/badgeUtils';
-import { Tag, Plus, Check, Trash2, X, Upload, Eye, Move, AlignLeft, AlignCenter, AlignRight, ZoomIn, ZoomOut } from 'lucide-react';
+import { Tag, Plus, Check, Trash2, X, Upload, Eye, Move, AlignLeft, AlignCenter, AlignRight, ZoomIn, ZoomOut, Copy } from 'lucide-react';
+
+// Riadok tabuľky badges v Supabase pre danú šablónu
+function toBadgeDbPayload(badge: BadgeTemplate) {
+  return {
+    name: badge.name,
+    svg_raw: badge.svgRaw,
+    layers_config: {
+      layers: badge.layersConfig,
+      width: badge.width || 110,
+      align: badge.align || 'center',
+      paddingTop: badge.paddingTop ?? 4,
+      paddingBottom: badge.paddingBottom ?? 4
+    }
+  };
+}
 
 // Priblíženie plátna v editore: rozsah posuvníka a kroky tlačidiel +/−
 const CANVAS_ZOOM_MIN = 0.5;
@@ -401,6 +416,35 @@ export const BadgeEditorModal: React.FC<BadgeEditorModalProps> = ({
     });
   };
 
+  // Duplikovanie šablóny: kópia sa hneď uloží (Supabase, inak localStorage) a otvorí na úpravu
+  const duplicateBadgeTemplate = async (badge: BadgeTemplate) => {
+    const copy: BadgeTemplate = {
+      ...JSON.parse(JSON.stringify(badge)),
+      id: `badge-${Date.now()}`,
+      name: `${badge.name} (kópia)`
+    };
+    let saved = copy;
+    try {
+      const { data, error } = await supabase
+        .from('badges')
+        .insert([toBadgeDbPayload(copy)])
+        .select();
+      if (!error && data && data[0]) {
+        saved = { ...copy, id: data[0].id };
+      }
+    } catch (e) {}
+
+    const list = [...badges];
+    const idx = list.findIndex((b) => b.id === badge.id);
+    list.splice(idx + 1, 0, saved);
+    setBadges(list);
+    setActiveBadge(saved);
+    setSelectedLayerId(saved.layersConfig?.[0]?.id ?? null);
+    try {
+      localStorage.setItem('coop_custom_badges', JSON.stringify(list));
+    } catch (e) {}
+  };
+
   const deleteBadgeTemplate = async (badgeId: string) => {
     if (confirm('Naozaj chcete zmazať túto šablónu cenovky?')) {
       // Predvolené šablóny existujú len v prehliadači (localStorage), v databáze nie sú
@@ -423,17 +467,7 @@ export const BadgeEditorModal: React.FC<BadgeEditorModalProps> = ({
     if (!activeBadge) return;
     setIsSavingDb(true);
     try {
-      const payload: any = {
-        name: activeBadge.name,
-        svg_raw: activeBadge.svgRaw,
-        layers_config: {
-          layers: activeBadge.layersConfig,
-          width: activeBadge.width || 110,
-          align: activeBadge.align || 'center',
-          paddingTop: activeBadge.paddingTop ?? 4,
-          paddingBottom: activeBadge.paddingBottom ?? 4
-        }
-      };
+      const payload = toBadgeDbPayload(activeBadge);
 
       let savedBadge: BadgeTemplate | null = null;
       const isExistingUuid = activeBadge.id && !activeBadge.id.startsWith('badge-');
@@ -646,18 +680,30 @@ export const BadgeEditorModal: React.FC<BadgeEditorModalProps> = ({
                 >
                   <div className="flex items-center justify-between mb-1">
                     <p className="text-xs font-bold text-gray-800 truncate">{b.name}</p>
+                    <div className="flex items-center opacity-0 group-hover:opacity-100 transition-opacity">
+                    <button
+                      onClick={(e) => {
+                        e.stopPropagation();
+                        duplicateBadgeTemplate(b);
+                      }}
+                      className="text-gray-300 hover:text-blue-600 p-1 rounded transition-colors"
+                      title="Duplikovať šablónu"
+                    >
+                      <Copy className="w-3.5 h-3.5" />
+                    </button>
                     {/* Zmazať sa dá každá šablóna, aj staršie predvolené (badge-preset-*) uložené v prehliadači */}
                     <button
                       onClick={(e) => {
                         e.stopPropagation();
                         deleteBadgeTemplate(b.id);
                       }}
-                      className="text-gray-300 hover:text-red-600 p-1 rounded transition-colors opacity-0 group-hover:opacity-100"
+                      className="text-gray-300 hover:text-red-600 p-1 rounded transition-colors"
                       title="Zmazať šablónu"
                     >
                       <Trash2 className="w-3.5 h-3.5" />
                     </button>
                     </div>
+                  </div>
                   <div
                     className="w-full h-12 flex items-center justify-center transform scale-75 origin-center overflow-hidden pointer-events-none"
                     dangerouslySetInnerHTML={{