Lean bullet-based body that assumes Claude's competence — it never explains what X, LinkedIn, or a newsletter is — and every section earns its place; the bilingual parentheticals are terminology labels, not concept padding.

Concrete, specific heuristics throughout ('前 3 秒必须抓住注意力', '提取 3-7 个原子创意', '每 20-30 秒刷新一次视觉效果') give actionable guidance; per the rubric notes, absence of code in an instruction-only skill is not penalized when the guidance is actionable.

The '重用流程 (Repurposing Flow)' gives a clear 5-step sequence and the '质量关卡 (Quality Gate)' provides an explicit pre-delivery checklist, matching the anchor for clear sequencing with validation checkpoints.

A self-contained, single-file skill with well-organized sections (When to Activate, First Questions, Core Rules, Platform Guidance, Repurposing Flow, Deliverables, Quality Gate) and no nested references; no bundle files exist to assess further.

Lists multiple concrete actions — creating platform-native content systems, social posts, threads, scripts, content calendars, and adapting a single source asset to multiple platforms — plus five named platforms, matching the 'lists multiple specific concrete actions' anchor.

Answers both 'what' (create platform-native content systems) and 'when' via an explicit '当用户需要…时使用' (Use when the user needs…) trigger clause, matching the anchor that requires explicit triggers.

Covers natural user phrasing — '社交帖子、推文串、脚本、内容日历' (social posts, threads, scripts, content calendars) alongside X/LinkedIn/TikTok/YouTube — giving good coverage of terms users would actually say.

The niche — cross-platform social content repurposing with platform-native adaptation — has distinct triggers and is unlikely to fire for unrelated skills.