feat: vlastna PNG cenovka pre vynimocny produkt (uloha 16)

- pri produkte aj vernostnom produkte sa da nahrat cela cenovka ako PNG,
  ktora prekryje generovanu sablonu
- tlacidlo Odstranit PNG vrati generovanu cenovku (sablona ostava zachovana)
- hromadne pouzitie cenovky (sekcia / cely newsletter) produkty s PNG neprepisuje

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

src/app/page.tsx

@@ -572,7 +572,8 @@ export default function Home() {
             ...m,
             data: {
               ...m.data,
-              products: (m.data.products || []).map((prod: any) => ({
+              // Produkty s vlastnou PNG cenovkou (výnimky) sa neprepisujú
+              products: (m.data.products || []).map((prod: any) => prod.customBadgePngUrl ? prod : ({
                 ...prod,
                 badgeId: badge.id,
                 badgeCustomTemplate: badge,
@@ -580,8 +581,7 @@ export default function Home() {
                 badgeAlign: badge.align ?? prod.badgeAlign ?? 'center',
                 badgePaddingTop: badge.paddingTop ?? prod.badgePaddingTop ?? 4,
                 badgePaddingBottom: badge.paddingBottom ?? prod.badgePaddingBottom ?? 4,
-                badgeLayout: badgeLayout ?? prod.badgeLayout,
-                customBadgePngUrl: undefined
+                badgeLayout: badgeLayout ?? prod.badgeLayout
               }))
             }
           };

src/components/editor/ConfigPanel.tsx

@@ -26,6 +26,29 @@ interface ConfigPanelProps {
   availableBadges?: BadgeTemplate[];
 }
 
+// Nahratie celej cenovky ako PNG pre výnimočný produkt (prekryje šablónu)
+const CustomBadgePngInput: React.FC<{ value?: string; onChange: (url: string) => void }> = ({ value, onChange }) => (
+  <div className="p-2.5 rounded-xl border border-dashed border-amber-300 bg-amber-50/60 space-y-1.5">
+    <ImageUploadInput
+      label="Vlastná PNG cenovka (výnimka)"
+      value={value || ''}
+      onChange={onChange}
+      placeholder="Nahrajte celú cenovku ako PNG"
+    />
+    {value ? (
+      <button
+        type="button"
+        onClick={() => onChange('')}
+        className="w-full py-1.5 text-[11px] font-bold text-amber-800 bg-white hover:bg-amber-100 border border-amber-300 rounded-lg transition-colors"
+      >
+        Odstrániť PNG a vrátiť generovanú cenovku
+      </button>
+    ) : (
+      <p className="text-[10px] text-amber-800/80">Nahraná PNG nahradí generovanú cenovku len pri tomto produkte.</p>
+    )}
+  </div>
+);
+
 export const ConfigPanel: React.FC<ConfigPanelProps> = ({
   module,
   onUpdateModule,
@@ -731,6 +754,16 @@ export const ConfigPanel: React.FC<ConfigPanelProps> = ({
                     </select>
                   </div>
 
+                  {/* Vlastná PNG cenovka (výnimka): prekryje šablónu, po odstránení sa vráti generovaná */}
+                  <CustomBadgePngInput
+                    value={p.customBadgePngUrl}
+                    onChange={(url) => {
+                      const products = [...module.data.products];
+                      products[pIdx].customBadgePngUrl = url || undefined;
+                      updateData({ products });
+                    }}
+                  />
+
                   {/* Tlačidlá aplikácie cenovky */}
                   {p.badgeCustomTemplate && (
                     <div className="space-y-1.5">
@@ -738,7 +771,8 @@ export const ConfigPanel: React.FC<ConfigPanelProps> = ({
                         type="button"
                         onClick={() => {
                           if (confirm(`Naozaj chcete aplikovať šablónu "${p.badgeCustomTemplate?.name}" na všetky produkty v tejto sekcii?`)) {
-                            const products = (module.data.products || []).map((prod: ProductItem) => ({
+                            // Produkty s vlastnou PNG cenovkou (výnimky) sa neprepisujú
+                            const products = (module.data.products || []).map((prod: ProductItem) => prod.customBadgePngUrl ? prod : ({
                               ...prod,
                               badgeCustomTemplate: p.badgeCustomTemplate,
                               badgeId: p.badgeCustomTemplate?.id,
@@ -746,8 +780,7 @@ export const ConfigPanel: React.FC<ConfigPanelProps> = ({
                               badgeAlign: p.badgeAlign || p.badgeCustomTemplate?.align || 'center',
                               badgePaddingTop: p.badgePaddingTop ?? p.badgeCustomTemplate?.paddingTop ?? 4,
                               badgePaddingBottom: p.badgePaddingBottom ?? p.badgeCustomTemplate?.paddingBottom ?? 4,
-                              badgeLayout: p.badgeLayout || 'below',
-                              customBadgePngUrl: undefined
+                              badgeLayout: p.badgeLayout || 'below'
                             }));
                             updateData({ products });
                           }
@@ -1347,6 +1380,7 @@ export const ConfigPanel: React.FC<ConfigPanelProps> = ({
                         if (val === 'default_loyalty') {
                           products[pIdx].badgeCustomTemplate = undefined;
                           products[pIdx].badgeId = undefined;
+                          products[pIdx].customBadgePngUrl = undefined;
                         } else {
                           const found = (availableBadges || []).find((b) => b.id === val);
                           if (found) {
@@ -1356,6 +1390,7 @@ export const ConfigPanel: React.FC<ConfigPanelProps> = ({
                             products[pIdx].badgeAlign = found.align ?? products[pIdx].badgeAlign ?? 'center';
                             products[pIdx].badgePaddingTop = found.paddingTop ?? products[pIdx].badgePaddingTop ?? 4;
                             products[pIdx].badgePaddingBottom = found.paddingBottom ?? products[pIdx].badgePaddingBottom ?? 4;
+                            products[pIdx].customBadgePngUrl = undefined;
                           }
                         }
                         updateData({ products });
@@ -1371,6 +1406,16 @@ export const ConfigPanel: React.FC<ConfigPanelProps> = ({
                     </select>
                   </div>
 
+                  {/* Vlastná PNG cenovka (výnimka): prekryje šablónu, po odstránení sa vráti generovaná */}
+                  <CustomBadgePngInput
+                    value={p.customBadgePngUrl}
+                    onChange={(url) => {
+                      const products = [...module.data.products];
+                      products[pIdx].customBadgePngUrl = url || undefined;
+                      updateData({ products });
+                    }}
+                  />
+
                   {/* Tlačidlá aplikácie cenovky */}
                   {p.badgeCustomTemplate && (
                     <div className="space-y-1.5">
@@ -1378,7 +1423,8 @@ export const ConfigPanel: React.FC<ConfigPanelProps> = ({
                         type="button"
                         onClick={() => {
                           if (confirm(`Naozaj chcete aplikovať šablónu "${p.badgeCustomTemplate?.name}" na všetky vernostné produkty?`)) {
-                            const products = (module.data.products || []).map((prod: any) => ({
+                            // Produkty s vlastnou PNG cenovkou (výnimky) sa neprepisujú
+                            const products = (module.data.products || []).map((prod: any) => prod.customBadgePngUrl ? prod : ({
                               ...prod,
                               badgeCustomTemplate: p.badgeCustomTemplate,
                               badgeId: p.badgeCustomTemplate?.id,
@@ -1458,7 +1504,7 @@ export const ConfigPanel: React.FC<ConfigPanelProps> = ({
                   )}
 
                   {/* Rýchle ovládanie veľkosti (Width), zarovnania a paddingu pre vernostnú cenovku */}
-                  {p.badgeCustomTemplate && (
+                  {(p.badgeCustomTemplate || p.customBadgePngUrl) && (
                     <div className="bg-gray-50 p-2.5 rounded-xl border border-gray-200 space-y-2">
                       {/* Šírka */}
                       <div>

src/lib/emailRenderer.ts

@@ -642,16 +642,7 @@ function renderExactProductCard(
 
   // Pomocná funkcia na render samotnej cenovky (bez obalového <td>)
   const renderBadgeContent = (bWidth: number, bAlign: string, padTop: number, padBottom: number, marginStyle: string) => {
-    if (p.badgeCustomTemplate) {
-      return `
-      <table role="presentation" cellspacing="0" cellpadding="0" border="0" align="${bAlign}" style="${marginStyle} width: ${bWidth}px; padding-top: ${padTop}px; padding-bottom: ${padBottom}px;">
-          <tr>
-              <td align="${bAlign}">
-                  ${renderCleanBadgeSvg(p.badgeCustomTemplate, p, bWidth)}
-              </td>
-          </tr>
-      </table>`;
-    }
+    // Vlastná PNG cenovka (výnimka) má prednosť pred šablónou; po jej odstránení sa vráti šablóna
     if (p.customBadgePngUrl) {
       return `
       <table role="presentation" cellspacing="0" cellpadding="0" border="0" align="${bAlign}" style="${marginStyle} width: ${bWidth}px; padding-top: ${padTop}px; padding-bottom: ${padBottom}px;">
@@ -662,6 +653,16 @@ function renderExactProductCard(
           </tr>
       </table>`;
     }
+    if (p.badgeCustomTemplate) {
+      return `
+      <table role="presentation" cellspacing="0" cellpadding="0" border="0" align="${bAlign}" style="${marginStyle} width: ${bWidth}px; padding-top: ${padTop}px; padding-bottom: ${padBottom}px;">
+          <tr>
+              <td align="${bAlign}">
+                  ${renderCleanBadgeSvg(p.badgeCustomTemplate, p, bWidth)}
+              </td>
+          </tr>
+      </table>`;
+    }
     const mainFontSize = Math.max(28, Math.round(bWidth * 0.54));
     const subFontSize = Math.max(14, Math.round(bWidth * 0.27));
     return `
@@ -809,14 +810,14 @@ function renderExactLoyaltyCard(p: any, validity: string): string {
           </td>
       </tr>
       <tr height="1">
-          <td style="padding: 0 8px ${p.badgeCustomTemplate ? '4px' : '12px'} 8px; text-align: center; height: 1px;" valign="bottom">
+          <td style="padding: 0 8px ${p.badgeCustomTemplate || p.customBadgePngUrl ? '4px' : '12px'} 8px; text-align: center; height: 1px;" valign="bottom">
               ${(() => {
-                // 1. Ak má vernostný produkt vlastnú dynamickú šablónu cenovky
-                if (p.badgeCustomTemplate) {
-                  const bWidth = p.badgeWidth || p.badgeCustomTemplate.width || 120;
-                  const bAlign = p.badgeAlign || p.badgeCustomTemplate.align || 'center';
-                  const padTop = p.badgePaddingTop ?? (p.badgeCustomTemplate.paddingTop ?? 0);
-                  const padBottom = p.badgePaddingBottom ?? (p.badgeCustomTemplate.paddingBottom ?? 0);
+                // 1. Ak má vernostný produkt vlastnú PNG cenovku (prednosť) alebo dynamickú šablónu cenovky
+                if (p.customBadgePngUrl || p.badgeCustomTemplate) {
+                  const bWidth = p.badgeWidth || p.badgeCustomTemplate?.width || 120;
+                  const bAlign = p.badgeAlign || p.badgeCustomTemplate?.align || 'center';
+                  const padTop = p.badgePaddingTop ?? (p.badgeCustomTemplate?.paddingTop ?? 0);
+                  const padBottom = p.badgePaddingBottom ?? (p.badgeCustomTemplate?.paddingBottom ?? 0);
 
                   let marginStyle = 'margin: 0 auto;';
                   if (bAlign === 'left') {
@@ -836,7 +837,9 @@ function renderExactLoyaltyCard(p: any, validity: string): string {
                   <table role="presentation" cellspacing="0" cellpadding="0" border="0" align="${bAlign}" style="${marginStyle} width: ${bWidth}px; padding-top: ${padTop}px; padding-bottom: ${padBottom}px;">
                       <tr>
                           <td align="${bAlign}">
-                              ${renderCleanBadgeSvg(p.badgeCustomTemplate, loyaltyProductData, bWidth)}
+                              ${p.customBadgePngUrl
+                                ? `<img src="${escapeHtml(p.customBadgePngUrl)}" width="${bWidth}" alt="${escapeHtml(pickAlt(p.title, 'Cenovka'))}" style="display: block; width: 100%; max-width: ${bWidth}px; margin: 0 auto;">`
+                                : renderCleanBadgeSvg(p.badgeCustomTemplate, loyaltyProductData, bWidth)}
                           </td>
                       </tr>
                   </table>`;
@@ -900,7 +903,7 @@ function renderExactLoyaltyCard(p: any, validity: string): string {
               })()}
           </td>
       </tr>
-      ${p.badgeCustomTemplate ? `
+      ${p.badgeCustomTemplate || p.customBadgePngUrl ? `
       <tr height="1">
           <td align="center" valign="bottom" style="padding: 2px 8px 12px 8px; text-align: center; height: 1px;">
               ${p.cardUnitPrice || p.unitPrice ? `<div style="font-size: 9px; color: #666666; font-weight: 500; font-family: Arial, sans-serif; text-align: center;">${escapeHtml(p.cardUnitPrice || p.unitPrice)}</div>` : '<div style="font-size: 9px; line-height: 9px; height: 9px;">&nbsp;</div>'}