fix: support external avatar URLs in generateAvatarUrl

packages/shared/src/utils/s3.ts

@@ -71,6 +71,8 @@ export async function deleteObject(bucket: string, key: string) {
 
 /**
  * Generate presigned URL for an avatar image
+ * Returns the URL as-is if it's already a full URL (external provider)
+ * Returns presigned URL if it's an S3 key
  * Returns null if image key is missing, bucket is not configured, or URL generation fails
  */
 export async function generateAvatarUrl(
@@ -81,6 +83,10 @@ export async function generateAvatarUrl(
     return null;
   }
 
+  if (imageKey.startsWith("http://") || imageKey.startsWith("https://")) {
+    return imageKey;
+  }
+
   const bucket = env("NEXT_PUBLIC_AVATAR_BUCKET_NAME");
   if (!bucket) {
     return null;