Generate social media content pack from PRD — LinkedIn post, Reddit answer draft, and Twitter/X thread. Use when user says "create content", "write LinkedIn post", "social media pack", "marketing copy", or "promotion content". Do NOT use for community thread responses (use /community-outreach) or video scripts (use /video-promo).

根据产品需求文档生成社交媒体内容包，包括 LinkedIn 帖子、Reddit 回答草稿和 Twitter/X 线程。当用户输入“创建内容”“撰写 LinkedIn 帖子”“社交媒体内容包”“营销文案”或“推广内容”时使用。不用于社区帖子回复（请使用 /community-outreach）或视频脚本（请使用 /video-promo）。