fix: KöPi - alle Bilder im Browser-Kontext laden, dunkler Hintergrund

backend/src/tools/koepi/routes.js

@@ -89,33 +89,35 @@ async function scrapeMarktguru() {
       });
     });
 
-    // Bilder über Node https laden mit Cookies aus dem Browser
-    const cookies = await page.cookies('https://cdn.marktguru.de');
-    const cookieStr = cookies.map(c => `${c.name}=${c.value}`).join('; ');
+    // Bilder alle auf einmal im Browser-Kontext laden (hat Zugriff auf CDN)
+    const imageUrls = offers.map(o => o.image).filter(Boolean);
+    if (imageUrls.length > 0) {
+      const b64Images = await page.evaluate(async (urls) => {
+        const results = {};
+        await Promise.all(urls.map(async url => {
+          try {
+            const resp = await fetch(url);
+            if (!resp.ok) { results[url] = null; return; }
+            const blob = await resp.blob();
+            results[url] = await new Promise(res => {
+              const r = new FileReader();
+              r.onloadend = () => res(r.result);
+              r.onerror = () => res(null);
+              r.readAsDataURL(blob);
+            });
+          } catch { results[url] = null; }
+        }));
+        return results;
+      }, imageUrls);
 
-    // Sequenziell laden damit Cookie-Session stabil bleibt
-    for (const offer of offers) { await new Promise(resolve => {
-      if (!offer.image || !offer.image.startsWith('https://')) return resolve();
-      const req = require('https').get(offer.image, {
-        headers: {
-          'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36',
-          'Referer': 'https://www.marktguru.de/',
-          'Cookie': cookieStr,
+      for (const offer of offers) {
+        if (offer.image && b64Images[offer.image]) {
+          offer.image = b64Images[offer.image];
+        } else {
+          offer.image = null;
         }
-      }, res => {
-        if (res.statusCode !== 200) { offer.image = null; return resolve(); }
-        const chunks = [];
-        res.on('data', c => chunks.push(c));
-        res.on('end', () => {
-          const b64 = Buffer.concat(chunks).toString('base64');
-          const mime = res.headers['content-type'] || 'image/webp';
-          offer.image = `data:${mime};base64,${b64}`;
-          resolve();
-        });
-      });
-      req.on('error', () => { offer.image = null; resolve(); });
-      req.setTimeout(8000, () => { req.destroy(); offer.image = null; resolve(); });
-    }); }
+      }
+    }
 
     // Filtern auf Ziel-Händler + nur König Pilsener
     const filtered = offers.filter(o => {

frontend/src/tools/koepi.jsx

@@ -36,9 +36,9 @@ function OfferCard({ offer }) {
     }}>
       {/* Bild oben, volle Breite */}
       {offer.image && (
-        <div style={{ margin:'-12px -14px 8px -14px', height:160, background:'#f0f0f0', borderRadius:'8px 8px 0 0', overflow:'hidden', display:'flex', alignItems:'center', justifyContent:'center' }}>
+        <div style={{ margin:'-12px -14px 8px -14px', height:180, background:'#111', borderRadius:'8px 8px 0 0', overflow:'hidden', display:'flex', alignItems:'center', justifyContent:'center' }}>
           <img src={offer.image} alt="König Pilsener"
-            style={{ width:'100%', height:'100%', objectFit:'contain' }}
+            style={{ maxWidth:'100%', maxHeight:'100%', objectFit:'contain' }}
             onError={e => { e.target.parentElement.style.display='none'; }}
           />
         </div>