chore(go): audit providers kirocli kiroide opencode

Move Kiro IDE onto managed_runtime.go and shell_command.go, share
cloneJSONObject across providers, make OpenCode status verify the managed
runtime contract instead of any hook.js, propagate script removal errors,
and build the legacy runtime config through buildManagedRuntimeConfig.

Claude-Session: https://claude.ai/code/session_01Agoc9bRVE9KL7mmWtey9Vq

cmd/elydora/plugins/copilot_schema.go

@@ -274,7 +274,7 @@ func validateCopilotHooks(value any, label string) (copilotHooks, error) {
 			if err := validateCopilotHandler(handler, event, itemLabel); err != nil {
 				return nil, err
 			}
-			handlers = append(handlers, cloneCopilotObject(handler))
+			handlers = append(handlers, cloneJSONObject(handler))
 		}
 		hooks[event] = handlers
 	}