From c6fa512e1581913ca1c4b3c2ed2364d3210176a9 Mon Sep 17 00:00:00 2001
From: creatixchu <creatixchu@deepseek.com>
Date: Thu, 20 Aug 2026 11:22:00 +0800
Subject: [PATCH] fix(attachment-local): keep reference field order stable for
 logged fixtures

The canonical ref serializes mediaType, width, height, bytes in the order the
pre-canonicalization store used, so existing session-log fixtures and logged
histories keep byte-identical reference JSON.
---
 packages/attachment/attachment-local/src/store.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/attachment/attachment-local/src/store.ts b/packages/attachment/attachment-local/src/store.ts
index 9da83e30a0..27152d89cc 100644
--- a/packages/attachment/attachment-local/src/store.ts
+++ b/packages/attachment/attachment-local/src/store.ts
@@ -203,9 +203,9 @@ export async function saveImageFile(
     ref: {
       attachmentId: AttachmentId(`sha256:${sha256}`),
       mediaType: canonical.mediaType,
-      bytes: canonical.data.byteLength,
       width: canonical.width,
       height: canonical.height,
+      bytes: canonical.data.byteLength,
       ...(name !== undefined ? { name } : {}),
     },
     source: metadata,