Agent Skills: appmgr-api-generator

Generate complete API implementation chain from AppMgrClient to AppMgrServiceInner. Use when adding new interfaces to the app_manager service that require: (1) Client implementation, (2) IPC proxy/stub code, (3) AppMgrService service implementation, (4) AppMgrServiceInner business logic implementation, (5) Complete call chain: client.cpp → proxy.cpp → stub.cpp → service.cpp → service_inner.cpp