feat(brochure): implement multi-product PDF brochure generation system

lib/pdf-brochure.tsx

@@ -0,0 +1,95 @@
+import * as React from 'react';
+import { Document, Page, View, Text, StyleSheet, Font, Image } from '@react-pdf/renderer';
+import { ProductData, ProductDatasheetPage } from './pdf-datasheet';
+
+const styles = StyleSheet.create({
+  cover: {
+    backgroundColor: '#001a4d', // Navy
+    height: '100%',
+    display: 'flex',
+    flexDirection: 'column',
+    justifyContent: 'center',
+    alignItems: 'center',
+    color: '#FFFFFF',
+    padding: 40,
+  },
+  logoContainer: {
+    marginBottom: 40,
+  },
+  logoText: {
+    fontSize: 64,
+    fontWeight: 700,
+    letterSpacing: 4,
+  },
+  title: {
+    fontSize: 32,
+    fontWeight: 700,
+    textTransform: 'uppercase',
+    letterSpacing: 2,
+    marginBottom: 20,
+    textAlign: 'center',
+  },
+  subtitle: {
+    fontSize: 16,
+    color: '#82ed20', // Accent Green
+    textTransform: 'uppercase',
+    letterSpacing: 4,
+    marginBottom: 60,
+  },
+  footer: {
+    position: 'absolute',
+    bottom: 60,
+    fontSize: 10,
+    textTransform: 'uppercase',
+    letterSpacing: 2,
+    color: '#e5e7eb',
+  },
+  accentBar: {
+    width: 60,
+    height: 4,
+    backgroundColor: '#82ed20',
+    marginBottom: 40,
+  },
+});
+
+interface PDFBrochureProps {
+  products: ProductData[];
+  locale: 'en' | 'de';
+  title?: string;
+  subtitle?: string;
+}
+
+export const PDFBrochure: React.FC<PDFBrochureProps> = ({
+  products,
+  locale,
+  title = locale === 'de' ? 'Produktkatalog' : 'Product Catalog',
+  subtitle = '2026',
+}) => {
+  const dateStr = new Date().toLocaleDateString(locale === 'en' ? 'en-US' : 'de-DE', {
+    year: 'numeric',
+    month: 'long',
+  });
+
+  return (
+    <Document>
+      {/* Cover Page */}
+      <Page size="A4" style={styles.cover}>
+        <View style={styles.logoContainer}>
+          <Text style={styles.logoText}>KLZ</Text>
+        </View>
+        <View style={styles.accentBar} />
+        <Text style={styles.title}>{title}</Text>
+        <Text style={styles.subtitle}>{subtitle}</Text>
+        
+        <View style={styles.footer}>
+          <Text>{dateStr} — KLZ CABLES</Text>
+        </View>
+      </Page>
+
+      {/* Product Pages */}
+      {products.map((product) => (
+        <ProductDatasheetPage key={product.id} product={product} locale={locale} />
+      ))}
+    </Document>
+  );
+};