feat: moznost zmazat aj predvolene cenovky (uloha 10)

Stare predvolene sablony (badge-preset-*) ostali ulozene v localStorage
a nedali sa zmazat. Tlacidlo kosa je teraz pri kazdej sablone; pri
predvolenych sa preskoci mazanie v databaze, kde nie su.

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

src/components/editor/BadgeEditorModal.tsx

@@ -403,9 +403,12 @@ export const BadgeEditorModal: React.FC<BadgeEditorModalProps> = ({
 
   const deleteBadgeTemplate = async (badgeId: string) => {
     if (confirm('Naozaj chcete zmazať túto šablónu cenovky?')) {
-      try {
-        await supabase.from('badges').delete().eq('id', badgeId);
-      } catch (e) {}
+      // Predvolené šablóny existujú len v prehliadači (localStorage), v databáze nie sú
+      if (!badgeId.startsWith('badge-preset-')) {
+        try {
+          await supabase.from('badges').delete().eq('id', badgeId);
+        } catch (e) {}
+      }
       const remaining = badges.filter((b) => b.id !== badgeId);
       setBadges(remaining);
       setActiveBadge(remaining[0] || null);
@@ -643,18 +646,17 @@ 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>
-                    {!b.id.startsWith('badge-preset-') && (
-                      <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"
-                        title="Zmazať šablónu"
-                      >
-                        <Trash2 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"
+                      title="Zmazať šablónu"
+                    >
+                      <Trash2 className="w-3.5 h-3.5" />
+                    </button>
                   </div>
                   <div
                     className="w-full h-12 flex items-center justify-center transform scale-75 origin-center overflow-hidden pointer-events-none"