TEST PLUGIN - Verifying whether plugin skills can be invoked without a command file.
User-space skills (in ~/.claude/skills/) can be invoked directly from the command menu without needing a separate command file.
This test checks if the same behavior applies to plugin skills.
skills/
└── skill-ni/
└── SKILL.md
No commands/ directory.
If this works: /gsd:skill-ni should appear in command menu.
If this fails: Plugin skills require a command file (unlike user-space skills).
claude plugin marketplace add getskillsdev/skill-not-invokable-from-plugins
claude plugin install gsd@skill-not-invokable-from-plugins