From 87d29607138fb7f66f93b8cf92d2f213ee094782 Mon Sep 17 00:00:00 2001
From: 134 <a134@134deMacBook-Pro.local>
Date: Thu, 2 Jul 2026 18:14:51 +0800
Subject: [PATCH] fix: include scale adjust region prompt

---
 app/api/canvas/local-edit/route.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/app/api/canvas/local-edit/route.ts b/app/api/canvas/local-edit/route.ts
index 5d9b4f68a..c017dbb7c 100644
--- a/app/api/canvas/local-edit/route.ts
+++ b/app/api/canvas/local-edit/route.ts
@@ -1591,6 +1591,10 @@ function buildScaleAdjustCoordinatePrompt(
       const sourceBottom = region.pixelRect.top + region.pixelRect.height;
       const targetRight = targetPixelRect.left + targetPixelRect.width;
       const targetBottom = targetPixelRect.top + targetPixelRect.height;
+      const regionUserInstruction = region.prompt.trim();
+      const userInstructionLine = regionUserInstruction
+        ? ` User instruction for this region: ${regionUserInstruction}.`
+        : "";
       const isShrink = widthFactor < 0.92 || heightFactor < 0.92;
       const isEnlarge = widthFactor > 1.08 || heightFactor > 1.08;
       const scaleDirection =
@@ -1626,7 +1630,7 @@ function buildScaleAdjustCoordinatePrompt(
               : "Keep the surrounding room stable.";
         return `Region ${region.index}: current furniture box in source photo left=${region.pixelRect.left}, top=${region.pixelRect.top}, right=${sourceRight}, bottom=${sourceBottom}, width=${region.pixelRect.width}, height=${region.pixelRect.height}; requested final footprint left=${targetPixelRect.left}, top=${targetPixelRect.top}, right=${targetRight}, bottom=${targetBottom}, width=${targetPixelRect.width}, height=${targetPixelRect.height}; scale factor width=${widthFactor.toFixed(2)}, height=${heightFactor.toFixed(2)}. Edit direction: ${actionPhrase}. ${blendPhrase}${cropNote}`;
       }
-      return `Region ${region.index}: OLD search box in input 1 left=${region.pixelRect.left}, top=${region.pixelRect.top}, right=${sourceRight}, bottom=${sourceBottom}, width=${region.pixelRect.width}, height=${region.pixelRect.height}; TARGET final visual footprint left=${targetPixelRect.left}, top=${targetPixelRect.top}, right=${targetRight}, bottom=${targetBottom}, width=${targetPixelRect.width}, height=${targetPixelRect.height}; target scale is ${widthFactor.toFixed(2)}x width and ${heightFactor.toFixed(2)}x height. Main action: ${scaleDirection}. The final furniture silhouette must clearly leave the OLD footprint edges and align much closer to TARGET than OLD; returning an almost unchanged furniture footprint is not acceptable. ${footprintRule}${cropNote}`;
+      return `Region ${region.index}: OLD search box in input 1 left=${region.pixelRect.left}, top=${region.pixelRect.top}, right=${sourceRight}, bottom=${sourceBottom}, width=${region.pixelRect.width}, height=${region.pixelRect.height}; TARGET final visual footprint left=${targetPixelRect.left}, top=${targetPixelRect.top}, right=${targetRight}, bottom=${targetBottom}, width=${targetPixelRect.width}, height=${targetPixelRect.height}; target scale is ${widthFactor.toFixed(2)}x width and ${heightFactor.toFixed(2)}x height. Main action: ${scaleDirection}.${userInstructionLine} The final furniture silhouette must clearly leave the OLD footprint edges and align much closer to TARGET than OLD; returning an almost unchanged furniture footprint is not acceptable. ${footprintRule}${cropNote}`;
     })
     .join("\n");
   const cropLines = cropReferences