Hide Hooks installation from CLI until implementation is ready

- Commented out HooksComponent import and export in __init__.py
- Removed hooks from --components all installation list
- Set enabled=false in features.json configuration
- Updated descriptions to indicate "NOT YET IMPLEMENTED"
- Code remains intact for future re-enablement

The Hooks system is not yet fully implemented, so hiding it from
users prevents confusion while preserving the framework for future use.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

setup/operations/install.py

@@ -138,7 +138,7 @@ def get_components_to_install(args: argparse.Namespace, registry: ComponentRegis
     # Explicit components specified
     if args.components:
         if 'all' in args.components:
-            return ["core", "commands", "hooks", "mcp"]
+            return ["core", "commands", "mcp"]  # hooks removed - not yet implemented
         return args.components
     
     # Profile-based selection