feat: Enhance tool management and documentation in Castle

- Introduced category tools support in the `castle create` command.
- Added detailed guides for creating components in CLAUDE.md.
- Implemented new API endpoints for listing and retrieving tool details.
- Updated component and tool models to include additional metadata.
- Improved error handling and response structures in service actions.
- Enhanced documentation for component registry and web APIs.

cli/src/castle_cli/main.py

@@ -46,6 +46,10 @@ def build_parser() -> argparse.ArgumentParser:
     create_parser.add_argument(
         "--port", type=int, help="Port number (services only)"
     )
+    create_parser.add_argument(
+        "--category", default=None,
+        help="Tool category (e.g. document, search, system)",
+    )
 
     # castle info
     info_parser = subparsers.add_parser("info", help="Show component details")