fix(canvas): 局部重绘 - 同步默认显示模型与生成模型

web/src/pages/canvas/use-canvas-media-tools.ts

@@ -681,7 +681,7 @@ export function useCanvasMediaTools({
     const maskEditImageNode = useCallback(async (node: CanvasNodeData, payload: CanvasImageMaskEditPayload) => {
         if (!node.metadata?.content) return;
         const baseGenerationConfig = buildGenerationConfig(effectiveConfig, node, "image");
-        const selectedModel = payload.generationConfig?.model || payload.generationConfig?.imageModel || baseGenerationConfig.model;
+        const selectedModel = payload.generationConfig?.imageModel || payload.generationConfig?.model || baseGenerationConfig.model;
         const modelDefaults = defaultImageParamsForModel(baseGenerationConfig, selectedModel);
         const selectedImageProfile = modelCapabilityConfigFor(baseGenerationConfig, selectedModel).image;
         if (!selectedImageProfile?.references.maskSupported) {
@@ -692,7 +692,7 @@ export function useCanvasMediaTools({
             ...baseGenerationConfig,
             ...payload.generationConfig,
             model: selectedModel,
-            imageModel: payload.generationConfig?.imageModel || payload.generationConfig?.model || effectiveConfig.imageModel,
+            imageModel: selectedModel,
             quality: normalizeMaskEditQuality(payload.generationConfig?.quality || node.metadata?.quality || baseGenerationConfig.quality || modelDefaults.quality, payload.generationConfig?.size || node.metadata?.size || baseGenerationConfig.size || modelDefaults.size),
             count: String(payload.generationConfig?.count || 1),
             // 原图像素尺寸不是模型的输出尺寸合同；非高级设置时使用模型默认尺寸，避免把节点尺寸误发给上游。