[FEATURE] Skill discovery command — browse and install community skills from a registry

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Claude Code skills are powerful but hard to discover. Right now, finding useful skills requires:

1. Knowing they exist
2. Searching GitHub manually
3. Cloning repos and copying files into ~/.claude/skills/

There's no central way to browse, search, or install community-created skills. I maintain awesome-claude-skills as a curated list, but a static markdown file isn't a real discovery mechanism.

The Agent Skills spec exists, but there's no built-in way to leverage it for discovery.

Proposed Solution

Add a /skills command (or extend the existing skill system) with:

/skills search "data visualization"    # Search community skills
/skills browse                         # Browse by category
/skills install <github-url>           # Install from git URL
/skills list                           # List installed skills
/skills update                         # Update installed skills

This could pull from:

• A community registry (like npm for skills)
• GitHub topics (e.g., claude-code-skill)
• The Agent Skills spec metadata

Feature Area

Configuration and settings

Use Case Example

1. I'm starting a new data analysis project
2. I run /skills search "pandas matplotlib"
3. Claude shows me 5 matching skills with descriptions and install counts
4. I pick one: /skills install mingrath/data-viz-skill
5. It clones to ~/.claude/skills/data-viz-skill/ and is immediately available
6. Next session, I can run /skills update to get the latest version

Additional Context

The skills ecosystem is growing fast but fragmented. A discovery mechanism would:

• Lower the barrier for new users to benefit from community skills
• Incentivize skill authors to follow the Agent Skills spec
• Create a network effect that makes Claude Code more valuable

Reference: awesome-claude-skills — a curated list of 150+ skills I maintain, which shows the demand for discovery.