From acdc197b7e5e3e8f83774589bccf52512ea9c144 Mon Sep 17 00:00:00 2001
From: 134 <a134@134deMacBook-Pro.local>
Date: Sun, 5 Jul 2026 13:17:03 +0800
Subject: [PATCH] fix: fall back when scale reference upload fails

---
 app/api/canvas/local-edit/route.ts | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/app/api/canvas/local-edit/route.ts b/app/api/canvas/local-edit/route.ts
index 2bb7fff2c..f44d1195a 100644
--- a/app/api/canvas/local-edit/route.ts
+++ b/app/api/canvas/local-edit/route.ts
@@ -4629,8 +4629,11 @@ export async function POST(request: NextRequest) {
           )
         )
       : null;
-    const scaleAdjustPatchReference = useScaleAdjustPatchWorkflow
-      ? await createScaleAdjustPatchReference({
+    let scaleAdjustPatchReference: ScaleAdjustPatchReference | null = null;
+    let scaleAdjustPatchReferenceFailed = false;
+    if (useScaleAdjustPatchWorkflow) {
+      try {
+        scaleAdjustPatchReference = await createScaleAdjustPatchReference({
           regions,
           scalePercent,
           sourceBuffer,
@@ -4643,10 +4646,20 @@ export async function POST(request: NextRequest) {
               isScaleAdjustFurnitureProductLikePrompt(region.prompt)
             ),
           userId: session.user.id,
-        })
-      : null;
+        });
+      } catch (error) {
+        scaleAdjustPatchReferenceFailed = true;
+        console.warn(
+          "[Canvas Local Edit] Scale adjust patch reference failed; falling back to source-only coordinate prompt:",
+          {
+            error: error instanceof Error ? error.message : String(error),
+          }
+        );
+      }
+    }
     const shouldCreateScaleAdjustCropReferences =
       isScaleAdjustOperation &&
+      !scaleAdjustPatchReferenceFailed &&
       (!scaleAdjustPatchReference &&
         (useScaleAdjustVisualLayoutGuide ||
         !useScaleAdjustCoordinatePrompt ||
@@ -4872,6 +4885,7 @@ export async function POST(request: NextRequest) {
         requestedModel: requestedModel || null,
         resolvedAspectRatio,
         scaleAdjustPatchWorkflowApplied: Boolean(scaleAdjustPatchReference),
+        scaleAdjustPatchReferenceFailed,
         scaleAdjustPatchForcedForShrink:
           Boolean(scaleAdjustPatchReference) && hasScaleAdjustShrink,
         scaleAdjustPatchStructureLockedDraftApplied:
@@ -4956,6 +4970,8 @@ export async function POST(request: NextRequest) {
               : scaleAdjustPatchReference.structureLockedDraft
               ? "ai-patch-workspace-structure-locked-draft-v87-subject-alpha-clipped-one-shot"
               : "ai-patch-workspace-draft-v75-soft-wipe-erase-ghost-one-shot"
+            : scaleAdjustPatchReferenceFailed
+              ? "source-only-coordinate-fallback-after-reference-upload-failure-v1-one-shot"
             : useScaleAdjustEditMask
               ? "mask-edit-gpt-image-2-scale-shrink-v74-one-shot"
             : useFalScaleAdjustCoordinatePrompt