feat: add Hersteller page with manufacturer data fetching and SEO support

prerender/data-fetching.cjs

@@ -140,6 +140,38 @@ const fetchCategoryImage = (socket, categoryId) => {
   });
 };
 
+const fetchManufacturers = (socket) => {
+  return new Promise((resolve, reject) => {
+    const timeout = setTimeout(() => {
+      reject(new Error("Timeout fetching manufacturers"));
+    }, 10000);
+
+    socket.emit("getHerstellerImages", {}, (response) => {
+      clearTimeout(timeout);
+      if (response?.success && Array.isArray(response.manufacturers)) {
+        // Filter and format manufacturers similar to HerstellerPage.js
+        const manufacturers = response.manufacturers
+          .filter(m => m.imageBuffer)
+          .map(m => ({
+            id: m.id,
+            name: m.name || '',
+            slug: m.slug || '',
+            imageBuffer: m.imageBuffer,
+          }))
+          .sort((a, b) => (a.name || '').localeCompare(b.name || '', undefined, { sensitivity: 'base' }));
+
+        resolve(manufacturers);
+      } else {
+        reject(
+          new Error(
+            `Invalid manufacturers response: ${JSON.stringify(response)}`
+          )
+        );
+      }
+    });
+  });
+};
+
 const saveProductImages = async (socket, products, categoryName, outputDir) => {
   if (!products || products.length === 0) return;
 
@@ -383,6 +415,7 @@ module.exports = {
   fetchProductDetails,
   fetchProductImage,
   fetchCategoryImage,
+  fetchManufacturers,
   saveProductImages,
   saveCategoryImages,
 };