fix: preserve psd clip mask layer stacking

components/agents/AgentPsdTemplateEditorDialog.tsx

@@ -2290,6 +2290,13 @@ export function AgentPsdTemplateEditorDialog({
       ),
     [orderedVisiblePreviewLayers]
   );
+  const renderPreviewSegments = useMemo(
+    () =>
+      (selectedTemplate?.renderSegments || []).filter((segment) =>
+        Boolean(String(segment.url || "").trim())
+      ),
+    [selectedTemplate?.renderSegments]
+  );
 
   const effectiveImageAssignments = useMemo(() => {
     const nextAssignments: Record<string, string> = {};
@@ -2315,6 +2322,35 @@ export function AgentPsdTemplateEditorDialog({
 
     return nextAssignments;
   }, [editableImageLayers, imageAssignments, selectedTemplate, sourceImageUrl]);
+  const hasVisibleAssignedPreviewImageLayer = useMemo(
+    () =>
+      orderedVisiblePreviewLayers.some(
+        (layer) =>
+          isAgentPsdImageLayerSlot(layer) &&
+          Boolean(String(effectiveImageAssignments[layer.id] || "").trim())
+      ),
+    [effectiveImageAssignments, orderedVisiblePreviewLayers]
+  );
+  const shouldUseRenderSegmentPreviewFallback =
+    shouldShowCompositeFallback &&
+    hasVisibleAssignedPreviewImageLayer &&
+    hiddenLayerIds.length === 0 &&
+    renderPreviewSegments.length > 0;
+  const shouldShowRenderBasePreviewFallback =
+    shouldShowCompositeFallback && !shouldUseRenderSegmentPreviewFallback;
+  const getRenderSegmentPreviewZIndex = (
+    segment: NonNullable<AgentPsdTemplate["renderSegments"]>[number]
+  ) => {
+    const beforeLayerId = String(segment.beforeLayerId || "").trim();
+    if (beforeLayerId) {
+      return Math.max(
+        1,
+        (layerStackZIndexById.get(beforeLayerId) || PSD_LAYER_Z_INDEX_STEP) - 1
+      );
+    }
+
+    return (orderedPreviewLayers.length + 1) * PSD_LAYER_Z_INDEX_STEP;
+  };
   const pendingAssignedPreviewLayerIds = useMemo(
     () =>
       orderedVisiblePreviewLayers
@@ -4379,7 +4415,7 @@ export function AgentPsdTemplateEditorDialog({
                           transformOrigin: "top left",
                         }}
                       >
-                        {shouldShowCompositeFallback &&
+                        {shouldShowRenderBasePreviewFallback &&
                         orderedVisiblePreviewLayers.length > 0 ? (
                           <TemplatePreviewImage
                             alt={`${selectedTemplate.name} 编辑底图`}
@@ -4393,6 +4429,27 @@ export function AgentPsdTemplateEditorDialog({
                             width={960}
                           />
                         ) : null}
+                        {shouldUseRenderSegmentPreviewFallback
+                          ? renderPreviewSegments.map((segment) => (
+                              <img
+                                alt={`${selectedTemplate.name} 分层底图`}
+                                className="pointer-events-none absolute inset-0 h-full w-full object-cover"
+                                decoding="async"
+                                key={`render-segment-preview-${segment.id}`}
+                                loading="eager"
+                                src={buildTemplatePreviewThumbUrl(
+                                  segment.url,
+                                  {
+                                    width: 960,
+                                    quality: 74,
+                                  }
+                                )}
+                                style={{
+                                  zIndex: getRenderSegmentPreviewZIndex(segment),
+                                }}
+                              />
+                            ))
+                          : null}
 
                         <div className="pointer-events-none absolute inset-0">
                           {orderedVisiblePreviewLayers.map((layer) => {
@@ -4410,6 +4467,13 @@ export function AgentPsdTemplateEditorDialog({
                               height: layer.height,
                             } satisfies CSSProperties;
 
+                            if (
+                              shouldUseRenderSegmentPreviewFallback &&
+                              !layer.isEditable
+                            ) {
+                              return null;
+                            }
+
                             if (isAgentPsdImageLayerSlot(layer)) {
                               const assignedUrl =
                                 effectiveImageAssignments[layer.id];

lib/agents/psd-template-parser.ts

@@ -845,6 +845,18 @@ export async function preparePsdTemplateRenderAssets(params: {
       .filter(isAgentPsdTemplateLayerUserEditable)
       .map((layer) => layer.layerId)
   );
+  const clipMaskBoundaryByTemplateLayerId = new Map<string, string>();
+  for (const layer of params.layers) {
+    if (
+      isAgentPsdImageLayerSlot(layer) &&
+      isAgentPsdTemplateLayerUserEditable(layer) &&
+      layer.forceClipMask &&
+      layer.clipMaskLayerId &&
+      layer.clipMaskLayerId !== layer.id
+    ) {
+      clipMaskBoundaryByTemplateLayerId.set(layer.clipMaskLayerId, layer.id);
+    }
+  }
 
   const nextLayers = [...params.layers];
 
@@ -1041,15 +1053,21 @@ export async function preparePsdTemplateRenderAssets(params: {
     assetConcurrency,
     async (entry, index) => {
       const layerSlot = layerSlotByPsdLayerId.get(entry.layer.layerId);
+      const clipMaskBoundaryLayerId =
+        clipMaskBoundaryByTemplateLayerId.get(layerSlot?.id || "") ||
+        clipMaskBoundaryByTemplateLayerId.get(entry.layer.id);
       const isEditableBoundary = layerSlot
         ? isAgentPsdTemplateLayerUserEditable(layerSlot)
         : editableLayerIdSet.has(entry.layer.layerId);
+      const isClipMaskBoundary = Boolean(clipMaskBoundaryLayerId);
 
-      if (isEditableBoundary) {
+      if (isEditableBoundary || isClipMaskBoundary) {
         return {
           index,
           input: null,
-          beforeLayerId: layerSlot?.id || "",
+          beforeLayerId: isClipMaskBoundary
+            ? clipMaskBoundaryLayerId || ""
+            : layerSlot?.id || "",
           editableBoundary: true,
         };
       }