diff --git a/src/lib/server/ai/image-preprocess.ts b/src/lib/server/ai/image-preprocess.ts
index f69a91f..62474f0 100644
--- a/src/lib/server/ai/image-preprocess.ts
+++ b/src/lib/server/ai/image-preprocess.ts
@@ -1,4 +1,5 @@
 import type SharpType from 'sharp';
+import { createRequire } from 'node:module';
 
 const MAX_EDGE = 1600;
 const JPEG_QUALITY = 85;
@@ -8,20 +9,25 @@ export type PreprocessedImage = {
   mimeType: 'image/jpeg';
 };
 
-// Dynamic import: adapter-node bundelt server-code via Rollup/@rollup/plugin-commonjs,
-// und das packt sharp's dynamic-require fuer die native Plattform-.node-Binary
-// kaputt ins Bundle. Mit import() via Vite's Hint-Kommentar kann Rollup sharp
-// nicht auflösen und laesst es zur Laufzeit regulaer aus node_modules laden.
-async function loadSharp(): Promise<typeof SharpType> {
-  const mod = await import(/* @vite-ignore */ 'sharp');
-  return (mod as unknown as { default: typeof SharpType }).default ?? (mod as unknown as typeof SharpType);
+// sharp per Node-Runtime-require laden, nicht via ES-Import: adapter-node
+// bundelt ES-Imports (auch dynamische, auch mit @vite-ignore) ins Server-
+// Bundle, was sharp's internes dynamic-require fuer die Plattform-.node-Binary
+// zerstoert. createRequire + require() ist pure Node-Runtime-Logik, die
+// Rollup nicht anfasst -- sharp wird regulaer aus node_modules geladen.
+const nodeRequire = createRequire(import.meta.url);
+let sharpModule: typeof SharpType | null = null;
+function loadSharp(): typeof SharpType {
+  if (!sharpModule) {
+    sharpModule = nodeRequire('sharp') as typeof SharpType;
+  }
+  return sharpModule;
 }
 
 // Resize auf max 1600px lange Kante, JPEG re-encode, Metadata strippen.
 // sharp liest HEIC/HEIF transparent, wenn libheif im libvips-Build enthalten ist
 // (in Alpine's vips-dev + in den offiziellen sharp-Prebuilds).
 export async function preprocessImage(input: Buffer): Promise<PreprocessedImage> {
-  const sharp = await loadSharp();
+  const sharp = loadSharp();
   const pipeline = sharp(input, { failOn: 'error' }).rotate(); // respect EXIF orientation
   const meta = await pipeline.metadata();
   if (!meta.width || !meta.height) {