* fix(skills): register cli-skill-collector in the agent-skills catalog (#6294 shipped the dir only)
* chore(skills): regenerate cli-skill-collector SKILL.md via the generator, preserving the #6294 authored workflow in the custom block
* fix(skills): derive coverage totals from the id lists + align remaining count assertions (45 catalog / 21 cli)
* fix(skills): SkillCoverage totals are number, not stale literals