diff --git a/app/api/canvas/local-edit/route.ts b/app/api/canvas/local-edit/route.ts
index c017dbb7c..637809b5d 100644
--- a/app/api/canvas/local-edit/route.ts
+++ b/app/api/canvas/local-edit/route.ts
@@ -1572,7 +1572,11 @@ function buildScaleAdjustCoordinatePrompt(
   scalePercent: ScaleAdjustPercent | null | undefined,
   sourceSize: { width: number; height: number },
   cropReferences: ScaleAdjustCropReference[] = [],
-  options: { falSafe?: boolean; markedPhotoGuide?: boolean } = {}
+  options: {
+    falSafe?: boolean;
+    markedPhotoGuide?: boolean;
+    visualLayoutGuide?: boolean;
+  } = {}
 ) {
   const regionLines = regions
     .map((region) => {
@@ -1657,9 +1661,11 @@ 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.";
+  const coordinateGuideLine = options.visualLayoutGuide
+    ? "输入图片2是一张完整画面的粗略目标布局草稿，不是输出底图。它把 OLD 源框旧主体占位洗淡，表示旧尺寸主体需要移除并自然修复背景；同时把源框中的目标主体粗略缩放/移动到 TARGET 最终占位附近，帮助你理解最终主体大小、位置和室内画面关系。请只读取 input 2 的最终几何意图，不要复制它的淡化痕迹、粗糙拼接、局部透明边、矩形补丁、亮度变化或参考图画质；最终必须以 input 1 的真实照片为唯一画面基底重新完成无缝图片编辑。"
+    : 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.",
@@ -1869,18 +1875,29 @@ export async function POST(request: NextRequest) {
     const useFalScaleAdjustCoordinatePrompt =
       useScaleAdjustCoordinateGuide &&
       resolvedScaleAdjustModelEntry?.provider?.type === "fal-image";
-    const useScaleAdjustMarkedPhotoGuide = useScaleAdjustCoordinateGuide;
+    const useScaleAdjustVisualLayoutGuide =
+      useScaleAdjustCoordinateGuide && !useFalScaleAdjustCoordinatePrompt;
+    const useScaleAdjustMarkedPhotoGuide =
+      useScaleAdjustCoordinateGuide && !useScaleAdjustVisualLayoutGuide;
     const annotatedBuffer = isScaleAdjustOperation
       ? useScaleAdjustCoordinateGuide
-        ? useScaleAdjustMarkedPhotoGuide
-          ? await buildScaleAdjustMarkedPhotoGuideBuffer({
-              height: sourceHeight,
+        ? useScaleAdjustVisualLayoutGuide
+          ? await buildScaleAdjustVisualLayoutGuideBuffer({
               regions,
               scalePercent,
               sourceBuffer,
-              width: sourceWidth,
+              sourceHeight,
+              sourceWidth,
             })
-          : await sharp(
+          : useScaleAdjustMarkedPhotoGuide
+            ? await buildScaleAdjustMarkedPhotoGuideBuffer({
+                height: sourceHeight,
+                regions,
+                scalePercent,
+                sourceBuffer,
+                width: sourceWidth,
+              })
+            : await sharp(
               buildScaleAdjustZoomedCoordinateSvg({
                 height: sourceHeight,
                 regions,
@@ -1932,6 +1949,7 @@ export async function POST(request: NextRequest) {
             {
               falSafe: useFalScaleAdjustCoordinatePrompt,
               markedPhotoGuide: useScaleAdjustMarkedPhotoGuide,
+              visualLayoutGuide: useScaleAdjustVisualLayoutGuide,
             }
           )
         : buildScaleAdjustPrompt(
@@ -1999,7 +2017,9 @@ export async function POST(request: NextRequest) {
         annotatedReferenceSentToModel: isScaleAdjustOperation,
         annotatedReferenceType: isScaleAdjustOperation
           ? useScaleAdjustCoordinateGuide
-            ? useScaleAdjustMarkedPhotoGuide
+            ? useScaleAdjustVisualLayoutGuide
+              ? "scale-adjust-visual-layout-guide"
+              : useScaleAdjustMarkedPhotoGuide
               ? "scale-adjust-marked-photo-guide"
               : "scale-adjust-neutral-coordinate-map"
             : "scale-adjust-full-frame-semantic-edit-map"
@@ -2020,11 +2040,13 @@ export async function POST(request: NextRequest) {
         scaleAdjustNeutralCoordinateMapApplied:
           isScaleAdjustOperation &&
           useScaleAdjustCoordinateGuide &&
-          !useScaleAdjustMarkedPhotoGuide,
+          !useScaleAdjustMarkedPhotoGuide &&
+          !useScaleAdjustVisualLayoutGuide,
         scaleAdjustMarkedPhotoGuideApplied: useScaleAdjustMarkedPhotoGuide,
         scaleAdjustFalMarkedPhotoGuideApplied: useFalScaleAdjustCoordinatePrompt,
         scaleAdjustVisualLayoutGuideApplied:
-          isScaleAdjustOperation && !useScaleAdjustCoordinateGuide,
+          isScaleAdjustOperation &&
+          (!useScaleAdjustCoordinateGuide || useScaleAdjustVisualLayoutGuide),
         falScaleAdjustCoordinateGuideApplied:
           useScaleAdjustCoordinateGuide &&
           resolvedScaleAdjustModelEntry?.provider?.type === "fal-image",
@@ -2054,7 +2076,9 @@ export async function POST(request: NextRequest) {
           ? useScaleAdjustCoordinateGuide
             ? useFalScaleAdjustCoordinatePrompt
               ? "fal-safe-marked-photo-box-guide-no-old-crop-v44-one-shot"
-              : "same-name-marked-photo-box-guide-no-old-crop-v45-one-shot"
+              : useScaleAdjustVisualLayoutGuide
+                ? "same-name-visual-layout-guide-v50-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,
diff --git a/lib/canvas/generate-image.ts b/lib/canvas/generate-image.ts
index 8159e3389..c5a6e8f40 100644
--- a/lib/canvas/generate-image.ts
+++ b/lib/canvas/generate-image.ts
@@ -1643,7 +1643,7 @@ async function buildScaleAdjustDeterministicFallbackImages(params: {
     .toColorspace("srgb")
     .raw()
     .toBuffer();
-  const overlays: Array<{ buffer: Buffer; left: number; top: number }> = [];
+  const overlays: Array<{ input: Buffer; left: number; top: number }> = [];
 
   for (const [index, region] of verification.regions.entries()) {
     const targetRegion =
@@ -1695,7 +1695,7 @@ async function buildScaleAdjustDeterministicFallbackImages(params: {
       width: sourceImage.sourceWidth,
     });
     overlays.push({
-      buffer: objectBuffer,
+      input: objectBuffer,
       left: targetBox.left,
       top: targetBox.top,
     });