Convert a Markdown article into a natural first-person podcast script for 1 to 4 speakers and save it as a .txt file under the current project's markdown directory. Default to Chinese output unless the user explicitly specifies another language, while preserving English terms that appear in the article. Use when the user provides an article Markdown file and a podcast speaker count, asks for a VibeVoice-style podcast script, dialogue rewrite, narrated audio script, multi-host conversation, solo podcast monologue, or personal-viewpoint audio script based on an article.