解决已发现问题

core/frontend/src/routes/omni-create.tsx

@@ -43,7 +43,7 @@ const VIDEO_PRESETS: PresetItem[] = [
   { name: "剧情反转带货", category: "story", mode: "video", title: "剧情反转带货", desc: "用人物冲突与意外反转建立记忆点，商品承担剧情中的关键作用。", starter: "创作一条有前后反转的剧情带货视频，让商品自然成为解决问题的关键。", cover: "/assets/video-presets/plot-twist-commerce.jpg", previewVideo: "/assets/video-presets/plot-twist-commerce.mp4" },
   { name: "达人口播种草", category: "speaker", mode: "video", title: "达人口播种草", desc: "用真实体验与生活化表达建立信任，适合电商和本地生活内容。", starter: "创作一条真实自然的达人口播种草视频，重点讲清使用场景和核心卖点。", cover: "/assets/video-presets/creator-recommendation.jpg", previewVideo: "/assets/video-presets/creator-recommendation.mp4" },
   { name: "鱼眼换装", category: "visual", mode: "video", title: "鱼眼换装", desc: "强调近距离透视与连续变装节奏，适合服饰和人物视觉内容。", starter: "创作一条鱼眼镜头风格的连续换装视频，人物和服装需要保持稳定。", cover: "/assets/video-presets/rhythm-outfit-change.jpg", previewVideo: "/assets/video-presets/rhythm-outfit-change.mp4" },
-  { name: "多色商品换款", category: "visual", mode: "video", title: "多色商品换款", desc: "统一商品比例与机位，用动作连续展示不同颜色和款式。", starter: "创作一条多色商品换款视频：统一构图展示不同颜色或款式，用明确动作触发切换，最后给出全款总览。", cover: "/assets/video-presets/multi-sku-switch.jpg", previewVideo: "/assets/video-presets/multi-sku-switch.mp4" },
+  { name: "点击换款", category: "visual", mode: "video", title: "点击换款", desc: "固定商品与机位，手指每次点击都在原位切换下一款。", starter: "创作一条点击换款视频：使用单一固定机位和同一背景，商品始终保持同一位置和比例；每次手指点击商品时，立即在原位切换到下一个颜色或款式，按确认顺序逐款展示，最后以全款式总览收束。不做口播、剧情、换场景或普通商品使用演示。", cover: "/assets/video-presets/multi-sku-switch.jpg", previewVideo: "/assets/video-presets/multi-sku-switch.mp4" },
   { name: "AI 宠物拟人", category: "story", mode: "video", title: "AI 宠物拟人", desc: "让宠物角色参与有趣小剧情，同时保留商品真实结构与用途。", starter: "创作一条 AI 宠物拟人短片：宠物有明确性格和动作，商品以真实结构和正常用法自然参与剧情。", cover: "/assets/video-presets/ai-pet-personification.jpg", previewVideo: "/assets/video-presets/ai-pet-personification.mp4" },
 ];
 
@@ -398,6 +398,7 @@ export function OmniCreatePage({
               disabled={starting || uploading}
               onClick={() => {
                 const text = prompt.trim();
+                const creationBrief = text || selectedCase?.starter || "";
                 if (!text && !selectedCase && pendingRefs.length === 0) {
                   onNotify?.("info", "请先输入你想制作的内容，或选择一个创作预设");
                   return;
@@ -407,7 +408,7 @@ export function OmniCreatePage({
                 // 会话 mode 与顶栏参数在这里定死,进对话页后不再改(契约 §0)
                 void api
                   .createCreation({
-                    title: (text || selectedCase?.title || "未命名创作").slice(0, 20),
+                    title: (creationBrief || selectedCase?.title || "未命名创作").slice(0, 20),
                     mode: outputMode,
                     preset: selectedCase?.name || "",
                     params: {
@@ -420,7 +421,7 @@ export function OmniCreatePage({
                   })
                   .then((conversation) => {
                     // 首条消息交给对话页发,避免这里再复制一份 SSE 消费逻辑
-                    navigate("omniSession", { conversationId: conversation.id, firstMessage: text, firstRefs: pendingRefs, firstUploads: sessionUploads });
+                    navigate("omniSession", { conversationId: conversation.id, firstMessage: creationBrief, firstRefs: pendingRefs, firstUploads: sessionUploads });
                   })
                   .catch((error) => {
                     const status = (error as { status?: number }).status;