fix(canvas): 图片生成 - 按模型能力限制画布参考图数量

Co-authored-by: dyhhhhhqwer <1613203335@qq.com>
Original-PR: https://github.com/ddcat-ai/open-ai-canvas/pull/203

web/src/lib/canvas/canvas-project-generation.ts

@@ -42,12 +42,13 @@ export async function runBackendCanvasGenerationTask({
     metadata?: Record<string, unknown>;
     onTaskCreated?: (task: GenerationTask) => void;
 }) {
+    const normalizedReferenceImages = mode === "image" ? limitCanvasImageReferences(config, referenceImages) : referenceImages;
     return runBackendGenerationTask({
         projectId,
         mode,
         prompt,
         config,
-        referenceImages,
+        referenceImages: normalizedReferenceImages,
         referenceVideos,
         referenceAudios,
         mask,
@@ -57,6 +58,14 @@ export async function runBackendCanvasGenerationTask({
     });
 }
 
+// Canvas references can include a scene frame plus multiple character turnarounds. Keep
+// the earliest connected scene image when a provider accepts fewer images than the graph.
+export function limitCanvasImageReferences(config: AiConfig, referenceImages: ReferenceImage[]) {
+    const maxImages = modelCapabilityConfigFor(config, config.model).image?.references.maxImages;
+    if (maxImages === undefined || maxImages < 1 || referenceImages.length <= maxImages) return referenceImages;
+    return referenceImages.slice(0, maxImages);
+}
+
 export { backendProviderConfig };
 
 export function generationTaskMetadata(task: GenerationTask): CanvasNodeMetadata {