content-production 是做什么的？
Produces the media a course or page still lacks — lesson scripts, animated explainers (Remotion), talking-head video (a camera plus Descript, or HeyGen), a TTS voice track in de/en/fr/es (edge-tts free by default) and subtitles. Use this when the user says "create my course content", "I need videos for my lessons", "can you produce the videos?", "make an explainer video", "I want a talking-head video", "give the videos a voice", "add subtitles", "my lessons have no videos yet", or when a course