feat: uprava produktovej fotky - zoom, posun a orezanie

- posuvniky Velkost / Vodorovne / Zvisle pri produkte aj vernostnom produkte
- upravena fotka sa vykresli ako pozadie bunky (background-size/position,
  funguje aj v Gmaile), co presahuje ramik sa oreze
- pri cenovke vedla obrazka je fotka pozadim celeho riadku a da sa
  zasunut pod cenovku; Outlook (mso) dostane povodny obrazok
- neupravene produkty sa vykresluju presne ako doteraz

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

src/components/editor/ConfigPanel.tsx

@@ -27,6 +27,72 @@ interface ConfigPanelProps {
   availableBadges?: BadgeTemplate[];
 }
 
+// Pomer strán obrázka (výška / šírka); pri chybe načítania 1
+const loadImageAspect = (url: string): Promise<number> =>
+  new Promise((resolve) => {
+    if (!url) return resolve(1);
+    const img = new window.Image();
+    img.onload = () => resolve(img.naturalWidth ? img.naturalHeight / img.naturalWidth : 1);
+    img.onerror = () => resolve(1);
+    img.src = url;
+  });
+
+// Úprava produktovej fotky: zoom a posun (čo presahuje rámik, sa oreže)
+const ProductImageAdjust: React.FC<{
+  product: ProductItem;
+  onChange: (patch: Partial<ProductItem>) => void;
+}> = ({ product, onChange }) => {
+  const scale = product.imageScale ?? 1;
+  const offsetX = product.imageOffsetX || 0;
+  const offsetY = product.imageOffsetY || 0;
+  const isAdjusted = scale !== 1 || offsetX !== 0 || offsetY !== 0;
+
+  const update = async (patch: Partial<ProductItem>) => {
+    // Pomer strán fotky potrebujeme pre presný výpočet pozadia; zistíme ho pri prvej úprave
+    if (!product.imageAspect && product.imageUrl) {
+      patch = { ...patch, imageAspect: await loadImageAspect(product.imageUrl) };
+    }
+    onChange(patch);
+  };
+
+  const slider = (label: string, value: number, display: string, min: number, max: number, step: number, key: keyof ProductItem) => (
+    <div className="grid grid-cols-[64px_1fr_44px] items-center gap-2">
+      <span className="text-[10px] text-gray-600 font-semibold">{label}</span>
+      <input
+        type="range"
+        min={min}
+        max={max}
+        step={step}
+        value={value}
+        onChange={(e) => update({ [key]: Number(e.target.value) } as Partial<ProductItem>)}
+        className="w-full h-1 accent-red-600 cursor-pointer"
+      />
+      <span className="text-[10px] font-mono text-gray-700 text-right">{display}</span>
+    </div>
+  );
+
+  return (
+    <div className="p-2.5 rounded-xl border border-gray-200 bg-gray-50 space-y-1.5">
+      <div className="flex items-center justify-between">
+        <span className="text-[10px] font-bold text-gray-700 uppercase tracking-wider">Úprava fotky</span>
+        {isAdjusted && (
+          <button
+            type="button"
+            onClick={() => onChange({ imageScale: undefined, imageOffsetX: undefined, imageOffsetY: undefined })}
+            className="text-[10px] font-bold text-gray-500 hover:text-red-600"
+          >
+            Obnoviť
+          </button>
+        )}
+      </div>
+      {slider('Veľkosť', scale, `${Math.round(scale * 100)} %`, 0.5, 2.5, 0.05, 'imageScale')}
+      {slider('Vodorovne', offsetX, `${offsetX} px`, -150, 150, 1, 'imageOffsetX')}
+      {slider('Zvisle', offsetY, `${offsetY} px`, -120, 120, 1, 'imageOffsetY')}
+      <p className="text-[10px] text-gray-500">Čo presahuje rámik, sa oreže. Pri polohe cenovky „vedľa obrázka“ sa dá produkt zasunúť pod cenovku.</p>
+    </div>
+  );
+};
+
 // Jednoduchý HTML editor: vlastné HTML nahradí modul vygenerovaný z formulára
 const CustomHtmlEditor: React.FC<{
   module: NewsletterModule;
@@ -640,6 +706,7 @@ export const ConfigPanel: React.FC<ConfigPanelProps> = ({
                   onChange={(url) => {
                     const products = [...module.data.products];
                     products[pIdx].imageUrl = url;
+                    products[pIdx].imageAspect = undefined; // nová fotka = nový pomer strán
                     updateData({ products });
                   }}
                   altValue={p.imageAlt}
@@ -652,6 +719,15 @@ export const ConfigPanel: React.FC<ConfigPanelProps> = ({
                   placeholder="https://...produkt.png alebo nahrajte súbor"
                 />
 
+                <ProductImageAdjust
+                  product={p}
+                  onChange={(patch) => {
+                    const products = [...module.data.products];
+                    products[pIdx] = { ...products[pIdx], ...patch };
+                    updateData({ products });
+                  }}
+                />
+
                 <div>
                   <label className="text-[10px] text-gray-500 font-semibold block mb-0.5">Platnosť akcie pre tento produkt (override)</label>
                   <input
@@ -1270,6 +1346,7 @@ export const ConfigPanel: React.FC<ConfigPanelProps> = ({
                   onChange={(url) => {
                     const products = [...module.data.products];
                     products[pIdx].imageUrl = url;
+                    products[pIdx].imageAspect = undefined; // nová fotka = nový pomer strán
                     updateData({ products });
                   }}
                   altValue={p.imageAlt}
@@ -1282,6 +1359,15 @@ export const ConfigPanel: React.FC<ConfigPanelProps> = ({
                   placeholder="https://...produkt.png alebo nahrajte súbor"
                 />
 
+                <ProductImageAdjust
+                  product={p}
+                  onChange={(patch) => {
+                    const products = [...module.data.products];
+                    products[pIdx] = { ...products[pIdx], ...patch };
+                    updateData({ products });
+                  }}
+                />
+
                 <div>
                   <label className="text-[10px] text-gray-500 font-semibold block mb-0.5">Platnosť akcie pre tento produkt (override)</label>
                   <input

src/lib/emailRenderer.ts

@@ -337,7 +337,7 @@ function renderModule(m: any, campaign: NewsletterCampaign): string {
           <table role="presentation" cellspacing="0" cellpadding="0" border="0" width="100%" style="margin-bottom: 12px;">
               <tr>
                   <td width="100%" valign="top">
-                      ${renderExactProductCard(p, globalValidity, cardBg, cardBorder, badgeHdrBg, badgeHdrColor, badgePrcBg, badgePrcColor, badgeCustomTxt, m.data.sectionTitle)}
+                      ${renderExactProductCard(p, globalValidity, cardBg, cardBorder, badgeHdrBg, badgeHdrColor, badgePrcBg, badgePrcColor, badgeCustomTxt, m.data.sectionTitle, 600)}
                   </td>
               </tr>
           </table>`;
@@ -630,6 +630,56 @@ function renderModule(m: any, campaign: NewsletterCampaign): string {
   }
 }
 
+// ---------------------------------------------------------------------------
+// Úprava produktovej fotky (zoom / posun / orezanie)
+// Upravená fotka sa vykreslí ako pozadie bunky (background-size / background-position
+// fungujú aj v Gmaile, ktorý transform/position odstraňuje); čo presahuje rámik, sa oreže.
+// Outlook pre Windows (mso) pozadia nevie, dostane pôvodný <img>.
+// ---------------------------------------------------------------------------
+function hasImageAdjust(p: any): boolean {
+  return (p.imageScale ?? 1) !== 1 || (p.imageOffsetX || 0) !== 0 || (p.imageOffsetY || 0) !== 0;
+}
+
+// Obsah vkladaný do podmieneného komentára pre Outlook nesmie obsahovať vlastné komentáre (napr. zo SVG cenovky)
+function stripHtmlComments(html: string): string {
+  return html.replace(/<!--[\s\S]*?-->/g, '');
+}
+
+// Štýl pozadia: fotka so základnou šírkou baseW, vycentrovaná na (centerX, centerY) rámika, plus zoom a posun
+function adjustedImageBgStyle(p: any, baseW: number, centerX: number, centerY: number): string {
+  const scale = p.imageScale ?? 1;
+  const aspect = p.imageAspect || 1;
+  const w = Math.round(baseW * scale);
+  const h = Math.round(w * aspect);
+  const x = Math.round(centerX - w / 2 + (p.imageOffsetX || 0));
+  const y = Math.round(centerY - h / 2 + (p.imageOffsetY || 0));
+  return `background-image: url('${escapeHtml(p.imageUrl)}'); background-repeat: no-repeat; background-size: ${w}px ${h}px; background-position: ${x}px ${y}px;`;
+}
+
+// Riadok s fotkou pod sebou (rozloženie "pod obrázkom" a vernostné karty)
+function renderStackedImageRow(p: any, imgHtml: string, cellStyle: string, cardWidth: number, maxImgW: number, alt: string): string {
+  if (!hasImageAdjust(p)) {
+    return `
+      <tr height="160">
+          <td height="160" style="${cellStyle}" valign="middle">
+              ${imgHtml}
+          </td>
+      </tr>`;
+  }
+  const baseW = Math.min(maxImgW, cardWidth - 16);
+  const baseH = Math.round(baseW * (p.imageAspect || 1));
+  const frameH = Math.max(160, baseH + 15);
+  return `
+      <!--[if mso]>
+      <tr><td height="160" style="${cellStyle}" valign="middle">${imgHtml}</td></tr>
+      <![endif]-->
+      <!--[if !mso]><!-->
+      <tr height="${frameH}">
+          <td height="${frameH}" role="img" aria-label="${escapeHtml(alt)}" style="height: ${frameH}px; line-height: ${frameH}px; font-size: 0; ${adjustedImageBgStyle(p, baseW, cardWidth / 2, baseH / 2)}">&nbsp;</td>
+      </tr>
+      <!--<![endif]-->`;
+}
+
 function renderExactProductCard(
   p: ProductItem,
   globalValidity: string,
@@ -640,7 +690,8 @@ function renderExactProductCard(
   badgePrcBg: string,
   badgePrcColor: string,
   badgeCustomTxt: string | null,
-  sectionTitle?: string
+  sectionTitle?: string,
+  cardWidth: number = 294 // nominálna šírka karty v px (2 stĺpce = 294, 1 stĺpec = 600)
 ): string {
   const validity = p.validityOverride || globalValidity;
   const effectiveCardBg = p.cardBgColor || cardBg || '#feeaea';
@@ -726,15 +777,36 @@ function renderExactProductCard(
               </table>
           </td>
       </tr>
-      <tr>
+      ${(() => {
-          <td width="58%" height="160" style="padding: 8px 4px 8px 8px; text-align: center; height: 160px;" valign="middle">
+        const alt = pickAlt(p.imageAlt, p.title, sectionTitle, 'Produkt');
-              <img src="${escapeHtml(p.imageUrl)}" width="180" alt="${escapeHtml(pickAlt(p.imageAlt, p.title, sectionTitle, 'Produkt'))}" style="display: block; width: 100%; max-width: 180px; margin: 0 auto; border-radius: 8px;">
+        const imgCell = `<td width="58%" height="160" style="padding: 8px 4px 8px 8px; text-align: center; height: 160px;" valign="middle">
-          </td>
+              <img src="${escapeHtml(p.imageUrl)}" width="180" alt="${escapeHtml(alt)}" style="display: block; width: 100%; max-width: 180px; margin: 0 auto; border-radius: 8px;">
-          <td width="42%" style="padding: 8px 8px 8px 4px; text-align: center;" valign="middle">
+          </td>`;
+        const badgeCell = `<td width="42%" style="padding: 8px 8px 8px 4px; text-align: center;" valign="middle">
               ${renderBadgeContent(bWidth, bAlign, padTop, padBottom, marginStyle)}
               ${p.unitPrice ? `<div style="font-size: 8px; color: #666666; font-weight: 500; font-family: Arial, sans-serif; text-align: center; margin-top: 4px;">${escapeHtml(p.unitPrice)}</div>` : ''}
+          </td>`;
+        if (!hasImageAdjust(p)) {
+          return `<tr>${imgCell}${badgeCell}</tr>`;
+        }
+        // Upravená fotka: pozadie celého riadku, cenovka je nad ňou (produkt sa dá zasunúť pod cenovku)
+        const baseW = Math.min(180, Math.round(cardWidth * 0.58) - 12);
+        const frameH = Math.max(160, Math.round(baseW * (p.imageAspect || 1)) + 16);
+        return `
+      <!--[if mso]><tr>${imgCell}${stripHtmlComments(badgeCell)}</tr><![endif]-->
+      <!--[if !mso]><!-->
+      <tr>
+          <td colspan="2" height="${frameH}" role="img" aria-label="${escapeHtml(alt)}" style="height: ${frameH}px; ${adjustedImageBgStyle(p, baseW, Math.round(cardWidth * 0.29), frameH / 2)}">
+              <table role="presentation" cellspacing="0" cellpadding="0" border="0" width="100%" height="${frameH}">
+                  <tr>
+                      <td width="58%" height="${frameH}" style="font-size: 0; line-height: 0;">&nbsp;</td>
+                      ${badgeCell}
+                  </tr>
+              </table>
           </td>
       </tr>
+      <!--<![endif]-->`;
+      })()}
       <tr>
           <td colspan="2" height="54" style="padding: 0 8px 10px 8px; text-align: center; height: 54px; min-height: 54px;" valign="top">
               <h3 class="force-text-dark" style="margin: 0; font-size: 15px; color: #1a1a1a; font-weight: 600; line-height: 1.25;">${escapeHtml(p.title)}</h3>
@@ -756,11 +828,14 @@ function renderExactProductCard(
               </table>
           </td>
       </tr>
-      <tr height="160">
+      ${renderStackedImageRow(
-          <td height="160" style="padding: 0 8px 15px 8px; text-align: center; height: 160px;" valign="middle">
+        p,
-              <img src="${escapeHtml(p.imageUrl)}" width="220" alt="${escapeHtml(pickAlt(p.imageAlt, p.title, sectionTitle, 'Produkt'))}" style="display: block; width: 100%; max-width: 220px; margin: 0 auto; border-radius: 8px;">
+        `<img src="${escapeHtml(p.imageUrl)}" width="220" alt="${escapeHtml(pickAlt(p.imageAlt, p.title, sectionTitle, 'Produkt'))}" style="display: block; width: 100%; max-width: 220px; margin: 0 auto; border-radius: 8px;">`,
-          </td>
+        'padding: 0 8px 15px 8px; text-align: center; height: 160px;',
-      </tr>
+        cardWidth,
+        220,
+        pickAlt(p.imageAlt, p.title, sectionTitle, 'Produkt')
+      )}
       <tr>
           <td height="54" style="padding: 0 8px 10px 8px; text-align: center; height: 54px; min-height: 54px;" valign="top">
               <h3 class="force-text-dark" style="margin: 0; font-size: 15px; color: #1a1a1a; font-weight: 600; line-height: 1.25;">${escapeHtml(p.title)}</h3>
@@ -813,11 +888,21 @@ function renderExactLoyaltyCard(p: any, validity: string): string {
               </table>
           </td>
       </tr>
+      ${hasImageAdjust(p)
+        ? renderStackedImageRow(
+            p,
+            `<img src="${escapeHtml(p.imageUrl)}" width="220" alt="${escapeHtml(pickAlt(p.imageAlt, p.title, 'Produkt'))}" style="display: block; width: 100%; max-width: 220px; margin: 0 auto; border-radius: 8px;">`,
+            'padding: 0 8px 15px 8px; text-align: center; height: 160px;',
+            294,
+            220,
+            pickAlt(p.imageAlt, p.title, 'Produkt')
+          )
+        : `
       <tr height="1">
           <td style="padding: 0 8px 15px 8px; text-align: center; height: 160px;" valign="middle">
               <img src="${escapeHtml(p.imageUrl)}" width="220" alt="${escapeHtml(pickAlt(p.imageAlt, p.title, 'Produkt'))}" style="display: block; width: 100%; max-width: 220px; margin: 0 auto; border-radius: 8px;">
           </td>
-      </tr>
+      </tr>`}
       <tr>
           <td style="padding: 0 8px 10px 8px; text-align: center; height: 100%; min-height: 44px;" valign="top">
               <h3 class="force-text-dark" style="margin: 0; font-size: 15px; color: #1a1a1a; font-weight: 600; line-height: 1.25;">${escapeHtml(p.title)}</h3>

src/types/newsletter.ts

@@ -44,6 +44,10 @@ export interface ProductItem {
   showSlovakFlag?: boolean;
   customBadgePngUrl?: string; // Voliteľná statická PNG cenovka
   imageAlt?: string; // Ručný alt text fotky (inak názov produktu)
+  imageScale?: number;   // Zoom fotky (1 = 100 %)
+  imageOffsetX?: number; // Posun fotky vodorovne v px (+ doprava)
+  imageOffsetY?: number; // Posun fotky zvisle v px (+ nadol)
+  imageAspect?: number;  // Pomer strán fotky výška/šírka (pre výpočet pozadia)
   badgeLayout?: 'below' | 'side'; // Poloha cenovky: 'below' = pod obrázkom (default), 'side' = vedľa obrázka
 }