[bug] More robust retrieveData

src/storage.service.ts

@@ -50,11 +50,24 @@ export async function retrieveData(servers: string[], key: string): Promise<Arra
       });
       
       if (response.status === 200) {
-        // Validate that we received an ArrayBuffer
+        // Handle both ArrayBuffer and Buffer (Node.js)
         if (response.data instanceof ArrayBuffer) {
           return response.data;
+        } else if (Buffer.isBuffer(response.data)) {
+          // Convert Buffer to ArrayBuffer
+          return response.data.buffer.slice(
+            response.data.byteOffset,
+            response.data.byteOffset + response.data.byteLength
+          );
+        } else if (response.data && typeof response.data === 'object' && 'buffer' in response.data) {
+          // Handle Uint8Array or similar typed arrays
+          const buffer = response.data.buffer;
+          return buffer.slice(
+            response.data.byteOffset,
+            response.data.byteOffset + response.data.byteLength
+          );
         } else {
-          console.error('Server returned non-ArrayBuffer data:', typeof response.data);
+          console.error('Server returned unsupported data type:', typeof response.data, response.data?.constructor?.name);
           continue;
         }
       } else {