fix(canvas): 生成结果命名 - 保留复制与参数变体标识避免下载重名

web/src/pages/canvas/canvas-image-generation-executor.ts

@@ -2,6 +2,7 @@ import { nanoid } from "nanoid";
 
 import { NODE_DEFAULT_SIZE } from "@/constant/canvas";
 import { canGenerateImageInPlace, findAvailableGenerationGroupPosition, imageGenerationChildPosition, imageGenerationGroupSize } from "@/lib/canvas/canvas-generation-layout";
+import { buildImageGenerationNodeTitle } from "@/lib/canvas/canvas-generation-title";
 import { nodeSizeFromRatio } from "@/lib/canvas/canvas-node-size";
 import { canvasImageReferenceLimitError, buildImageGenerationMetadata, getGenerationCount, isGenerationCanceled, runCanvasGenerationTaskToConsumer } from "@/lib/canvas/canvas-project-generation";
 import { CONTENT_MODERATION_ERROR_CODE, generationFailureMetadata, type GenerationFailureMetadata } from "@/lib/generation-error";
@@ -80,7 +81,7 @@ export async function executeImageGeneration({
     const rootNode: CanvasNodeData = {
         id: rootId,
         type: CanvasNodeType.Image,
-        title: effectivePrompt.slice(0, 32) || "Generated Image",
+        title: buildImageGenerationNodeTitle(effectivePrompt, sourceNode),
         position: rootPosition,
         width: rootWidth,
         height: rootHeight,
@@ -104,7 +105,7 @@ export async function executeImageGeneration({
     const childNodes: CanvasNodeData[] = childIds.map((id, index) => ({
         id,
         type: CanvasNodeType.Image,
-        title: effectivePrompt.slice(0, 32) || "Generated Image",
+        title: buildImageGenerationNodeTitle(effectivePrompt, sourceNode, index, count),
         position: imageGenerationChildPosition(rootNode.position, rootNode.width, outputNodeSize, index),
         width: outputNodeSize.width,
         height: outputNodeSize.height,