Fix build error: remove non-existent version property from ProjectFile mapping

ProjectFile model does not have a version field; FileViewer accepts it as optional.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/app/(admin)/admin/projects/[id]/page.tsx

@@ -517,7 +517,6 @@ function ProjectDetailContent({ projectId }: { projectId: string }) {
                 size: f.size,
                 bucket: f.bucket,
                 objectKey: f.objectKey,
-                version: f.version,
               }))}
             />
           ) : (