ad91b4e89d
Add tree, inspect, link-child, and unlink-child subcommands to the agents resource CLI group. Extend ResourceRegistryService with link_child, unlink_child, get_children, and get_resource_tree methods. - tree: display resource hierarchy with --depth, --type, and format options - inspect: show resource details with --tree and --file options - link-child/unlink-child: manage DAG edges with cycle detection - 24 Behave scenarios, 4 Robot integration tests, ASV benchmarks - CLI reference documentation in docs/reference/resource_cli.md