feat: gate video generation on endpoint frames

web/app/page.tsx

@@ -38,6 +38,7 @@ const NODE_TYPES = {
 const KEYFRAME_PANEL_ID = "keyframe-detail-panel"
 const VIDEO_FRAME_PANEL_ID = "video-frame-panel"
 const FLOATING_PANEL_IDS = new Set([KEYFRAME_PANEL_ID, VIDEO_FRAME_PANEL_ID])
+const DIRECT_VIDEO_GENERATION_PAUSED = true
 const FRAME_TARGET_LABELS: Record<FrameExtractTarget, string> = {
   transparent_human: "透明骨架人",
   balanced: "综合关键帧",
@@ -592,6 +593,10 @@ export default function Home() {
   }, [jobs, productionJobIds, startProductionLanesForJob])
 
   const handleQuickGenerateVideo = useCallback(async (frameIdx: number, scene: StoryboardScene, model: string) => {
+    if (DIRECT_VIDEO_GENERATION_PAUSED) {
+      toast.info("视频生成调用已暂停：先生成并审核每条分镜的首帧/尾帧，再开放单条提交")
+      return
+    }
     if (!job) return
     const frame = job.frames.find((f) => f.index === frameIdx)
     if (!frame) return
@@ -728,6 +733,10 @@ export default function Home() {
   }, [ensureDefaultProductRefs, job, selectedFrames, updateJobInList])
 
   const handleGenerateProductFusionVideo = useCallback(async (frameIdx: number, shot: ProductFusionShot) => {
+    if (DIRECT_VIDEO_GENERATION_PAUSED) {
+      toast.info("视频生成调用已暂停：当前只做首尾帧和素材规划")
+      return
+    }
     if (!job) return
     const frame = job.frames.find((f) => f.index === frameIdx)
     if (!frame) return