Initialize projects and add components from local JSON files.

The shadcn CLI now supports local files. Initialize projects and add components, themes, hooks, utils and more from local JSON files.

# Initialize a project from a local file
npx shadcn init ./template.json
 
# Add a component from a local file
npx shadcn add ./block.json

This feature enables powerful new workflows:

• Zero setup - No remote registries required
• Faster development - Test registry items locally before publishing
• Enhanced workflow for agents and MCP - Generate and run registry items locally
• Private components - Keep proprietary components local and private.