fix: enable product lock without person guard

app/api/canvas/local-edit/route.ts

@@ -2523,6 +2523,7 @@ async function resizeScaleAdjustAlphaMask(params: {
 
 async function buildScaleAdjustRmbgStructureLockedComposite(params: {
   placement: ReturnType<typeof getScaleAdjustVisualGuidePlacement>;
+  preferPixelStructure?: boolean;
   protectedPersonSide?: ScaleAdjustProtectedPersonSide | null;
   raw: Buffer;
   sourceBuffer: Buffer;
@@ -2532,6 +2533,7 @@ async function buildScaleAdjustRmbgStructureLockedComposite(params: {
 }): Promise<ScaleAdjustStructureLockedComposite | null> {
   const {
     placement,
+    preferPixelStructure = false,
     protectedPersonSide = null,
     raw,
     sourceBuffer,
@@ -2550,7 +2552,7 @@ async function buildScaleAdjustRmbgStructureLockedComposite(params: {
       userId,
       imageBase64: sourceCropBuffer.toString("base64"),
       imageBuffer: sourceCropBuffer,
-      prompt: protectedPersonSide
+      prompt: preferPixelStructure || protectedPersonSide
         ? "比例调整家具/商品抠图：只保留框选区域内需要缩放的目标家具/商品主体和它本身的配件结构，明确排除非目标人物、手、脚、腿、衣服、书本、身体遮挡物和背景，输出透明背景 PNG"
         : "比例调整主体抠图：只保留框选的目标人物/家具/商品主体，输出透明背景 PNG",
       skipGallerySave: true,
@@ -3114,7 +3116,7 @@ async function buildScaleAdjustStructureLockedComposite(params: {
   } = params;
   const allowRmbgStructureLock =
     process.env.CANVAS_SCALE_ADJUST_ENABLE_RMBG_PRODUCT_LOCK !== "0" &&
-    ((preferPixelStructure && Boolean(protectedPersonSide)) ||
+    (preferPixelStructure ||
       process.env.CANVAS_SCALE_ADJUST_ENABLE_RMBG_STRUCTURE === "1" ||
       (includePersonPixels &&
         process.env.CANVAS_SCALE_ADJUST_DISABLE_PERSON_RMBG !== "1"));
@@ -3122,6 +3124,7 @@ async function buildScaleAdjustStructureLockedComposite(params: {
     ? null
     : await buildScaleAdjustRmbgStructureLockedComposite({
         placement,
+        preferPixelStructure,
         protectedPersonSide,
         raw,
         sourceBuffer,