fix: harden psd template dialog against malformed payload

components/agents/AgentPsdTemplateEditorDialog.tsx

@@ -42,6 +42,7 @@ import {
 import {
   isAgentPsdImageLayerSlot,
   isAgentPsdTextLayerSlot,
+  parseAgentPsdTemplates,
   type AgentPsdTemplate,
   type AgentPsdTemplateImageLayerSlot,
   type AgentPsdTemplateLayerSlot,
@@ -51,7 +52,33 @@ import {
 } from "@/lib/agents/psd-template-config";
 import { resolveTextLayout } from "@/lib/agents/psd-text-layout";
 
-const fetcher = (url: string) => fetch(url, { cache: "no-store" }).then((res) => res.json());
+const fetcher = async (url: string): Promise<AgentPsdTemplateListResponse> => {
+  try {
+    const response = await fetch(url, { cache: "no-store" });
+    const payload = (await response.json().catch(() => null)) as
+      | Partial<AgentPsdTemplateListResponse>
+      | null;
+
+    if (!response.ok || !payload || payload.success !== true || !Array.isArray(payload.templates)) {
+      return {
+        success: false,
+        templates: [],
+        error: typeof payload?.error === "string" ? payload.error : "PSD 模板加载失败",
+      };
+    }
+
+    return {
+      success: true,
+      templates: parseAgentPsdTemplates(payload.templates),
+    };
+  } catch {
+    return {
+      success: false,
+      templates: [],
+      error: "PSD 模板加载失败",
+    };
+  }
+};
 const PREVIEW_VIEWPORT_PADDING = 56;
 const PREVIEW_STAGE_MAX_SCALE = 0.82;
 const PREVIEW_STAGE_TARGET_WIDTH = 760;
@@ -302,30 +329,36 @@ export function AgentPsdTemplateEditorDialog({
     () => templates.find((template) => template.id === selectedTemplateId) || null,
     [selectedTemplateId, templates]
   );
+  const selectedTemplateLayers = useMemo(() => {
+    if (!selectedTemplate || !Array.isArray(selectedTemplate.layers)) {
+      return [] as AgentPsdTemplateLayerSlot[];
+    }
+    return selectedTemplate.layers;
+  }, [selectedTemplate]);
 
   const editableImageLayers = useMemo(
     () =>
-      (selectedTemplate?.layers || []).filter(
+      selectedTemplateLayers.filter(
         (layer): layer is AgentPsdTemplateImageLayerSlot =>
           layer.isEditable && isAgentPsdImageLayerSlot(layer)
       ),
-    [selectedTemplate]
+    [selectedTemplateLayers]
   );
   const editableTextLayers = useMemo(
     () =>
-      (selectedTemplate?.layers || []).filter(
+      selectedTemplateLayers.filter(
         (layer): layer is AgentPsdTemplateTextLayerSlot =>
           layer.isEditable && isAgentPsdTextLayerSlot(layer)
       ),
-    [selectedTemplate]
+    [selectedTemplateLayers]
   );
   const fixedLayerCount = useMemo(() => {
     if (!selectedTemplate) return 0;
-    return selectedTemplate.layers.filter((layer) => !layer.isEditable).length;
-  }, [selectedTemplate]);
+    return selectedTemplateLayers.filter((layer) => !layer.isEditable).length;
+  }, [selectedTemplate, selectedTemplateLayers]);
   const orderedPreviewLayers = useMemo(
-    () => (selectedTemplate ? [...selectedTemplate.layers].reverse() : []),
-    [selectedTemplate]
+    () => [...selectedTemplateLayers].reverse(),
+    [selectedTemplateLayers]
   );
   const orderedEditableLayers = useMemo(
     () => orderedPreviewLayers.filter((layer) => layer.isEditable),
@@ -403,8 +436,8 @@ export function AgentPsdTemplateEditorDialog({
   }, [editableImageLayers, effectiveImageAssignments, imagePlacements, selectedTemplate]);
 
   const selectedLayer = useMemo(
-    () => selectedTemplate?.layers.find((layer) => layer.id === selectedLayerId) || null,
-    [selectedLayerId, selectedTemplate]
+    () => selectedTemplateLayers.find((layer) => layer.id === selectedLayerId) || null,
+    [selectedLayerId, selectedTemplateLayers]
   );
   const selectedImageLayer = selectedLayer && isAgentPsdImageLayerSlot(selectedLayer) ? selectedLayer : null;
   const selectedTextLayer = selectedLayer && isAgentPsdTextLayerSlot(selectedLayer) ? selectedLayer : null;
@@ -562,7 +595,11 @@ export function AgentPsdTemplateEditorDialog({
     const focusTextarea = () => {
       textarea.focus();
       const valueLength = textarea.value.length;
-      textarea.setSelectionRange(valueLength, valueLength);
+      try {
+        textarea.setSelectionRange(valueLength, valueLength);
+      } catch (error) {
+        console.warn("[AgentPsdTemplateEditorDialog] setSelectionRange failed:", error);
+      }
     };
 
     if (typeof window !== "undefined" && typeof window.requestAnimationFrame === "function") {
@@ -664,7 +701,11 @@ export function AgentPsdTemplateEditorDialog({
     };
 
     const nextTarget = event.currentTarget;
-    nextTarget.setPointerCapture?.(event.pointerId);
+    try {
+      nextTarget.setPointerCapture?.(event.pointerId);
+    } catch (error) {
+      console.warn("[AgentPsdTemplateEditorDialog] setPointerCapture failed:", error);
+    }
 
     const handlePointerMove = (moveEvent: PointerEvent) => {
       const dragState = imageDragStateRef.current;