`/powerup` only shows ~10 lessons — allow viewing the full catalog

Summary

The /powerup command currently displays a small fixed set (~10) of interactive lessons. There's no visible way to page through more, search, or see the full catalog of available power-ups.

Motivation

/powerup is a great discovery surface for Claude Code features, but capping it at ~10 items limits its usefulness once you've seen those. Users who want to keep learning have no way to access additional lessons.

Proposal

One or more of:

• Paginate the list so users can scroll through all available power-ups
• Add a /powerup list (or similar) subcommand to show the full catalog
• Expose a setting to control how many are shown
• Add search/filter by topic (hooks, MCP, slash commands, etc.)

Environment

• Claude Code version: 2.1.153
• OS: macOS (Darwin 24.6.0)