Use this when the user wants a script for a short vertical video, such as "write a 25-second TikTok and Reels script about our new app". Pass the topic, with the facts to use, and 1 to 4 platforms from tiktok, youtube_shorts, instagram_reels, x_video; say in the topic if an AI-generated presenter or voice will be used. Returns a script on a fixed clock (hook 0 to 3 seconds, body 4 to 20 seconds, call to action by about 25 seconds) with voiceover, on-screen text and visuals, a timing check, a caption for each platform checked against its rules, each platform's official video length limit with its source, and an ai_disclosure block naming the AI label that applies when the script declares an AI-generated person or voice. Uses only the facts given. It does not publish, make the video, clone voices or write for fake-identity accounts.