diff --git a/app/api/canvas/local-edit/route.ts b/app/api/canvas/local-edit/route.ts
index 9a0704f8a..5d9b4f68a 100644
--- a/app/api/canvas/local-edit/route.ts
+++ b/app/api/canvas/local-edit/route.ts
@@ -1371,7 +1371,7 @@ function buildScaleAdjustZoomedCoordinateSvg(params: {
   `);
 }
 
-function buildScaleAdjustFalPhotoGuideSvg(params: {
+function buildScaleAdjustMarkedPhotoGuideSvg(params: {
   width: number;
   height: number;
   regions: NormalizedLocalEditRegion[];
@@ -1407,7 +1407,7 @@ function buildScaleAdjustFalPhotoGuideSvg(params: {
   `);
 }
 
-async function buildScaleAdjustFalPhotoGuideBuffer(params: {
+async function buildScaleAdjustMarkedPhotoGuideBuffer(params: {
   sourceBuffer: Buffer;
   width: number;
   height: number;
@@ -1421,7 +1421,7 @@ async function buildScaleAdjustFalPhotoGuideBuffer(params: {
     .modulate({ brightness: 1.04, saturation: 0.45 })
     .composite([
       {
-        input: buildScaleAdjustFalPhotoGuideSvg({
+        input: buildScaleAdjustMarkedPhotoGuideSvg({
           height,
           regions,
           scalePercent,
@@ -1572,7 +1572,7 @@ function buildScaleAdjustCoordinatePrompt(
   scalePercent: ScaleAdjustPercent | null | undefined,
   sourceSize: { width: number; height: number },
   cropReferences: ScaleAdjustCropReference[] = [],
-  options: { falSafe?: boolean } = {}
+  options: { falSafe?: boolean; markedPhotoGuide?: boolean } = {}
 ) {
   const regionLines = regions
     .map((region) => {
@@ -1653,13 +1653,17 @@ function buildScaleAdjustCoordinatePrompt(
     ].join("\n");
   }
 
+  const coordinateGuideLine = options.markedPhotoGuide
+    ? "输入图片2是一张原图浅化后的完整画面位置参考图，不是输出底图。青色虚线框表示当前主体搜索框（对应下方 OLD），蓝色实线框表示目标最终占位（对应下方 TARGET）。请用输入图片2理解主体在真实室内画面中的位置关系，但最终图不能出现任何框线、色块、标注或参考图的浅化效果。"
+    : "Input image 2 is a zoomed neutral coordinate instruction map, not a photo and not output content. It enlarges the OLD and TARGET boxes so their relative scale is easy to read; use the numeric pixel coordinates below for the exact absolute position in input image 1. The OLD box/label locates the current furniture; the TARGET box/label gives the required final footprint, center, and scale factor. If the map says OLD OUTSIDE -> BG, rebuild the old full-size furniture area outside TARGET as natural background in the final photo. Read the boxes, labels, arrows, and scale text only as instructions; never output any map graphics.";
+
   return [
     "Local furniture scale edit. Use input image 1 as the clean original photo and the locked camera frame.",
     "One-shot cost constraint: produce the requested edit in this generation without relying on later retries or alternate candidates; an unchanged result is not acceptable.",
     "中文硬约束：只调整 OLD 框中的主要家具主体。TARGET 框是最终占位；如果是缩小，OLD 框里超出 TARGET 的旧家具占位必须改为自然背景；如果是放大，同一件家具必须明显变大。禁止整图缩放、整图裁切、整图重绘。",
     "一次成功硬约束：不要保守返回原尺寸。目标家具的可见轮廓必须明显从 OLD 原始占位变到 TARGET 占位；不接受看起来和原图几乎相同的结果。",
     `Return one seamless realistic photo with the same frame and pixel size as input image 1: ${sourceSize.width} x ${sourceSize.height} px.`,
-    "Input image 2 is a zoomed neutral coordinate instruction map, not a photo and not output content. It enlarges the OLD and TARGET boxes so their relative scale is easy to read; use the numeric pixel coordinates below for the exact absolute position in input image 1. The OLD box/label locates the current furniture; the TARGET box/label gives the required final footprint, center, and scale factor. If the map says OLD OUTSIDE -> BG, rebuild the old full-size furniture area outside TARGET as natural background in the final photo. Read the boxes, labels, arrows, and scale text only as instructions; never output any map graphics.",
+    coordinateGuideLine,
     cropLines ? `${cropLines}` : "",
     "",
     "Task:",
@@ -1861,10 +1865,11 @@ export async function POST(request: NextRequest) {
     const useFalScaleAdjustCoordinatePrompt =
       useScaleAdjustCoordinateGuide &&
       resolvedScaleAdjustModelEntry?.provider?.type === "fal-image";
+    const useScaleAdjustMarkedPhotoGuide = useScaleAdjustCoordinateGuide;
     const annotatedBuffer = isScaleAdjustOperation
       ? useScaleAdjustCoordinateGuide
-        ? useFalScaleAdjustCoordinatePrompt
-          ? await buildScaleAdjustFalPhotoGuideBuffer({
+        ? useScaleAdjustMarkedPhotoGuide
+          ? await buildScaleAdjustMarkedPhotoGuideBuffer({
               height: sourceHeight,
               regions,
               scalePercent,
@@ -1920,7 +1925,10 @@ export async function POST(request: NextRequest) {
               height: sourceHeight,
             },
             scaleAdjustCropReferences,
-            { falSafe: useFalScaleAdjustCoordinatePrompt }
+            {
+              falSafe: useFalScaleAdjustCoordinatePrompt,
+              markedPhotoGuide: useScaleAdjustMarkedPhotoGuide,
+            }
           )
         : buildScaleAdjustPrompt(
             regions,
@@ -1987,8 +1995,8 @@ export async function POST(request: NextRequest) {
         annotatedReferenceSentToModel: isScaleAdjustOperation,
         annotatedReferenceType: isScaleAdjustOperation
           ? useScaleAdjustCoordinateGuide
-            ? useFalScaleAdjustCoordinatePrompt
-              ? "scale-adjust-fal-marked-photo-guide"
+            ? useScaleAdjustMarkedPhotoGuide
+              ? "scale-adjust-marked-photo-guide"
               : "scale-adjust-neutral-coordinate-map"
             : "scale-adjust-full-frame-semantic-edit-map"
           : "source-overlay",
@@ -2008,7 +2016,8 @@ export async function POST(request: NextRequest) {
         scaleAdjustNeutralCoordinateMapApplied:
           isScaleAdjustOperation &&
           useScaleAdjustCoordinateGuide &&
-          !useFalScaleAdjustCoordinatePrompt,
+          !useScaleAdjustMarkedPhotoGuide,
+        scaleAdjustMarkedPhotoGuideApplied: useScaleAdjustMarkedPhotoGuide,
         scaleAdjustFalMarkedPhotoGuideApplied: useFalScaleAdjustCoordinatePrompt,
         scaleAdjustVisualLayoutGuideApplied:
           isScaleAdjustOperation && !useScaleAdjustCoordinateGuide,
@@ -2041,7 +2050,7 @@ export async function POST(request: NextRequest) {
           ? useScaleAdjustCoordinateGuide
             ? useFalScaleAdjustCoordinatePrompt
               ? "fal-safe-marked-photo-box-guide-no-old-crop-v44-one-shot"
-              : "same-name-zoomed-coordinate-map-no-old-crop-v42-one-shot"
+              : "same-name-marked-photo-box-guide-no-old-crop-v45-one-shot"
             : "locked-plate-semantic-target-map-no-old-crop-v15"
           : undefined,
         scaleAdjustPostCompositeApplied: false,