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.

docs/web-apis.md

@@ -422,3 +422,6 @@ uv run ruff format .        # Format
 ```bash
 castle create my-service --type service --description "Does something useful"
 ```
+
+See @docs/component-registry.md for manifest fields, role derivation, and
+the full service lifecycle (enable, logs, gateway reload).