Fix module canvas backgrounds, clear dummy badges, add SVG upload, new template creation, and {jednotkova_cena} variable

src/app/page.tsx

@@ -3,7 +3,7 @@
 import React, { useState, useEffect } from 'react';
 import { NewsletterCampaign, NewsletterModule, ProductItem, BadgeTemplate } from '@/types/newsletter';
 import { DEFAULT_CAMPAIGN, SUPABASE_ASSETS_BASE } from '@/lib/defaultCampaign';
-import { renderEmailHtml } from '@/lib/emailRenderer';
+import { renderEmailHtml, renderSingleModuleHtml } from '@/lib/emailRenderer';
 import { supabase } from '@/lib/supabase';
 import { TopBar } from '@/components/editor/TopBar';
 import { ConfigPanel } from '@/components/editor/ConfigPanel';
@@ -409,13 +409,10 @@ export default function Home() {
                     </div>
                   )}
 
-                  {/* Vykreslenie modulu bez vnútorných medzier navyše */}
+                  {/* Vykreslenie čistého modulu bez obaľovacieho gradientu na každom bloku */}
                   <div
                     dangerouslySetInnerHTML={{
-                      __html: renderEmailHtml({
-                        ...campaign,
-                        modules: [mod]
-                      })
+                      __html: renderSingleModuleHtml(mod, campaign)
                     }}
                     className="pointer-events-none"
                   />
@@ -454,6 +451,7 @@ export default function Home() {
         currentDiscount={targetProduct?.discountText || '25%'}
         currentPriceMain={targetProduct?.priceMain || '1'}
         currentPriceSub={targetProduct?.priceSub || '99'}
+        currentUnitPrice={targetProduct?.unitPrice || '1kg = 4,91 €'}
       />
     </div>
   );