Skill UI

Automates the Claude code marketplace catalog by keeping marketplace.extended.json as the source-of-truth, syncing generated marketplace.json, validating schema, and handling featured or grouped plugin additions and updates whenever marketplace-related commands are mentioned.

Automates scaffolding of new Claude Code plugins within the claude-code-plugins repo, creating directories, plugin.json, READMEs, LICENSE, commands/agents/skills/MCP assets, and marketplace entries before validating schemas and syncing the catalog.