The body is lean and assumes Claude's competence: a one-line purpose, a single entry intent, and short rule lists with no padding or explanation of concepts Claude already knows, matching the level-3 'every token earns its place' anchor.

Guidance is concrete (load cs-feat by installed name, carry requested_mode: fastforward, stop if it cannot load) but the loading mechanism is unspecified and there is no executable code or command, fitting the level-2 'some concrete guidance but incomplete' anchor rather than copy-paste ready level 3.

The four-step execution sequence is clearly ordered and includes an explicit failure checkpoint ('如果当前运行时无法加载主入口协议，停止并报告'), which for a simple delegation skill satisfies the level-3 clear-sequence-with-checkpoint bar.

At roughly 20 lines with no need for its own bundle files (references/scripts/assets are absent) and two well-organized sections (执行规则, 维护规则), it meets the simple-skill note that well-organized sections alone warrant a 3.

It names a concrete action ('转交 cs-feat --mode fastforward') and a clear domain (compatibility entry), but lists only one forwarding action rather than multiple specific concrete actions, so it falls short of level 3.

It states what the skill does (forwards to cs-feat --mode fastforward) and gives a weak when ('旧 cs-feat-ff 调用用'), but lacks an explicit 'Use when...' trigger clause, which caps completeness at 2 per the guidelines.

The only keywords are technical identifiers ('cs-feat-ff', 'cs-feat --mode fastforward', 'requested_mode') that a user would not naturally say; there are no natural user-facing trigger terms, matching the level-1 jargon anchor.

It targets a specific legacy call name, but as a thin pass-through to cs-feat it could overlap with the main cs-feat skill, so it is only somewhat distinct rather than a clear standalone niche.